User's
Manual
Model ZR202G
Integrated type Zirconia High
Temperature Humidity Analyzer
IM 11M12A01-05E
IM 11M12A01-05E
6th Edition
Introduction
The EXAxt ZR series of Integrated-type Zirconia High-temperature Humidity Analyzers
was developed for humidity control in various industrial processes. There are versions
for virtually every application.
Optional accessories are also available to improve measurements and automate calibration. An optimal control system can be realized by adding appropriate options.
This instruction manual describes installation, operator, inspection and maintenance for
almost all of the equipment related to the EXAxt ZR. You may skip any section(s) on
the equipment which is/are not included in your system.
Regarding the HART communication Protocol, refer to IM 11M12A01-51E.
IM11M12A01-51E is titled ''Model EXAxt ZR series HART protocol''.
The separate version (sensor and converter separated) is described in IM 11M12A0103E.
<Before using the equipment, please read any related descriptions in this manual for the
equipment and the system you have, on appropriate use and operation of the EXAxt
ZR.>
Models and descriptions in this manual are listed below.
Product Name
Integrated type Oxygen Analyzer
ZO21R-L
ZA8F
ZR20H
Probe protector
Flow setting unit (for manual calibration use)
Automatic Calibration unit
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Calibration gas unit case (Part No. E7044KF)
Check valve (Part No. K9292DN, K9292DS)
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ZO21S
Dust filter for the detector (Part No. K9471UA)
Standard gas unit
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CMPL: Customer Maintenance Parts List
IM 11M12A01-05E
6th Edition: Sep. 2006 (YK)
All Rights Reserved, Copyright © 2000, Yokogawa Electric Corporation
IM 1M12A01-05E
Specification
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Description in this manual
Installation Operation Maintenance CMPL
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Model
ZR202G
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T.Int.1E
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This manual consists of twelve chapters. Please refer to the reference chapters for
installation, operation and maintenance.
Chapter
Outline
1. Overview
Equipment models and system configuration examples
2. Specifications
Standard specification, model code (or part number),
dimension drawing for each equipment
Installation method for each equipment
3. Installation
4. Piping
5. Wiring
Examples of piping in three standard system
configurations
Wiring procedures such as Power supply wiring , output
signal wiring or others
6. Components
7. Startup
These are described in this manual
Basic procedure to start operation of EXAxt ZR. Chapter 7
enables you to operate the equipment immediately.
8. Detailed Data Setting
9. Calibration
10. Other Functions
11. Inspection and
Maintenance
12. Troubleshooting
CMPL (parts list)
References
Operation Maintenance
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Details of key operations and displays
Describes the calibration procedure required in the course
of operation.
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Other functions described
How to conduct maintenance of EXAxt ZR and procedures
for replacement of deteriorated parts
This chapter describes measures to be taken when an
abnormal condition occurs.
User replaceable parts list
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s : Read and completely understand before operating the equipment.
s : Read before operating the equipment, and refer to whenever necessary.
n : Recommended to read at least once.
ii
Installation
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T.Int.2E
IM 1M12A01-05E
r For the safe use of this equipment
CAUTION
The cell (sensor) at the tip of the probe is made of ceramic (zirconia element). Do not
drop the equipment or subject it to pressure stress.
• Do NOT allow the sensor (probe tip) to make contact with anything when installing
the analyzer.
• Avoid any water dropping directly on the probe (sensor) of the analyzer when installing it.
• Check the calibration gas piping before introducing the calibration gas to ensure that
there is no leakage of the gas. If there is any leakage of the gas, the moisture drawn
from the measuring gas can condense in the calibration gas pipe and damage the
sensor.
• The probe (especially the tip) becomes very hot. Be sure to handle it with gloves.
EXAxt ZR is very heavy. Be sure not to accidentally drop it. Handle safely to avoid
injury.
DANGER
Connect the power supply cord only after confirming that the supply voltage matches
the rating of this equipment. In addition, confirm that the power is switched off when
connecting power supply.
Some process gas is dangerous to people. When removing this equipment from the
process line for maintenance or other reasons, protect yourself from potential poisoning
by using a protective mask or ventilating the area well.
IM 1M12A01-05E
iii
(1) About This Manual
j This manual should be passed on to the end user.
j The contents of this manual are subject to change without prior notice.
j The contents of this manual shall not be reproduced or copied, in part or in whole,
without permission.
j This manual explains the functions contained in this product, but does not warrant
that those will suit the particular purpose of the user.
j Every effort has been made to ensure accuracy in the preparation of this manual.
However, should any errors or omissions come to the attention of the user, please
contact the nearest Yokogawa Electric representative or sales office.
j This manual does not cover the special specifications. This manual may not be
changed on any change of specification, construction and parts when the change does
not affect the functions or performance of the product.
j If the product is used in a manner not specified in this manual, safety of this product
may be affected.
(2) Safety and Modification Precautions
j Follow the safety precautions in this manual when using the product to ensure
protection and safety of personnel, product and system containing the product.
iv
IM 1M12A01-05E
(3) The following safety symbols are used in this manual.
DANGER
This symbol indicates that the operator must follow the instructions laid out in this
manual in order to avoid the risk of personnel injury, electric shock or fatalities . The
manual describes what special care the operator must exercise to avoid such risks.
WARNING
This symbol indicates that the operator must refer to the instructions in this manual in
order to prevent the instrument (hardware) or software from being damaged, or a system
failure from occurring.
CAUTION
This symbol draws attention to information essential for understanding the operation and
functions.
Tip
This symbol gives information that complements the present topic.
SEE ALSO
This symbol identifies a source to which to refer.
Protective Ground Terminal
Function Ground Terminal (Do not use this terminal as the protective ground
terminal.)
Alternating current
IM 1M12A01-05E
v
j Special descriptions in this manual
This manual indicates operation keys, displays and drawings on the product as follows:
• Operation keys, displays on the panel
Enclosed in [ ].
(Ex. "MODE" key)
(Ex. message display
(Ex. data display
"BASE-L")
"102" lit, "102" flashing)
• Drawing representing flashing
Indicated by gray characters. (Flashing)
(lit)
• Displays on the LCD display panel
Alphabetic
code
LCD display
Alphabetic
code
LCD display
Numeric
code
LCD display
LCD display.EPS
vi
IM 1M12A01-05E
r NOTICE
• Specification check
When the instrument arrives, unpack the package with care and check that the
instrument has not been damaged during transportation. In addition, please check that
the specification matches the order, and required accessories are not missing. Specifications can be checked by the model codes on the nameplate. Refer to Chapter 2
specifications for the list of model codes.
• Details on operation parameters
When the EXAxt ZR Integrated-type High-temperature Humidity Analyzer arrives at
the user site, it will operate based on the operation parameters (initial data) set before
shipping from the factory.
Ensure that the initial data is suitable for the operating conditions before starting
analysis.
Where necessary, set the instrument parameters appropriately. For details on setting
data, refer to Chapters 7 to 10.
When the user changes the operation parameters, it is recommended that original and
new setting data be noted down.
r After-Sales Warranty
d Do not modify the product.
d During the warranty period, for repair under warranty carry or send the product to the
local sales representative or service office. Yokogawa will replace or repair any
damaged parts and return the product to you.
d Before returning a product for repair under warranty, provide us with the model
name and serial number and a description of the problem. Any diagrams or data
explaining the problem would also be appreciated.
d If we replace the product with a new one, we won’t provide you with a repair report.
d Yokogawa warrants the product for the period stated in the pre-purchase quotation.
Yokogawa shall conduct defined warranty service based on its standard. When the
customer site is located outside of the service area, a fee for dispatching the maintenance engineer will be charged to the customer.
d In the following cases, customer will be charged repair fee regardless of warranty
period.
• Failure of components which are out of scope of warranty stated in instruction
manual.
• Failure caused by usage of software, hardware or auxiliary equipment, which
Yokogawa Electric did not supply.
• Failure due to improper or insufficient maintenance by user.
• Failure due to modification, misuse or outside-of-specifications operation which
Yokogawa does not authorize.
• Failure due to power supply (voltage, frequency) being outside specifications or
abnormal.
• Failure caused by any usage out of scope of recommended usage.
• Any damage from fire, earthquake, storms and floods, lightning, disturbances, riots,
warfare, radiation and other natural changes.
IM 1M12A01-05E
vii
d Yokogawa does not warrant conformance with the specific application at the user
site. Yokogawa will not bear direct/indirect responsibility for damage due to a specific
application.
d Yokogawa Electric will not bear responsibility when the user configures the product
into systems or resells the product.
d Maintenance service and supplying repair parts will be covered for five years after
the production ends. For repair for this product, please contact the nearest sales office
described in this instruction manual.
viii
IM 1M12A01-05E
Contents
Introduction ........................................................................................................................... i
r For the safe use of this equipment ............................................................................... iii
r NOTICE ......................................................................................................................... vii
r After-Sales Warranty .................................................................................................. vii
1. Overview ..................................................................................................................... 1-1
1.1
< EXAxt ZR > System Configuration ............................................................
1.1.1 System 1 ..................................................................................................
1.1.2 System 2 ..................................................................................................
1.1.3 System 3 ..................................................................................................
1.2 < EXAxtZR > System Components ...............................................................
1.2.1 System Components ................................................................................
1.2.2 High-temperature Humidity Analyzer and Accessories .........................
1-2
1-2
1-2
1-3
1-4
1-4
1-4
2. Specifications .............................................................................................................. 2-1
2.1
General Specifications .................................................................................... 2-1
2.1.1 Standard Specifications ........................................................................... 2-1
2.1.2 ZR202G Integrated-type Zirconia High-temperature
Humidity Analyzer .................................................................................. 2-2
2.1.3 ZH21B Dust Protector .......................................................................... 2-10
2.2 ZA8F Flow Setting Unit and ZR20H Automatic Calibration Unit ............. 2-11
2.2.1 ZA8F Flow Setting Unit ....................................................................... 2-11
2.2.2 ZR20H Automatic Calibration Unit ..................................................... 2-13
2.3 ZO21S Standard Gas Unit ............................................................................ 2-15
2.4 Other Equipment ........................................................................................... 2-16
2.4.1 Stop Valve (part number: L9852CB or G7016XH) ............................. 2-16
2.4.2 Check Valve (part number: K9292DN or K9292DS) .......................... 2-16
2.4.3 Air Set ................................................................................................... 2-17
2.4.4 Zero-gas Cylinder (part number: G7001ZC) ........................................ 2-19
2.4.5 Pressure Regulator for Gas Cylinder
(part number: G7013XF or G7014XF) ................................................ 2-19
2.4.6 Case Assembly for Calibration-gas Cylinder
(part number: E7044KF) ...................................................................... 2-20
2.4.7 Model ZR202A Heater Assembly ........................................................ 2-21
3. Installation .................................................................................................................. 3-1
3.1
Installation of High-temperature Humidity Analyzer .................................... 3-1
3.1.1 Location ................................................................................................... 3-1
3.1.2 Probe Insertion ........................................................................................ 3-2
3.1.3 Installation of the Detector ..................................................................... 3-3
3.1.4 Installation of ZH21B Dust Protector .................................................... 3-3
3.2 Installation of ZA8F Flow Setting Unit ......................................................... 3-4
3.2.1 Location ................................................................................................... 3-4
IM 11M12A01-05E
ix
3.2.2 Mounting of ZA8F Flow Setting Unit ................................................... 3-4
3.3
Installation of ZR20H Automatic Calibration Unit ........................................ 3-6
3.3.1 Location ................................................................................................... 3-6
3.3.2 Mounting of ZR20H Automatic Calibration Unit .................................. 3-6
3.4
Installation of the Calibration-gas Unit Case (E7044KF) .............................. 3-8
3.4.1 Location ................................................................................................... 3-8
3.4.2 Mounting ................................................................................................. 3-8
3.5
Insulation Resistance Test ............................................................................... 3-9
3.6
Installation of the High Temperature Humidity Analyzer (with pressure
compensation) ............................................................................................... 3-10
4. Piping ........................................................................................................................... 4-1
4.1
Piping for System Configuration 1 .................................................................
4.1.1 Piping Parts for System Configuration 1 ...............................................
4.1.2 Connection to the Calibration Gas Inlet .................................................
4.1.3 Connection to the Reference Gas Inlet ...................................................
4.2
Piping for System Configuration 2 .................................................................
4.2.1 Piping Parts for System Configuration 2 ...............................................
4.2.2 Piping for the Calibration Gas ................................................................
4.2.3 Piping for the Reference Gas ..................................................................
4.3
Piping for System Configuration 3 .................................................................
4-1
4-2
4-2
4-2
4-3
4-3
4-4
4-4
4-5
5. Wiring .......................................................................................................................... 5-1
5.1
General ............................................................................................................
5.1.1 Terminals for the External Wiring .........................................................
5.1.2 Wiring .....................................................................................................
5.1.3 Mounting of Cable Gland .......................................................................
5.2
Wiring for Analog Output ...............................................................................
5.2.1 Cable Specifications ................................................................................
5.2.2 Wiring Procedure ....................................................................................
5.3
Wiring Power and Ground Terminals ............................................................
5.3.1 Wiring for Power Line ............................................................................
5.3.2 Wiring for Ground Terminals .................................................................
5.4
Wiring for Contact Output ..............................................................................
5.4.1 Cable Specifications ................................................................................
5.4.2 Wiring Procedure ....................................................................................
5.5
Wiring for Contact Input .................................................................................
5.5.1 Cable Specifications ................................................................................
5.5.2 Wiring Procedure ....................................................................................
5-1
5-2
5-2
5-3
5-4
5-4
5-4
5-5
5-5
5-5
5-6
5-6
5-6
5-7
5-7
5-7
6. Components ................................................................................................................ 6-1
6.1
ZR202G High-temperature Humidity Analyzer ............................................. 6-1
6.1.1 Integrated-type High-temperature Humidity Analyzer .......................... 6-1
6.2
ZA8F Flow Setting Unit and ZR20H Automatic Calibration Unit ............... 6-2
7. Startup ......................................................................................................................... 7-1
7.1
7.2
7.3
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Checking Piping and Wiring Connections ..................................................... 7-2
Valve Setup ..................................................................................................... 7-2
Supplying Power to Converter ........................................................................ 7-2
IM 1M12A01-05E
7.4
Operation of Infrared Switch .......................................................................... 7-3
7.4.1 Display and Switches .............................................................................. 7-3
7.4.2 Display Configuration ............................................................................. 7-5
7.4.3 Entering Parameter Code Selection Display .......................................... 7-6
7.4.4 Selecting Parameter Codes ..................................................................... 7-7
7.4.5 Changing Set Values ............................................................................... 7-8
7.5 Confirmation of Equipment Type Setting .................................................... 7-10
7.6 Setting Display Item ..................................................................................... 7-11
7.7 Current Output Setting .................................................................................. 7-12
7.7.1 Analog Output Setting .......................................................................... 7-12
7.7.2 Output Range Setting ............................................................................ 7-13
7.7.3 Minimum Current (4 mA) and Maximum Current (20 mA) Settings . 7-14
7.8 Checking Current Loop ................................................................................. 7-15
7.9 Checking Contact I/O ................................................................................... 7-16
7.9.1 Contact Output Check ........................................................................... 7-17
7.9.2 Checking Calibration Contact Output .................................................. 7-18
7.9.3 Checking Input Contacts ....................................................................... 7-19
7.10 Calibration ..................................................................................................... 7-20
7.10.1 Calibration Setup .................................................................................. 7-20
7.10.2 Manual Calibration ............................................................................... 7-22
8. Detailed Data Setting ................................................................................................. 8-1
8.1
Current Output Setting .................................................................................... 8-1
8.1.1 Minimum and Maximum Settings Corresponding to 4 mA and 20 mA 8-2
8.1.2 Entering Output Damping Constants ...................................................... 8-5
8.1.3 Selection of Output Mode ...................................................................... 8-5
8.1.4 Default Values ........................................................................................ 8-5
8.2 Output Hold Setting ........................................................................................ 8-6
8.2.1 Definition of Equipment Status .............................................................. 8-6
8.2.2 Preference Order of Output Hold Values ............................................... 8-8
8.2.3 Output Hold Setting ................................................................................ 8-8
8.2.4 Default Values ........................................................................................ 8-8
8.3 Alarm Setting .................................................................................................. 8-9
8.3.1 Alarm Values .......................................................................................... 8-9
8.3.2 Alarm Output Actions ............................................................................. 8-9
8.3.3 Alarm Setting Procedure ....................................................................... 8-11
8.3.4 Default Values ...................................................................................... 8-12
8.4 Output Contact Setup .................................................................................... 8-13
8.4.1 Output Contact ...................................................................................... 8-13
8.4.2 Setting Output Contact ......................................................................... 8-14
8.4.3 Default Values ...................................................................................... 8-15
8.5 Input Contact Settings ................................................................................... 8-16
8.5.1 Setting Input Contact ............................................................................ 8-16
8.5.2 Default Values ...................................................................................... 8-17
8.6 Input Contact Settings ................................................................................... 8-18
8.6.1 Setting Input Contact ............................................................................ 8-18
8.6.2 Setting Periods over which Maximum and Minimum Values
Are Monitored and Average Values are Calculated. ............................ 8-19
8.6.3 Setting Measurement Gas Temperature and Pressure .......................... 8-19
8.6.4 Setting Purging ...................................................................................... 8-20
IM 11M12A01-05E
xi
9. Calibration .................................................................................................................. 9-1
9.1
Calibration Briefs ............................................................................................
9.1.1 Measurement Principle of Zirconia Humidity Analyzer ........................
9.1.2 Calibration Gas .......................................................................................
9.1.3 Compensation ..........................................................................................
9.1.4 Characteristic Data from a Sensor Measured During Calibration .........
9.2
Calibration Procedures ....................................................................................
9.2.1 Calibration Setting ..................................................................................
9.2.2 Calibration ...............................................................................................
9-1
9-1
9-3
9-4
9-5
9-6
9-6
9-9
10. Other Functions........................................................................................................ 10-1
10.1 Detailed Display ............................................................................................ 10-1
10.1.1 Oxygen Concentration .......................................................................... 10-3
10.1.2 Humidity ............................................................................................... 10-3
10.1.3 Mixing Ratio ......................................................................................... 10-3
10.1.4 Relative Humidity ................................................................................. 10-3
10.1.5 Dew Point .............................................................................................. 10-3
10.1.6 Cell Temperature .................................................................................. 10-4
10.1.7 Process Gas Temperature ..................................................................... 10-4
10.1.8 Cold Junction Temperature ................................................................... 10-4
10.1.9 Cell Voltage .......................................................................................... 10-4
10.1.10 Thermocouple Voltage .......................................................................... 10-4
10.1.11 Cold Junction Voltage .......................................................................... 10-4
10.1.12 Current Output ...................................................................................... 10-5
10.1.13 Response Time ...................................................................................... 10-5
10.1.14 Internal Resistance of Cell .................................................................... 10-5
10.1.15 Robustness of a Cell ............................................................................. 10-6
10.1.16 Heater On-Time Ratio .......................................................................... 10-6
10.1.17 Oxygen Concentration (with time constant), Humidity (with time constant),
and Mixing Ratio (with time constant) ................................................ 10-6
10.1.18 Maximum Oxygen Concentration, Humidity, and Mixing Ratio ........ 10-6
10.1.19 Minimum Oxygen Concentration, Humidity, and Mixing Ratio ......... 10-6
10.1.20 Average Oxygen Concentration, and Mixing Ratio ............................. 10-7
10.1.21 Span-gas and Zero-gas Correction Ratios ............................................ 10-7
10.1.22 History of Calibration Time ................................................................. 10-7
10.1.23 Time ...................................................................................................... 10-7
10.1.24 Software Revision ................................................................................. 10-7
10.2 Operational Data Initialization ...................................................................... 10-8
10.3 Initialization Procedure ................................................................................. 10-9
10.4 Reset ............................................................................................................ 10-10
10.5 Handling of the ZO21S Standard Gas Unit ................................................ 10-18
10.5.1 Standard Gas Unit Component Identification .................................... 10-18
10.5.2 Installing Gas Cylinders ..................................................................... 10-19
10.5.3 Calibration Gas Flow .......................................................................... 10-20
10.6 Methods of Operating Valves in the ZA8F Flow Setting Unit .................. 10-22
10.6.1 Preparation Before Calibration ........................................................... 10-23
10.6.2 Operating the Span Gas Flow Setting Valve ..................................... 10-23
10.6.3 Operating the Zero Gas Flow Setting Valve ...................................... 10-24
10.6.4 Operation After Calibration ................................................................ 10-24
xii
IM 1M12A01-05E
11. Inspection and Maintenance ................................................................................... 11-1
11.1 Inspection and Maintenance of the Detector ................................................ 11-2
11.1.1 Cleaning the Calibration Gas Tube ...................................................... 11-2
11.1.2 Replacing the Sensor Assembly ........................................................... 11-3
11.1.3 Replacement of the Heater Unit ........................................................... 11-5
11.1.4 Replacement of O-ring ......................................................................... 11-7
11.1.5 Stopping and Re-starting Operation ..................................................... 11-8
11.2 Inspection and Maintenance of the Converter .............................................. 11-9
11.2.1 Replacing Fuses .................................................................................... 11-9
11.3 Replacement of Flowmeter for ZR20H Autocalibration Unit ................... 11-11
12. Troubleshooting ........................................................................................................ 12-1
12.1 Displays and Measures to Take When Errors Occur ................................... 12-1
12.1.1 What is an Error? .................................................................................. 12-1
12.1.2 Measures to Take When an Error Occurs ............................................ 12-2
12.2 Displays and Measures to Take When Alarms are Generated ..................... 12-4
12.2.1 What is an Alarm? ................................................................................ 12-4
12.2.2 Measures Taken When Alarms Occur .................................................. 12-4
12.3 Countermeasures When the Measured Value Shows Error ......................... 12-9
12.3.1 Measured Value Higher Than True Value ........................................... 12-9
12.3.2 Measured Value Lower Than True Value .......................................... 12-10
12.3.3 Measurements Sometimes Show Abnormal Values .......................... 12-11
Customer Maintenance Parts List ................................................ CMPL 11M12A01-05E
Customer Maintenance Parts List ................................................ CMPL 11M12A01-12E
Customer Maintenance Parts List .................................................... CMPL 11M3D1-01E
Revision Record ................................................................................................................... 1
IM 11M12A01-05E
xiii
1. Overview
1.
Overview
The EXAxt ZR Integrated-type Zirconia High-temperature Humidity Analyzer integrates
the detector and the converter in one unit. This analyzer can measure humidity of hot air
continuously, so can be used to measure humidity of air in driers which are heated by
steam or electricity. It can also be used in a variety of manufacturing applications with
humidifiers, as well as with driers, for humidity measurement and control. It can help
improve productivity in these application fields.
Optional accessories are also available to improve measurement accuracy and provide
automate calibration.
The analyzer is equipped with three infrared switches, which enable the user to operate
the equipment on site without opening the cabinet.
An optimal control system can be realized by choosing the most suitable of several
equipment versions.
Some examples of typical system configurations are illustrated following pages.
IM 11M12A01-05E
1-1
1.1 < EXAxt ZR > System Configuration
The system configuration determines whether calibration is initiated automatically or
manually.
The three basic system configurations are given below:
1.1.1 System 1
This is the simplest system which consists of an integrated-type (all-in-one) detector and
analyzer. This system can be used for monitoring humidity in driers used in food
processing, or the like. No piping is required for the reference gas (air) which is fed in at
the installation site. The handheld ZO21S standard gas unit is used for calibration. Zero
and span gases from the standard gas unit are only fed to the detector through a tube
during calibration.
CAUTION
• As this system uses ambient air for the reference gas, measuring accuracy will be
affected by the installation location.
• A stop valve should be connected to the calibration gas inlet of the equipment. The
valve should be fully closed unless calibration is being performed.
Model ZR202G Integrated type Zirconia
High Temperature Humidity Analyzer
Stop valve
~
100 to 240 V AC
Contact input
Analog output, Contact output
Digital output (HART)
Model ZO21S Standard gas unit
Calibration gas
~
F1.1E.EPS
100/110/115
200/220/240 V AC
Figure 1.1
1.1.2 System 2
This system is used where the installation atmosphere is polluted by gases other than air,
or where accurate monitoring and controlling of the humidity is required. Instrument air
(clean and dry air of oxygen concentration 21%) is used as the reference gas and the
span gas for calibration. Zero calibration gas is supplied from the cylinder. The gas flow
is controlled by the ZA8F flow setting unit (for manual valve operation).
Model ZR202G Integrated type Zirconia
High Temperature Humidity Analyzer
Check valve
or
Stop valve
~ 100 to 240 V AC
Contact input
Analog output, Contact output
Digital output (HART)
Model ZA8F flow setting unit
Reference Flowmeter
gas
Needle
valve
Instrument air
Span gas (Same as Zero gas
calibration unit)
Calibration gas
F1.2E.EPS
1-2
Figure 1.2
Air Set
Calibration gas pressure
regulator
Calibration gas unit case
Zero gas
cylinder
IM 11M12A01-05E
1. Overview
1.1.3 System 3
This system is also used where accurate monitoring and controlling of the humidity is
required. Instrument air (clean and dry air of oxygen concentration 21%) is used as the
reference gas and span gas for calibration. A calibration zero gas is supplied from a
cylinder. This system uses an automatic calibration unit to control the calibration gas
flow automatically.
*2
Model ZR202G Integrated type Zirconia
High Temperature Humdity Analyzer
with auto calibration (ZR202G-hhh-h-h-A-h-h-h-h-A)
~
Auto Calibration unit
ZR20H
100 to 240 V AC
*1
Contact input
Analog output, contact output
Digital output (HART)
Air Set
Reference gas
Instrument air
Span gas
Calibration gas
unit case
Calibration gas
Calibration gas pressure regulator
*3
Zero gas cylinder
Note:
The installation temperature limits for an integrated unit range from -20 to 55 8C.
F1.3E.EPS
*1 Shield cable:
Use shielded signal cables, and connect the shields to the FG terminal of the converter.
*2 Select the desired probe from the Probe Configuration table on page 1-4.
*3 100% N2 gas cannot be used as the zero gas. Use approx. 1 vol% O2 gas (N2-based).
Figure 1.3
IM 11M12A01-05E
1-3
1.2 < EXAxtZR > System Components
1.2.1 System Components
Integrated type
System config.
Ex.1 Ex.2 Ex.3
System Components
Model ZR202G Integrated type Zirconia High Temperature Humidity Analyzers
Model ZH21B Dust Protector
Model ZO21S Standard Gas Unit
Model ZA8F Flow setting unit for manual calibration
Model ZR20H Automatic Calibration Unit for integrated type Analyzer
L9852CB, G7016XH Stop Valve for Calibration-gas line
K9292DN, K9292DS Check Valve for Calibration-gas line
(
)
(
)
K9473XH/K9473XJ, G7004XF/K9473XG Air Set
G7001ZC Zero-gas Cylinder
G7013XF, G7014XF Pressure Regulator for Gas Cylinder
E7044KF Case Assembly for Calibration-gas Cylinder
T1.1.EPS
: Items required for the above system example
: To be selected depending on each application.
(
) : Select either
1.2.2 High-temperature Humidity Analyzer and Accessories
d General-use Analyzer ( gas temperature 0 to 7008C )
Components
General-use probe
ZR202G
Installation
Horizontal to Vertical, when insertion
length is 0.4 to 2 m.
Vertical, when insertion length is 2.5
to 3 m.
Probe with Dust Protector
Components
ZR202G-040
and
ZH21B
Installation
Horizontal to Vertical, when insertion
length is 0.4 m.
F1.2.2.1.EPS
1-4
IM 11M12A01-05E
2. Specifications
2.
Specifications
This chapter focuses on the specifications for the High-temperature Humidity Analyzer
(integrated model) and associated equipment, including:
ZR202G
Integrated type Zirconia High-temperature
Humidity Analyzer
(See Section 2.1.2)
ZH21B
Dust protector
(See Section 2.1.3)
ZA8F
ZR20H
Flow setting unit
Automatic calibration unit
(See Section 2.2.1)
(See Section 2.2.2)
ZO21S
Standard gas unit
(See Section 2.3)
2.1 General Specifications
2.1.1 Standard Specifications
High-temperature Humidity Analyzer
Oxygen concentration in mixed gas which consists of water vapor and air is proportional
to the volumetric ratio of oxygen in the air, so the volumetric ratio of water vapor can
be calculated from the oxygen concentration.
Measured Objects : Water vapor (in vol%) in mixed gases (air and water vapor)
Measured System : Zirconia system
Measured Range : 0.01 to 100 vol% O2, 0 to 100 vol% H2O or 0 to 1.000 kg/kg
Output Signal : 4 to 20 mA DC (maximum load resistance 550 V)
Oxygen concentration; Any setting in the range of 0 to 5 through 0 to 100
vol% O2 (in 1 vol% O2), or partial range.
Moisture quantity; 0 to 25 through 0 to 100 vol% H2O (in 1 vol% H2O), or
partial range.
Mixture ratio 0 to 0.2 through 0 to 1.000 kg/kg (in 0.001 kg/kg), or
partial range.
Digital Communication (HART): 250 to 550 V, depending on quantity of field
devices connected to the loop (multi-drop mode).
Note: HART is a registered trademark of the HART Communication
Foundation.
Display Range: Oxygen concentration 0 to 100 vol% O2 ,
Moisture quantity 0 to 100 vol% H2O
Mixture ratio 0 to 1 kg/kg
Relative humidity 0 to 100% RH
Dew point -40 to 3708 C
Warm-up Time : Approx. 20 min.
These characteristics are calculated by oxygen concentration measured in air
which include water vapor.
(Note) Those values are calcurated by temperature and absolute pressure. Then accurate
tempera
ture and pressure value must be input to the converter.
Repeatability : (See Note 1)
61 vol% H2O (sample gas pressure 2 kPa or less)
IM 11M12A01-05E
2-1
Linearity : (Excluding standard gas tolerance) (See Note 1)
(Use oxygen of known concentration (in the measuring range) as the zero and span
calibration gas.)
62 vol% H2O; (Sample gas pressure: within 60.49 kPa)
63 vol% H2O; (Sample gas pressure: 2 kPa or less)
Drift: (Excluding the first two weeks in use) (See Note 1)
Both zero and span 63 vol% H2O/month
Response Time : Response of 90% within 5 second. (Measured after gas is introduced
from calibration-gas inlet and analog output start changing.)
(Note1) These tolerances do not apply to the pressure compensated version, or where
natural convection is used for the reference air.
2.1.2 ZR202G Integrated-type Zirconia High-temperature Humidity Analyzer
Can be operated in the field without opening the cover using optical switches.
Display : 6-digit LCD
Switch : Three optical switches
Output Signal: 4 to 20 mA DC, one point (maximum load resistance 550 V)
Digital Communication (HART) : 250 to 550 V, depending on quantity of field
devices connected to the loop (multi-drop mode).
Note : HART is a registered trademark of the HART Communication Foundation.
Contact Output Signal : Two points (one is fail-safe, normally open)
Contact Input Signal : Two points
Sample Gas Temperature : 0 to 7008 C
It is necessary to mount the cell using Inconel cell-bolts when the temperature
measures more than 6008 C or greater.
Sample Gas Pressure : -5 to +20 kPa
When the pressure in the process exceeds 3kPa, it is recommended that you
compensate the pressure. When the pressure in the process exceeds 5kPa, you must
perform pressure compensation.)
No pressure fluctuation in the process should be allowed.
Probe Length : 0.4, 0.7, 1.0, 1.5, 2.0, 2.5, 3.0m
Probe Material : SUS 316 (JIS)
Ambient Temperature : -20 to +558 C (- 5 to +708 C on the case surface)
Storage Temperature : -30 to +708 C
Humidity Ambient : 0 to 95%RH (non-condensing)
Installation Altitude : 2000 m or less
Category based on IEC 1010 : II (Note)
Pollution degree based on IEC 1010 : 2 (Note)
Note : Installation category, called over-voltage category, specifies impulse withstand voltage. Category II is for electrical equipment.
Pollution degree indicates the degree of existence of solid, liquid, gas or other
inclusions which may reduce dielectric strength. Degree 2 is the normal indoor
environment.
Power Supply Voltage : Ratings; 100 to 240 V AC Acceptable range; 85 to 264 V
AC
Power Supply Frequency : Ratings; 50/60 Hz
Acceptable range ; 45 to 66 Hz
Power Consumption : Max. 300 W, approx. 100 W for ordinary use.
Safety and EMC conforming standards
Safety : EN61010-1
CSA C22.2 No.61010-1
UL61010-1
2-2
IM 11M12A01-05E
2. Specifications
EMC : EN 61326 Class A
EN 55011 Class A Group 1
EN 61000-3-2
AS/NZS CISPR 11
Reference Air System : Natural Convection, Instrument Air
Instrument Air System (excluding Natural Convection): Pressure; 200 kPa + the
pressure inside the dryer (It is recommended to use air which is dehumidified to
dew point -208 C or less, and with dust or oil mist removed.)
Consumption; Approx. 1 Nl/min
Material in Contact with Gas : SUS 316(JIS), Zirconia, SUS 304(JIS) (flange),
Hastelloy B, (Inconel 600, 601)
Construction: Heater and thermocouple replaceable construction. Non explosion-proof
JIS C0920 / equivalent to IP44D. Equivalent to NEMA 4X / IP66 (Achieved
when the cable entry is completely sealed with a cable gland in the recirculation pressure compensated version.)
Gas Connection : Rc 1/4 or 1/4 NPT (F)
Wiring Connection : G1/2, Pg13.5, M20 by 1.5 mm, 1/2 NPT select one type (4 pieces)
Installation : Flange mounting
Probe Mounting Angle :
Horizontal to vertically downward.
When the probe insertion length is 2 m or less, installing at angles from horizontal
to vertically downward is possible.
When the probe insertion length is 2.5 m or more, mount vertically downward
(within 658 ), or both mount horizontally (within 658 ) and use a probe protector.
Case : Aluminum alloy
Paint Color: Cover; Mint green (Munsell 5.6BG3.3/2.9)
Case : Mint green (Munsell 5.6BG3.3/2.9)
Finish : Polyurethane corrosion-resistance coating
Weight:
Insertion length of 0.4 m : approx. 8 kg (JIS 5K 65) / approx. 13 kg (ANSI 150 4)
Insertion length of 1.0 m: approx. 10 kg (JIS 5K 65) / approx. 15 kg (ANSI 150 4)
Insertion length of 1.5 m: approx. 12 kg (JIS 5K 65) / approx. 17 kg (ANSI 150 4)
Insertion length of 2.0 m: approx. 14 kg (JIS 5K 65) / approx. 19 kg (ANSI 150 4)
Insertion length of 3.0 m: approx. 17 kg (JIS 5K 65) / approx. 22 kg (ANSI 150 4)
Functions
Display Function : Displays values of the measured oxygen concentration, moisture
quantity, mixture ratio etc.
Alarm, Error Display : Displays alarms such as “AL-06” or errors such as “Err-01”
when any such status occurs.
Calibration Functions:
Autocalibration ; Requires the Autocalibration Unit. It calibrates automatically at
specified intervals.
Semi-auto Calibration ; Requires the Autocalibration Unit. Input calibration started
by optical switch or contact, then it calibrates automatically afterwards.
Manual Calibration ; Calibration by interactively opening/closing the valve of
calibration gas during operation with optical switch.
Maintenance Functions :
Can set new data settings during daily operation and at inspection/maintenance
time. Display data settings, calibration data settings, test settings (current output
loop check, input/output contact check).
Setup Functions :
IM 11M12A01-05E
2-3
Initial settings should be set to match the plant conditions when installing the
converter. Current output data settings, alarm data settings, contact data settings,
other settings.
Display and setting content:
Display Related Items : Oxygen concentration (vol% O2), Moisture quantity (vol%
H2O), mixture ratio (kg/kg), relative humidity (%RH), dew point (8 C), cell temperature (8 C), thermocouple reference junction temperature (8 C), maximum/minimum/
average oxygen concentration (vol% O2), maximum/minimum/average moisture
quantity (vol% H2O), maximum/minimum/average mixture ratio (kg/kg), cell e.m.f.
(mV), output 1, 2 current (mA), cell response time (seconds), cell internal resistance
(V), cell condition (in four grades), heater on-time rate (%), calibration record (ten
times), time (year/month/day/hour/minute)
Calibration Setting Items : Span gas concentration (vol% O2), zero-gas concentration
(vol% O2), calibration mode (auto, semi-auto, manual), calibration type and method
(zero-span calibration, zero calibration only, span calibration only), stabilization
time (min.sec), calibration time (min.sec), calibration period (day/hour), starting
time (year/month/day/hour/minute)
Output Related Items : Analog output/output mode selection, output conditions when
warming-up/maintenance/calibrating/abnormal, oxygen concentration at 4mA/
20mA (vol% O2), moisture quantity at 4mA/ 20mA (vol% H2O), mixture ratio at
4mA/ 20mA (kg/kg), time constant, preset values when warming-up/maintenance/
calibrating/abnormal, output preset values on abnormal
Alarm Related Items : Oxygen concentration high-alarm/high-high alarm limit values
(vol% O2), Oxygen concentration low-alarm/low-low alarm limit values (vol% O2),
Moisture quantity high-alarm/high-high alarm limit values (vol% H2O), moisture
quantity low-alarm/low-low alarm limit values (vol% H2O), mixture ratio highalarm/high-high alarm limit values (kg/kg), mixture ratio low-alarm/low-low alarm
limit values (kg/kg), oxygen concentration alarm hysteresis (vol% O2), moisture
quantity alarm hysteresis (vol% H2O), mixture ratio alarm hysteresis (kg/kg),
oxygen concentration/moisture quantity/ mixture ratio detection, alarm delay
(seconds)
Contact Related Items : Selection of contact input 1 and 2, selection of contact output
1 and 2 (abnormal, high-high alarm, high-alarm, low-alarm, low-low alarm,
maintenance, calibrating, range switching, warming-up, calibration-gas pressure
decrease, flameout gas detection
Converter Output : One mA analog output point (4 to 20 mA DC (maximum load
resistance of 550 V)) with mA digital output point (HART) (minimum load
resistance of 250 V).
Range: any setting between 0 to 25 through 0 to 100 vol% H2O, and partial range is
available (Maximum range value/minimum range value 1.3 or more)
For the log output, the minimum range values are fixed to 0.1 vol% O2 for the
oxygen concentration, 0.1 vol%H2O for the moisture quantity, and 0.01 kg/kg for
the mixture ratio.
4 to 20 mA DC linear or log can be selected.
Input/output isolation
Output damping : 0 to 255 seconds.
Hold/non-hold selection, preset value setting possible with hold.
Contact Output : Two points, contact capacity 30V DC 3A, 250V AC 3A (resistive
load)
Normally energized or normally de-energized can be selected.
Delayed functions (0 to 255 seconds) and hysteresis function (0 to 9.9 vol% O2) can
be added to high/low-alarms.
The following functions are programmable for contact outputs.
2-4
IM 11M12A01-05E
2. Specifications
(1) Abnormal, (2) High-high alarm, (3) High-alarm, (4) Low-low alarm, (5) Lowalarm, (6) Maintenance, (7) Calibration, (8) Range switching answer-back, (9)
Warm-up, (10) Calibration-gas pressure decrease (answerback of contact input),
(11) Flameout gas detection (answerback of contact input).
Contact Input : Two points, voltage-free contacts
The following functions are programmable for contact inputs:
(1) Calibration-gas pressure decrease alarm, (2) Range switching (switched range is
fixed), (3) External calibration start, (4) Process alarm (if this signal is received, the
heater power turns off)
Contact capacity : Off-leakage current; 3 mA or less.
Self-diagnosis : Abnormal cell, abnormal cell temperature (low/high), abnormal
calibration, A/D converter abnormal, digital circuit abnormal
Calibration : Method; zero/span calibration
Calibration mode ; automatic, semi-automatic and manual (All are operated using
optical switches). Either zero or span can be skipped.
Zero calibration-gas concentration setting range : 0.3 to 100 vol% O2 (0.01 vol% in
smallest units).
Span calibration-gas concentration setting range : 4.5 to 100 vol% O2 (0.01 vol% in
smallest units).
Use nitrogen-balanced mixed gas containing 10% scale of oxygen for standard zerogas, and 80 to 100% scale of oxygen for standard span-gas.
Calibration period ; date/time setting: maximum 255 days
IM 11M12A01-05E
2-5
• Model and Codes
Option
code
Suffix code
Model
Integrated type Zirconia High Temperature Homidity Analyzer
ZR202G
Length
-040
-070
-100
-150
-200
-250
-300
Wetted material
0.4 m
0.7 m
1.0 m
1.5 m
2.0 m
2.5 m
3.0 m
-S
-C
Flange
(*2)
-A
-B
-C
-E
-F
-G
-K
-L
-M
-P
-R
-S
-W
Reference air
Gas Thread
Connection box thread
Instruction manual
(*1)
(*1)
SUS316
Stainless steel with Inconel calibration gas tube
Auto Calibration
ANSI Class150 2 RF SUS304
ANSI Class150 3 RF SUS304
ANSI Class150 4 RF SUS304
DIN PN10-DN50 SUS304
DIN PN10-DN80 SUS304
DIN PN10-DN100 SUS304
JIS 5K 65 FF SUS304
JIS 10K 65 FF SUS304
JIS 10K 80 FF SUS304
JIS 10K 100FF SUS304
JPI Class150 4 RF SUS304
JPI Class150 3 RF SUS304
Westinghouse
No auto calibration unit mounted
Horizontal mounting (*7)
Vertical mounting (*7)
Natural convection
External connection (Instrument air) (*10)
Pressure compensation (*10)
Rc 1/4
1/4 FNPT
-N
-A
-B
-C
-E
-P
-R
-T
-P
-G
-M
-T
G1/2
Pg13.5
M20x1.5 mm
1/2NPT
Japanese
English
-J
-E
Always -A
-A
Options
Description
/D
DERAKANE coating (*9)
/C
Inconel bolt
/HS
Set for Humidity Analyzer
(*3)
/CV
/SV
/H
Check valve
Stop valve
Hood
(*8)
/SCT
Stainless steel tag plate (*6)
/PT
Printed tag
(*4)
(*5)
(*5)
(*6)
*1 For the horizontal installed probe whose insertion length is 2.5 meters or more, use the Probe Protector. Be sure to specify
ZO21R-L-hhh-h. Specify the flange suffix code either -C or -K.
*2 The thickness of the flange depends on its dimensions.
*3 Inconel probe bolts and U shape pipe are used. Use this option for high temperature use (ranging from 600 to 7008C).
*4 For humidity measurements, be sure to specify /HS options.
*5 Specify either /CV or /SV option code.
*6 Specify either /SCT or /PT option code.
*7 No need to specify the option codes, /CV and /SV, since the check valves are provided with the auto-calibration unit.
Auto calibration cannot be used when natural convection is selected as reference air.
*8 Sun shield hood is still effective even if scratched. Hood is necessary for outdoor installation out of sun shield roof.
Piping for reference air must be installed to supply reference air constantly at a specified flow rate.
*9 Available only in the U.S. DERAKANE is a registered trademark of the Dow Chemical Company.
*10 Piping for reference air must be installed to supply reference air constantly at a specified flow rate.
2-6
T12.EPS
IM 11M12A01-05E
2. Specifications
• External Dimensions
Model ZR202G Integrated type Zirconia High Temperature Humidity Analyzers
Unit: mm
338 to 351
L
[123
Display side
t
L= 0.4, 0.7,
1.0, 1.5, 2.0,
2.5, 3.0 (m)
125
48.5
25
[ 50.8
122
Rc1/4 or 1/4NPT
Reference air inlet
Rc1/4 or 1/4NPT
Calibration gas inlet
153 to 164
4-G1/2,2-1/2NPT etc.
Cable connection port
49
252 to 265
Terminal side
170
C
[A
[B
Flange
Flange
C
Flange
ANSI Class 150 2 RF SUS304
ANSI Class 150 3 RF SUS304
ANSI Class 150 4 RF SUS304
DIN PN10 DN50 SUS304
DIN PN10 DN80 SUS304
DIN PN10 DN100 SUS304
JIS 5K 65 FF SUS304
JIS 10K 65 FF SUS304
JIS 10K 80 FF SUS304
JIS 10K 100 FF SUS304
JPI Class 150 4 RF SUS304
JPI Class 150 3 RF SUS304
Westinghouse
A
152.4
190.5
228.6
165
200
220
155
175
185
210
229
190
155
B
C
120.6 4 - [19
152.4 4 - [19
190.5 8 - [19
125
4 - [18
160
8 - [18
180
8 - [18
130
4 - [15
140
4 - [19
150
8 - [19
175
8 - [19
190.5 8 - [19
152.4 4 - [19
127 4 - [11.5
t
19
24
24
18
20
20
14
18
18
18
24
24
14
[A
[B
Flange
F11_01.EPS
• Standard Accessories
Item
Part. No.
Qty
1
3.15A
Allen wrench
A1113EF
L9827AB
1
For lock screw
Fuse
Description
T02-01.EPS
IM 11M12A01-05E
2-7
Model ZR202G...-P(with pressure compensation) Integrated type Zirconia High
Temperature Humidity Analyzer
Unit : mm
34264
L
[123
Display side
t
L= 0.4, 0.7,
1.0, 1.5, 2.0,
2.5, 3.0 (m)
Reference air outlet
125
48.5
25
[50.8
122
Rc1/4 or 1/4NPT
Reference air inlet
PIPING
:B
4-G1/2,2-1/2NPT etc.
Cable connection port
PIPING:A
15663
25664
Stop
valve
Terminal side
170
49
Rc1/4 or 1/4NPT
Calibration gas inlet
C
[A
[B
Flange
Flange
C
Flange
A
152.4
190.5
228.6
165
200
220
155
175
185
210
229
190
155
ANSI Class 150 2 RF SUS304
ANSI Class 150 3 RF SUS304
ANSI Class 150 4 RF SUS304
DIN PN10 DN50 SUS304
DIN PN10 DN80 SUS304
DIN PN10 DN100 SUS304
JIS 5K 65 FF SUS304
JIS 10K 65 FF SUS304
JIS 10K 80 FF SUS304
JIS 10K 100 FF SUS304
JPI Class 150 4 RF SUS304
JPI Class 150 3 RF SUS304
Westinghouse
B
120.6
152.4
190.5
125
160
180
130
140
150
175
190.5
152.4
127
C
4 - [19
4 - [19
8 - [19
4 - [18
8 - [18
8 - [18
4 - [15
4 - [19
8 - [19
8 - [19
8 - [19
4 - [19
4 - [11.5
t
19
24
24
18
20
20
14
18
18
18
24
24
14
PIPING
A
B
B
A
B
B
A
A
B
B
B
B
A
[A
[B
Flange
F11_02.EPS
• Standard Accessories
Item
Part. No.
Qty
1
3.15A
Allen wrench
A1113EF
L9827AB
1
For lock screw
Fuse
Description
T02-01.EPS
2-8
IM 11M12A01-05E
2. Specifications
• Hood (Option code /H)
150
64
63
150 63
274
Hood Material : Aluminum
Hood Weight : Approx. 800g
ZR202G-F.eps
IM 11M12A01-05E
2-9
2.1.3 ZH21B Dust Protector
This protector is designed to protect the probe output from dust agitation (i.e., to prevent
combustible materials from entering the probe cell where humidity measurements are
made) in a dusty environment.
Insertion length : 0.428m
Flange : JIS 5K 80 FF equivalent or ANSI Class 150 4 FF SUS304. (However, flange
thickness is different.)
Material : SUS 316 (JIS), SUS 304 (JIS) (flange)
Weight: Approx. 6kg (JIS), approx. 8.5kg (ANSI)
Mounting : Mounted on the probe or process flange with bolts and associated nuts
and washers.
d Model and Codes
Suffix code Option
code
Model
ZH21B
Description
Dust protector (0 to 6008C)
Insertion
length
Flange
-040
0.428 m
-J
JIS 5K 80 FF SUS304
(1)
ANSI Class 150 4B FF SUS304 * (2)
-A
Style code
Style B
*B
* The flange thickness varies.
Specify the probe ZR202G-040 -h-K in case of (1).
ZR202G-040 -h-C in case of (2).
T2.1.3.1.EPS
d External Dimensions
Unit : mm
428
t
D
[76.3
[72
[A
Install facing upwards
C
C
[B
[B
Insertion hole
[80 minimum
ANSI flange
Insertion hole
[80 minimum
JIS flange
A
B
C
t
D
180
145
4-[19
12
40
ANSI Class 150 4B FFSUS304 228.5 190.5 8-[19
12
50
Flange
JIS 5K 80 FF SUS304
2-10
F2.1.3.1.EPS
IM 11M12A01-05E
2. Specifications
2.2 ZA8F Flow Setting Unit and ZR20H Automatic Calibration Unit
2.2.1 ZA8F Flow Setting Unit
This flow setting unit is applied to the reference gas and the calibration gas in a system
configuration (System 2).
This unit consists of a flow meter and flow control valves to control the flow of calibration gas and reference air.
Standard Specifications
Flowmeter: Calibration gas; 0.1 to 1.0 l/min. Reference air; 0.1 to 1.0 l/min.
Construction : Dust-proof and rainproof construction
Case Material: SPCC (Cold rolled steel sheet)
Painting : Baked epoxy resin , Dark-green (Munsell 2.0 GY 3.1/0.5 or equivalent)
Pipe Connections : Rc1/4 or 1/4FNPT
Reference Air pressure : Clean air supply of measured gas pressure plus approx. 50 kPa
G (or measured gas pressure plus approx. 150 kPa G when a check valve is used,
maximum pressure rating is 300 kPa G) spressure at inlet of the auto-calibretion unitd
Air Consumption: Approx. 1.5 l/min
Weight: Approx. 2.3 kg
Calibration gas (zero gas, span gas) flow: 0.7 l/min (at calibration time only)
Note
Use instrument air for span calibration gas, if no instrument air is available, contact
YOKOGAWA.
Model and Codes
Model
Suffix code
Style code
Description
Standard gas unit
ZA8F
Joint
Option code
-J
-A
*B
Rc 1/4
With 1/4'' NPT adapter
Style B
T2.5E.EPS
IM 11M12A01-05E
2-11
External Dimensions
[6 hole
Unit: mm
180
140
REFERENCE
ZERO
SRAN
Span gas inlet
Zero gas outlet
Zero gas inlet
26
Reference air outlet
CHECK
222.8
235.8
REFERENCE
20
35
35
35
35
20
8
35
70
4-Rc1/4 or 4-NPT(F)
Instrument air inlet
CHECK
OUT
Flow
meter
ZERO
GAS IN
SPAN
GAS IN
REF
OUT
Flow
meter
AIR IN
Instrument air
Approx 1.5 l/min.
Airset
Air pressure:
without check valve ; measured gas pressure 1 approx.50 kPaG
with check valve ; measured gas pressure 1 approx.150 kPaG
F2.6E.EPS
2-12
IM 11M12A01-05E
2. Specifications
2.2.2 ZR20H Automatic Calibration Unit
This automatic calibration unit is applied to supply specified flow of reference gas and
calibration gas during automatic calibration to the detector in a system configuration
(System 3).
• Specifications
Equipped with the analyzer when automatic calibration is specified in the suffix code of
the ZR202G Integrated type by selecting either “-A (Horizontal mounting)” or “-B
(Vertical mounting)”. The ZR20H should be arranged when auto-calibration is to be
required after the ZR202H has been installed. Ask Yokogawa service station for its
mounting.
Construction: Dust-proof and rainproof construction: NEMA4X/IP67 (excluding flowmeter)
Mounting: Mounted on ZR202G, no vibration
Materials: Body: Aluminum alloy, Piping: SUS316 (JIS), SUS304 (JIS), Flowmeter: MA
(Methacrylate resin), Bracket; SUS304 (JIS)
Finish: Polyurethane corrosion-resistance coating, Case: Mint green (Munsell 5.6BG3.3
/2.9), Cover: Mint green (Munsell 5.6BG3.3/2.9)
Piping Connection: Refer to Model and Suffix Codes
Power Supply: 24V DC (from ZR202G), Power consumption: Approx. 1.3 W
Reference Air Pressure: Sample gas pressure plus Approx. 150 kPa (690 kPa max.),
(Pressure at inlet of auto-calibration unit)
Air Consumption: Approx. 1.5 l/min
Weight: Approx. 2 kg
Ambient Temperature: -20 to +558 C, no condensing or freezing
Ambient Humidity: 0 to 95% RH
Storage Temperature: -30 to +658 C
• Model and Codes
Model
Suffix code
Option code
Automatic calibration unit for ZR202G *1
ZR20H
Gas piping connection
Reference air *2
Mounting
-
Description
Rc 1/4
1/4" NPT
-R
-T
Instrument air
Pressure compensated
-E
-P
Horizontal mounting
Vertical mounting
-A
-B
-A
Always -A
*1 Ask Yokogawa service station for additional mounting of ZR20H to the preinstalled ZR202G.
*2 Select the appropriate reference air of ZR20H according to the one of ZR202G.
T22E.EPS
IM 11M12A01-05E
2-13
• External Dimensions
(1) For Horizontal Mounting (-A)
Unit: mm
242
257
[ 84
[ 80
AUTO CAL. UNIT
SPAN IN
REF IN
ZERO IN
MODEL
SUFFIX
ZR20H
STYLE
S1
SUPPLY
690kPa MAX.
-20 TO 558C
ZR202G
AMB.TEMP
USED WITH
NO.
40
40
66.5
166.5
44 MAX
56
Zero gas inlet
Rc1/4 or 1/4NPT(Female)
Reference gas inlet
Rc1/4 or 1/4NPT(Female)
Span gas inlet
Rc1/4 or 1/4NPT(Female)
(2) Vertical Mounting (-B)
49
[ 84
[8
111
0
AUTO CAL. UNIT
MODEL
STYLE
SPAN IN
REF IN
ZR20H
SUFFIX
S1
SUPPLY
690kPa MAX.
AMB.TEMP -20 TO 558C
ZERO IN
USED WITH ZR202G
NO.
40
40
66.5
166.5
44 MAX
180
Zero gas inlet
Rc1/4 or 1/4NPT(Female)
Reference gas inlet
Rc1/4 or 1/4NPT(Female)
Span gas inlet
Rc1/4 or 1/4NPT(Female)
ZR20H-E.eps
ZR202G body
Calibration gas
Reference gas
Check valve
Span-gas
solenoid valve
Span-gas flowmeter
Reference-gas flowmeter
SPAN IN
Zero-gas
solenoid valve
To Air set
REF. IN
To Zero-gas cylinder
Needle valve
ZERO IN
Autocalibration unit
Zero-gas flowmeter
2-14
F4.11-1E.EPS
IM 11M12A01-05E
2. Specifications
2.3 ZO21S Standard Gas Unit
This is a handy unit to supply zero gas and span gas to the detector in a system configuration based on System 1. It is used in combination with the detector only during
calibration.
Standard Specifications
Function : Portable unit for calibration gas supply consisting of span gas (air) pump,
zero gas cylinder with sealed inlet, flow rate checker and flow rate needle valve.
Sealed Zero Gas Cylinders (6 provide): E7050BA
Capacity : 1 l
Filled pressure : Approx. 686 kPa G (at 35 8 C)
Composition : 0.95 to 1.0 vo1% 02+N2 balance
Power Supply : l00, 110, 115, 200, 220, 240 V AC6 10%, 50/60 Hz
Power Consumption : Max. 5 VA
Case Material : SPCC (Cold rolled steel sheet)
Paint : Epoxy resin, baked
Paint Color :
Mainframe ; Munsell 2.0 GY3.1/0.5 equivalent
Cover; Munsell 2.8 GY6.4/0.9 equivalent
Piping :F6 3F4 mm flexible tube connection
Span Gas : Internal pump drains in air from atmosphere, and feeds to detector.
Weight: Approx. 3 kg
p Non CE Mark.
Model and Codes
Model
Suffix code
Option code
Power
supply
Description
Standard gas unit
ZO21S
-2
-3
-4
-5
-7
-8
200 V AC 50/60 Hz
220 V AC 50/60 Hz
240 V AC 50/60 Hz
100 V AC 50/60 Hz
110 V AC 50/60 Hz
115 V AC 50/60 Hz
Japanese version
English version
-J
-E
Panel
Style code
*A
Style A
T2.6E.EPS
253
228
92
Unit : mm
Flow checker
Span gas valve
Zero gas valve
1600
Gas outlet
354
Zero gas cylinder (6 cylinder): E7050BA
IM 11M12A01-05E
F2.7E.EPS
2-15
2.4 Other Equipment
2.4.1 Stop Valve (part number: L9852CB or G7016XH)
This valve is mounted on the calibration gas line in the system to allow for one-touch
calibration. This applies to the system configuration shown for System 1 in section1.
Standard Specifications
Connection : Rc 1/4 or 1/4 FNPT
Material : SUS 316 (JIS)
Weight : Approx. 80 g
Description
Part No.
L9852CB
Joint: RC 1/4, Material: SUS 316 (JIS)
G7016XH
Joint: 1/4 NPT, Material: SUS 316 (JIS)
T2.9E.EPS
55
(Full open length)
43
Rc1/4 or 1/4NPT
40
F15.EPS
2.4.2 Check Valve (part number: K9292DN or K9292DS)
This valve is mounted on the calibration gas line (directly connected to the detector).
This is applied to a system based on the system configuration (System 2 and 3).
This valve prevents the process gas from entering the calibration gas line. Although it
functions as the stop valve, operation is easier as it does not require opening/closing at
each calibration.
Screw the check valve into the calibration gas inlet of the detector instead of the stop
valve.
Standard Specification
Connection : Rc1/4 or 1/4FNPT
Material : SUS304 (JIS)
Pressure : 70 kPa G or more and 350 kPa G or less
Weight: Approx. 40 g
Part No.
Description
K9292DN
Joint: RC 1/4, Material: SUS304 (JIS)
K9292DS
Joint: 1/4 NPT, Material: SUS304 (JIS)
T2.10E.EPS
2-16
IM 11M12A01-05E
2. Specifications
K9292DN : Rc 1/4(A part),R 1/4(B)
K9292DS : 1/4FNPT(A part),1/4NPT(Male)(B part)
unit : mm
A
B
Approx.19
Approx.54
F2.11E.EPS
2.4.3 Air Set
This set is used to lower the pressure when instrument air is used as the reference and
span gases.
• Part number: K9473XH or K9473XJ Standard Specifications
Primary Pressure : Max. 2 MPa G
Secondary Pressure : 0 to 0.25 MPa G
Connection : Rc1/4 or 1/4FNPT (included joint adapter)
Weight: Approx.1 kg
Description
Part No.
K9473XH
Joint: Rc 1/4, Material: Aluminum
K9473XJ
Joint: 1/4 NPT (F) , Material: Body; Aluminum, Adapter; Zinc alloy
T2.11E.EPS
Unit: mm
Dimensions in parentheses are approximate.
IN
(135.5)
OUT
(53.5)
(63)
[54
(43.5)
60
[48
40
69.5
(116)
7
28
18.5
42
8
Bracket Mounting Dimensions
K9473XH: Piping connection (IN: Primary side, OUT: Secondary side), Rc1/4
K9473XJ: Piping connection (IN: Primary side, OUT: Secondary side), 1/4NPT
IM 11M12A01-05E
2-17
• Part. no. G7004XF or K9473XG Standard Specification
Primary Pressure: Max. 1 MPa G
Secondary Pressure: 0.02 to 0.5 MPa G
Connection: Rc1/4 or 1/4 FNPT with joint adapter
Weight : Approx. 1 kg
Part No.
Description
G7004XF
Joint: Rc 1/4, Material: Zinc Alloy
K9473XG
Joint: 1/4 NPT (F) , Material: Body; Zinc Alloy, Adapter; SUS316
T2.13E.EPS
Unit :mm
View A
Panel cut dimensions
Horizontal
mounting
22
Vertical
mounting
[15
40
+0.5
2-2.2 -0
40
2-[6.5
max. 55
2-[6 screw depth 10
Secondary
pressure
gauge
Secondary
Panel (Vertical
mounting)
A
88
Primary
Max. 210
[74
Panel (Horizontal
mounting)
G7004XF: Rc 1/4
K9473XG: 1/4NPT connector
Approx. 122
2-18
IM 11M12A01-05E
2. Specifications
2.4.4 Zero-gas Cylinder (part number: G7001ZC)
The gas from this cylinder is used as the calibration zero gas and detector purge gas.
Standard Specifications
Capacity : 3.4 l
Filled pressure : 9.8 to 12 MPa G
Composition : 0.95 to 1.0 vol% O2 in N2
(Note) Export of such high pressure filled gas cylinders to most countries is prohibited
or restricted.
485
325
Unit : mm
[140
Weight : Approx. 6 kg
F2213.EPS
2.4.5 Pressure Regulator for Gas Cylinder (part number: G7013XF or G7014XF)
This regulator valve is used with the zero gas cylinders.
Standard Specifications
Primary Pressure: Max. 14.8 MPa G
Secondary Pressure: 0 to 0.4 MPa G
Connection : Inlet W22 14 threads, right hand screw
Outlet Rc1/4 or 1/4FNPT
Material: Brass body
Approx.112
Primary
Secondary
pressure gauge pressure gauge
Regulator handle
W22 (Righthanded screw)
Stop valve
ACH
IN
´J
HO
TAK
I
ACH
O
IH
TAK
Unit : mm
J ´
Secondary
safety valve
p Outlet
Primary
safety valve
Approx. 59
Approx. 82
Approx. 163
IM 11M12A01-05E
Approx. 174
Part No.
p Outlet
G7013XF
Rc1/4
G7014XF
1/4 NPT female screw
2-19
2.4.6 Case Assembly for Calibration-gas Cylinder (part number: E7044KF)
This case is used to store the zero gas cylinders.
Standard Specifications
Case Paint : Baked epoxy resin, Jade green (Munsell 7.5 BG 4/1.5)
Installation : 2B pipe mounting
Material : SPCC (Cold rolled steel sheet)
Weight : Approx. 3.3 kg,10 kg with gas cylinder
(Note) Export of such high pressure filled gas cylinders to most countries is prohibited
or restricted.
unit : mm
324
Pressure regulator
G7013XF/
G7014XF
200
180
Zero gas cylinder
(G7001ZC)
496
(Note) E7044KF (case assembly) has no zero gas cylinder
and pressure regulator.
2B pipe ([60.5)
F2.15E.EPS
2-20
IM 11M12A01-05E
2. Specifications
2.4.7 Model ZR202A Heater Assembly
Model
Suffix code
Option code
Description
Heater Assembly for ZR202G
ZR202A
0.4 m
0.7 m
1m
1.5 m
2m
2.5 m
3m
-040
-070
-100
-150
-200
-250
-300
Length
(p1)
Jig for change
with Jig
None
-A
-N
Always -A
-A
T2.2E.EPS
(p1) Suffix code of length should be selected as same as ZR202G installed.
* The heater is made of ceramic, do not drop or subject it to pressure stress.
Unit : mm
30
[ 45
(K9470BX)
K9470BX
Jig for change
[ 21.7
d External Dimensions
L612
L length
F2.16.EPS
IM 11M12A01-05E
Weight (kg)
Model & Code
L
ZR202A-040
552
Approx. 0.8
ZR202A-070
852
Approx. 1.2
ZR202A-100
1152
Approx. 1.6
ZR202A-150
1652
Approx. 2.2
ZR202A-200
2152
Approx. 2.8
ZR202A-250
2652
Approx. 3.4
ZR202A-300
3152
Approx. 4.0
2-21
3. Installation
3. Installation
This chapter describes how to install the following equipment and how to test the
insulation resistance.
3.1 High-temperature Humidity Analyzer
3.2 ZA8F Flow Setting Unit
3.3 ZR20H Automatic Calibration Unit
3.4 Case Assembly for Calibration-gas Cylinder (E7044KF)
3.5 Insulation Resistance Test
3.1 Installation of High-temperature Humidity Analyzer
3.1.1 Location
The following should be taken into consideration when installing the analyzer:
(1) Easy and safe access to the analyzer for checking and maintenance work.
(2) Ambient temperature of no more than 558 C, and the terminal box should not be
affected by radiant heat.
(3) No corrosive gases.
CAUTION
A natural convection type analyzer (model ZR202G-h-h-h-C), which uses ambient air
as reference gas, requires that the ambient oxygen concentration be constant.
(4) No vibration.
(5) The measured gas satisfies the specifications described in Chapter 2.
(6) No measured gas-pressure fluctuations.
CAUTION
• Be sure to select the installation location where the ambient temperature is between
-208 C and 558 C for the ZR202G Integrated-type High-temperature Humidity Analyzer.
IM 11M12A01-05E
3-1
3.1.2 Probe Insertion
CAUTION
• The outside dimension of detector may vary depending on its options. Use a pipe that
is large enough for the detector. Refer to Figure 3.1 for the dimensions.
• If the detector is mounted horizontally, the calibration gas inlet and reference gas inlet
should face downwards.
• When using the detector with pressure compensation, ensure that the flange gasket
does not block the reference air outlet on the detector flange. If the flange gasket
blocks the outlet, the detector cannot conduct pressure compensation. Where necessary, make a notch on the flange gasket. Confirm the outside dimensions of the
detector in Chapter 3.6 before installation.
• The sensor (zirconia cell) at the probe tip may deteriorate due to thermal shock if
water drops are allowed to fall on it, as it is always at high temperature.
(1) Do not orient the end of the detector probe upwards.
(2) If the probe length is 2.5 meters or longer, mount the detector vertically (no more
than a 58 tilt).
(3) Position the detector probe perpendicular to the measurement gas flow, or point the
tip downstream.
Figure 3.1 illustrates an example of the probe insertion.
(vertical)
Bounds of the probe
insertion hole location
Flange corresponds
to the detector size
100 mm
*1
Type
Standard
With dust protector
Outside diameter of detector
50.8 mm in diameter (Note)
80 mm in diameter or longer (Note)
(horizontal)
*1 Note
100 mm
Four-hole flange Eight-hole flange
(Note)
When the detector with the ZH21B dust protector is used, provide a 80-mm dia.
or more flange, as shown in the above figure.
When using the detector with pressure compensation, ensure that the flange
gasket does not block the reference air outlet on the detector flange. If the flange
gasket blocks the outlet, the detector cannot perform pressure compensation.
Where necessary, make a notch in the flange gasket. Confirm the outside
dimensions of the detector in Chapter 3.6 before installation.
JIS flange
(the detector with
dust protector)
F3.1E.EPS
Figure 3.1 Example of Probe Insertion
3-2
IM 11M12A01-05E
3. Installation
3.1.3 Installation of the Detector
CAUTION
• The cell (sensor) at the tip of the detector is made of ceramic (zirconia). Do not drop
the detector, as impact will damage it.
• If the detector is mounted horizontally, the calibration gas inlet and reference gas inlet
should face downwards.
• A gasket should be used between the flanges to prevent gas leakage. The gasket
material should be heatproof and corrosion-proof, suited to the characteristics of the
measured gas.
The following should be taken into consideration when mounting the general-use
detector:
<General-use detector>
(1) Make sure that the cell mounting screws (four) at the probe tip are not loose.
(2) Where the detector is mounted horizontally, the calibration gas inlet and the reference gas inlet should face downward.
3.1.4 Installation of ZH21B Dust Protector
(1) Place the gasket between the flanges and mount the dust protector in the probe
insertion hole.
(2) Make sure that the cell assembly mounting screws (four) at the probe tip are not
loose.
(3) Mount the detector so that the calibration gas inlet and the reference gas inlet face
downward.
Unit : mm
Reference gas inlet
Calibration gas inlet
F3.1.4.1.EPS
Figure 3.2 Detector with Dust Protector
IM 11M12A01-05E
3-3
3.2 Installation of ZA8F Flow Setting Unit
3.2.1 Location
The following should be taken into consideration:
(1) Easy access to the unit for checking and maintenance work.
(2) Near to the analyzer for operating keys on the panel.
(3) No corrosive gas.
(4) An ambient temperature of not more than 558 C and little changes of temperature.
(5) No vibration.
(6) Little exposure to rays of the sun or rain.
3.2.2 Mounting of ZA8F Flow Setting Unit
The flow setting unit can be mounted either on a pipe (nominal JIS 50 A) or on a wall.
It should be positioned vertically so that the flow meter works correctly.
<Pipe Mounting>
(1) Prepare a vertical pipe of sufficient strength (nominal JIS 50A : O.D. 60.5 mm) for
mounting the flow setting unit. (The unit weighs approximately 2 to 3.5 kg.)
(2) Mount the flow setting unit on the pipe by tightening the nuts with the U-bolt so that
the metal fitting is firmly attached to the pipe.
F3.12E.EPS
Figure 3.3 Pipe Mounting
3-4
IM 11M12A01-05E
3. Installation
<Wall Mounting>
(1) Make a hole in the wall as illustrated in Figure 3.4.
unit : mm
223
140
4 - [6 hole, or M5 screw
F3.13E.EPS
Figure 3.4 Mounting holes
(2) Mount the flow setting unit. Remove the pipe mounting parts from the mount fittings
of the flow setting unit and attach the unit securely on the wall with four screws.
F3.14E.EPS
Figure 3.5 Wall mounting
IM 11M12A01-05E
3-5
3.3 Installation of ZR20H Automatic Calibration Unit
3.3.1 Location
The following should be taken into consideration:
(1) Easy access to the unit for checking and maintenance work.
(2) Near to the detector and the converter
(3) No corrosive gas.
(4) An ambient temperature of not more than 558 C and little change of temperature.
(5) No vibration.
(6) Little exposure to rays of the sun or rain.
3.3.2 Mounting of ZR20H Automatic Calibration Unit
ZR202G - h - h - h - h - A or –B is shipped with autocalibration unit attached.
The autocalibration unit includes flowmeters and solenoid valves, so – to ensure reliable
and accurate operation — Flowmeter should be mounted vertically. The associated
probe is designed for horizontal or vertical mounting.
If you buy the autocalibration unit afterward, and need to install it or replace it, contact
our service representative.
3-6
IM 11M12A01-05E
3. Installation
Basic spec. code -A : Horizontal mounting
Display
Terminal box
214
44 MAX
244
258
unit ; mm
40
40
Zero gas inlet
Rc 1/4 or 1/4NPT(Female)
66.5
166.5
Reference gas inlet
Rc 1/4 or 1/4NPT(Female)
Span gas inlet
Rc 1/4 or 1/4NPT(Female)
Basic spec. code -B : Vertical mounting
166.5
45
60
160
Span gas inlet
Rc 1/4 or 1/4NPT(Female)
180
44 MAX
Reference gas inlet
Rc 1/4 or 1/4NPT(Female)
40
40
66.5
Zero gas inlet
Rc 1/4 or 1/4NPT(Female)
F3.6E.EPS
Figure 3.6 Automatic Calibration Unit Mounting
IM 11M12A01-05E
3-7
3.4 Installation of the Calibration-gas Unit Case (E7044KF)
The calibration gas unit case is used to store the G7001ZC zero gas cylinders.
3.4.1 Location
The following should be taken into consideration:
(1) Easy access for cylinder replacement
(2) Easy access for checking
(3) Near to the detector and converter as well as the flow setting unit.
(4) The temperature of the case does not exceed 408 C due to rays of the sun or radiated
heat.
(5) No vibration
3.4.2 Mounting
Mount the calibration gas unit case on a pipe (nominal JIS 50A) as follows:
(1) Prepare a vertical pipe of sufficient strength (nominal JIS 50A : O.D. 60.5 mm) for
mounting the flow setting unit. (The combination of the calibration gas unit case and
the calibration gas cylinder weighs approximately 4.2 kg.)
(2) Mount the unit case on the pipe by tightening the nuts with the U-bolt so that the
metal fitting is firmly attached to the pipe.
A pipe to be mounted
(nominal JIS 50A: O.D. 60.5 mm)
F3.16E.EPS
Figure 3.7 Pipe Mounting
3-8
IM 11M12A01-05E
3. Installation
3.5 Insulation Resistance Test
Even if the testing voltage is not so great it causes dielectric breakdown, testing may
cause deterioration in insulation and a possible safety hazard. Therefore, conduct this
test only when it is necessary.
The applied voltage for this test shall be 500 V DC or less. The voltage shall be applied
for as short a time as practicable to conform that insulation resistance is 20 MV or more.
Remove wiring from the converter and the detector.
1. Remove the jumper plate located between terminal G and the protective grounding
terminal.
2. Connect crossover wiring between L and N.
3. Connect an insulation resistance tester (with its power OFF). Connect (+) terminal to
the crossover wiring, and (-) terminal to ground.
4. Turn the insulation resistance tester ON and measure the insulation resistance.
5. After testing, remove the tester and connect a 100 kV resistance between the crossover wiring and ground to discharge.
6. Testing between the heater terminal and ground, contact output terminal and ground,
analog output/input terminal and ground can be conducted in the same manner.
7. Although contact input terminals are isolated, insulation resistance test cannot be
conducted because the breakdown voltage of the surge-preventing arrester between
the terminal and ground is low.
8. After conducting all the tests, replace the jumper plate as it was.
Contact input 1
Insulation
resistance
- tester +
Crossover wiring
Contact input 2
1
DI-1
2
DI-2
3
DI-C
4
DO-1
5
DO-1
6
DO-2
7
DO-2
8
FG
9
AO
(+)
10
AO
(-)
11
L
12
N
13
G
14
FG
Crossover wiring
Insulation
resistance
- tester +
Remove
jumper
plate
Insulation
resistance
- tester +
F3.17E.EPS
IM 11M12A01-05E
3-9
3.6 Installation of the High Temperature Humidity Analyzer (with pressure compensation)
Installation for each flange type
Unit: mm
1. ANSI Class 150 2 RF
d ZR202G-hhh-h-A-P
Flange : ANSI Class 150 2 RF SUS304
34264
L
t
C
Rc1/4or1/4NPT
Reference air inlet
33
25
[A
[B
Reference gas outlet
PIPING
:B
Flange
2-G1/2,2-1/1NPT etc.
Cable connection port
PIPING:A
15663
25664
Stop
Valve
49
Rc 1/4or1/4NPT
Calibration gas inlet
Model, Code
L
Flange
Specification
A
B
C
t
PIPING
Weight
(kg)
ZR202G-040-h-A
400
Approx. 8
ZR202G-070-h-A
700
Approx. 9
ZR202G-100-h-A
1000
ZR202G-150-h-A
1500
ZR202G-200-h-A
2000
Approx. 14
ZR202G-250-h-A
2500
Approx. 16
ZR202G-300-h-A
3000
Approx. 17
ANSI Class 150
2 RF SUS304
Approx. 10
152.4
120.6
4-[19
19
A
Approx. 12
F3.18E.EPS
3-10
IM 11M12A01-05E
3. Installation
2. ANSI Class 150 3 RF
d ZR202G-hhh-h-B-P
Flange : Equivalent to ANSI Class 150 3 RF SUS304
Rc1/4 or 1/4NPT
Reference air inlet
34264
L
2-G1/2, 2-1/2NPT etc.
Cable connection port
t
C
42
25
[A
[B
Reference gas outlet
PIPING
:B
Flange
Flange
PIPING:A
15663
25664
49
Flange
L
Model, Code
Stop Valve
Specification
B
A
C
PIPING
t
Weight
(kg)
ZR202G-040-h-B
400
Approx. 11
ZR202G-070-h-B
700
Approx. 12
ZR202G-100-h-B
1000
ZR202G-150-h-B
1500
ZR202G-200-h-B
2000
Approx. 16
ZR202G-250-h-B
2500
Approx. 18
ZR202G-300-h-B
3000
Approx. 20
ANSI Class 150
3 RF SUS304
Approx. 13
190.5
152.4
4-[19
Approx. 15
B
24
F3.19E.EPS
3. ANSI Class 150 4 RF
d ZR202G-hhh-h-C-P
Flange : ANSI Class 150 4 RF SUS304
Rc1/4 or 1/4NPT
Reference air inlet
34264
L
2-G1/2, 2-1/2NPT etc.
Cable connection port
t
C
45
25
[A
[B
Reference gas outlet
PIPING
:B
Flange
Flange
PIPING:A
15663
25664
Model, Code
L
Stop Valve
49
Flange
Specification
A
B
C
t
PIPING
Weight
(kg)
ZR202G-040-h-C
400
Approx. 13
ZR202G-070-h-C
700
Approx. 14
ZR202G-100-h-C
1000
ZR202G-150-h-C
1500
ZR202G-200-h-C
2000
Approx. 19
ZR202G-250-h-C
2500
Approx. 21
ZR202G-300-h-C
3000
Approx. 22
ANSI Class 150
4 RF SUS304
Approx. 15
228.6
190.5
8-[19
24
B
Approx. 17
F3.20E.EPS
IM 11M12A01-05E
3-11
4. DIN PN10 DN50
d ZR202G-hhh-h-E-P
Flange : DIN PN10 DN50 SUS304
Rc1/4 or 1/4NPT
Reference air inlet
34264
L
2-G1/2, 2-1/2NPT etc.
Cable connection port
t
C
33
25
[A
[B
Reference gas outlet
PIPING
:B
Flange
Flange
PIPING:A
15663
25664
49
Flange
L
Model, Code
Stop Valve
Specification
B
A
C
PIPING
t
Weight
(kg)
ZR202G-040-h-E
400
Approx. 9
ZR202G-070-h-E
700
Approx. 10
ZR202G-100-h-E
1000
ZR202G-150-h-E
1500
ZR202G-200-h-E
2000
Approx. 14
ZR202G-250-h-E
2500
Approx. 16
ZR202G-300-h-E
3000
Approx. 18
DIN PN10 DN50
SUS304
Approx. 11
165
125
4-[18
Approx. 12
A
18
F3.21E.EPS
5. DIN PN10 DN80
d ZR202G-hhh-h-F-P
Flange : DIN PN10 DN80 SUS304
Rc1/4 or 1/4NPT
Reference air inlet
34264
L
2-G1/2, 2-1/2NPT etc.
Cable connection port
t
C
42
25
[A
[B
Reference gas outlet
PIPING
:B
Flange
Flange
PIPING:A
15663
25664
Model, Code
L
Stop Valve
49
Flange
Specification
A
B
C
t
PIPING
Weight
(kg)
ZR202G-040-h-F
400
Approx. 10
ZR202G-070-h-F
700
Approx. 12
ZR202G-100-h-F
1000
ZR202G-150-h-F
1500
ZR202G-200-h-F
2000
Approx. 16
ZR202G-250-h-F
2500
Approx. 18
ZR202G-300-h-F
3000
Approx. 20
DIN PN10 DN80
SUS304
Approx. 13
200
160
8-[18
20
B
Approx. 14
F3.22E.EPS
3-12
IM 11M12A01-05E
3. Installation
6. DIN PN10 DN100
d ZR202G-hhh-h-G-P
Flange : DIN PN10 DN100 SUS304
Rc1/4 or 1/4NPT
Reference air inlet
34264
L
2-G1/2, 2-1/2NPT etc.
Cable connection port
t
C
45
25
[A
[B
Reference gas outlet
PIPING
:B
Flange
Flange
PIPING:A
15663
25664
49
Flange
L
Model, Code
Stop Valve
Specification
B
A
C
Weight
(kg)
PIPING
t
ZR202G-040-h-G
400
Approx. 11
ZR202G-070-h-G
700
Approx. 13
ZR202G-100-h-G
1000
ZR202G-150-h-G
1500
ZR202G-200-h-G
2000
Approx. 17
ZR202G-250-h-G
2500
Approx. 19
ZR202G-300-h-G
3000
Approx. 21
DIN PN10 DN100
SUS304
Approx. 14
220
180
8-[18
Approx. 15
B
20
F3.23E.EPS
7. JIS 5K 65 FF
d ZR202G-hhh-h-K-P
Flange : JIS 5K 65 FF SUS304
Rc1/4 or 1/4NPT
Reference air inlet
34264
L
2-G1/2, 2-1/2NPT etc.
Cable connection port
t
C
33
25
[A
[B
Reference gas outlet
PIPING
:B
Flange
Flange
PIPING:A
15663
25664
Model,Code
ZR202G-040-u-K
ZR202G-070-u-K
ZR202G-100-u-K
ZR202G-150-u-K
ZR202G-200-u-K
ZR202G-250-u-K
ZR202G-300-u-K
L
400
700
1000
1500
2000
2500
3000
Stop Valve
49
Flange
Specification
A
B
C
t
PIPING
Weight
(kg)
Approx, 8
Approx. 9
JIS 5K 65 FF
SUS304
Approx. 10
155
130
4-[15
14
A
Approx. 12
Approx. 14
Approx. 15
Approx. 17
F3.24E.EPS
IM 11M12A01-05E
3-13
8. JIS 10K 65 FF
d ZR202G-hhh-h-L-P
Flange : JIS 10K 65 FF SUS304
342–4
L
t
C
Rc1/4 or 1/4NPT
Reference air inlet
33
25
flA
flB
*1
Reference gas outlet
PIPING
:B
Flange
2-G1/2, 2-1/2NPT etc.
Cable connection port
PIPING:A
156–3
Stop
Valve
256–4
49
Rc1/4 or 1/4NPT
Calibration gas inlet
Model, Code
L
ZR202G-040-u-L
ZR202G-070-u-L
ZR202G-100-u-L
ZR202G-150-u-L
ZR202G-200-u-L
ZR202G-250-u-L
ZR202G-300-u-L
400
700
1000
1500
2000
2500
3000
Flange
Specification
A
B
C
t
PIPING
Weight
(kg)
Approx.
9
Approx. 10
JIS 10K 65 FF
SUS304
175
140
4-[19
Approx. 11
A
18
Approx. 13
Approx. 15
Approx. 16
Approx. 18
F3.25E.EPS
9. JIS 10K 80 FF
d ZR202G-hhh-h-M-P
Flange : JIS 10K 80 FF SUS304
L
342–4
t
Rc1/4 or 1/4NPT
Reference air inlet
C
42
25
flA
*1
flB
Reference gas outlet
PIPING
:B
Flange
2-G1/2, 2-1/2NPT etc.
Cable connection port
PIPING:A
156–3
256–4
Stop
Valve
49
Rc1/4 or 1/4NPT
Calibration gas inlet
Model, Code
L
ZR202G-040-u-M
ZR202G-070-u-M
ZR202G-100-u-M
ZR202G-150-u-M
ZR202G-200-u-M
ZR202G-250-u-M
ZR202G-300-u-M
400
700
1000
1500
2000
2500
3000
Flange
Specification
A
B
C
t
PIPING
Weight
(kg)
Approx.
9
Approx. 10
JIS 10K 80 FF
SUS304
185
150
8-fl19
18
B
Approx. 11
Approx. 13
Approx. 15
Approx. 16
Approx. 18
F3.26E.EPS
3-14
IM 11M12A01-05E
3. Installation
10. JIS 10K 100 FF
d ZR202G-hhh-h-P-P
Flange : JIS 10K 100 FF SUS304
Rc1/4 or 1/4NPT
Reference air inlet
34264
L
2-G1/2, 2-1/2NPT etc.
Cable connection port
t
C
45
25
[A
[B
Reference gas outlet
PIPING
:B
Flange
Flange
PIPING:A
15663
25664
Model, Code
L
ZR202G-040-u-P
ZR202G-070-u-P
ZR202G-100-u-P
ZR202G-150-u-P
ZR202G-200-u-P
ZR202G-250-u-P
ZR202G-300-u-P
400
700
1000
1500
2000
2500
3000
Stop Valve
49
Flange
Specification
A
B
C
PIPING
t
Weight
(kg)
Approx. 10
Approx. 12
JIS 10K 100 FF
SUS304
210
8-[19
175
Approx. 13
B
18
Approx. 14
Approx. 16
Approx. 18
Approx. 20
F3.27E.EPS
11. JPI Class 150 4 RF
d ZR202G-hhh-h-R-P
Flange : JPI Class 150 4 RF SUS304
Rc1/4 or 1/4NPT
Reference air inlet
34264
L
2-G1/2, 2-1/2NPT etc.
Cable connection port
t
C
45
25
[A
[B
Reference gas outlet
PIPING
:B
Flange
Flange
PIPING:A
15663
25664
Model, Code
L
Stop Valve
49
Flange
Specification
A
B
C
t
PIPING
Weight
(kg)
ZR202G-040-h-R
400
Approx. 13
ZR202G-070-h-R
700
Approx. 14
ZR202G-100-h-R
1000
ZR202G-150-h-R
1500
ZR202G-200-h-R
2000
Approx. 19
ZR202G-250-h-R
2500
Approx. 21
ZR202G-300-h-R
3000
Approx. 22
JPI Class 150
4 RF SUS304
Approx. 15
229
190.5
8-[19
24
B
Approx. 17
F3.28E.EPS
IM 11M12A01-05E
3-15
12. JPI Class 150 3 RF
d ZR202G-hhh-h-S-P
Flange : JPI Class 150 3 RF
Rc1/4 or 1/4NPT
Reference air inlet
34264
L
t
C
42
25
[A
[B
Reference gas outlet
PIPING
:B
Flange
Flange
2-G1/2, 2-1/2NPT etc.
Cable connection port
PIPING:A
15663
25664
Stop
Valve
49
Rc1/4 or 1/4NPT
Calibration gas inlet
Flange
Weight
(kg)
Model, Code
L
ZR202G-040-u-S
400
Approx. 11
ZR202G-070-u-S
700
Approx. 12
ZR202G-100-u-S
1000
ZR202G-150-u-S
1500
ZR202G-200-u-S
2000
Approx. 16
ZR202G-250-u-S
2500
Approx. 18
ZR202G-300-u-S
3000
Approx. 20
Specification
A
B
C
PIPING
t
Approx. 13
JPI Class 150
3 RF SUS304
190
152.4
4-[19
B
24
Approx. 14
F3.29E.EPS
13.
Westinghouse
d ZR202G-hhh-h-W-P
Flange : Westinghouse
34264
L
t
C
Rc1/4 or 1/4NPT
Reference air inlet
33
25
[A
[B
Reference gas outlet
PIPING
:B
Flange
Flange
2-G1/2, 2-1/2NPT etc.
Cable connection port
PIPING:A
15663
25664
Stop
Valve
49
Rc1/4 or 1/4NPT
Calibration gas inlet
Model, Code
L
ZR202G-040-u-W
400
700
1000
1500
2000
2500
3000
ZR202G-070-u-W
ZR202G-100-u-W
ZR202G-150-u-W
ZR202G-200-u-W
ZR202G-250-u-W
ZR202G-300-u-W
Flange
Specification
A
B
C
t
PIPING
Weight
(kg)
Approx. 6
Approx. 7
Approx. 8
Westinghouse
155
127
4-[15
14
A
Approx.10
Approx.12
Approx.14
Approx.15
F3.30E.EPS
3-16
IM 11M12A01-05E
4. Piping
4. Piping
This chapter describes piping procedures in the three typical system configurations for
EXAxt ZR
Integrated-type Zirconia High Temperature Humidity Analyzer.
• Ensure that each check valve, stop valve and joints used for piping are not leaking.
Especially, if there is any leakage of the calibretion gas from piping and joints, it may
cause clogging of the piping or incorrect calibration.
• Be sure to conduct leakage test after installing the piping.
• Basically, apply instrument air (dehumidified by cooling to the dew point -208 C or
lower, and removing any dust, oil mist and the like) for the reference gas when
piping.
• When the instrument uses natural convection for reference gas (Model ZR202G-h-hh-C), ambient air near the probe is used for reference gas ; therefore the accuracy of
analysis will be affected by ambient temperature changes or the like. If more accurate
analysis is necessary, use instrument air (dehumidified by cooling to the dew point
-208 C or lower, and removing any dust, oil mist and the like) for reference gas.
Stable analyzing can be conducted when using instrument air.
4.1 Piping for System Configuration 1
The piping in System 1 is illustrated in Figure 4.1.
Model ZR202G Integrated type Zirconia
High Temperature Humidity Analyzer
Stop valve
~
100 to 240 V AC
Contact input
Analog output, Contact output
Digital output (HART)
Model ZO21S Standard gas unit
Calibration gas
~
F4.1E.EPS
100/110/115
200/220/240 V AC
Figure 4.1 Piping in System 1
Piping in System 1 is as follows:
• Place a stop valve through the nipple at the calibration gas inlet of the equipment.
Then mount a joint for a 6 mm (O.D.) x 4 mm (I.D.) soft tube at the stop valve
connection hole of the inlet side (see Section 4.1.2). The tube is to be connected to
this joint only during calibration.
CAUTION
• The stop valve should be connected directly to the equipment. If any piping is present
between the analyzer and the stop valve, water may condense in the pipe, which may
cause damage to the sensor by rapid cooling when the calibration gas is introduced.
• The reference gas should have an oxygen concentration identical to that of fresh air
(21%).
IM 11M12A01-05E
4-1
4.1.1 Piping Parts for System Configuration 1
Check that the parts listed in Table 4.1 are provided.
Table 4.1 Piping Parts
Equipment
Humidity Analyzer
Piping location
Calibration gas inlet
Parts
Stop valve
Nipple *
Joint for tube connection
Reference gas inlet
(Sealed up)
Description
(L9852CB or G7016XH) recommended by
YOKOGAWA
Rc1/4 or 1/4 NPT
Commercially available
Rc1/4 (1/4NPT) for a Commercially available
[63[4mm soft tube
(when piping is required, refer to Section 4.1.3)
T4.1E.EPS
Note: Parts marked with * are used when required.
4.1.2 Connection to the Calibration Gas Inlet
When carrying out calibration, connect the piping (6(O.D) 3 4(I.D.) mm tube) from the
standard gas unit to the calibration gas inlet of the equipment. Mount the stop valve (of
a quality specified by YOKOGAWA) through a nipple (found on the open market) as
illustrated in Figure 4.2, and mount a commercially available joint at the stop valve tip.
(The stop valve may be mounted on the equipment prior to shipping the equipment.)
Note 1 : Mount the stop valve in the vicinity of the equipment.
Stop valve
Nipple
Joint for tube
connection
F4102.EPS
Figure 4.2 Connection to the Calibration Gas Inlet
4.1.3 Connection to the Reference Gas Inlet
• Normally, no piping is required for the reference gas inlet when the equipment uses
natural convection for reference gas (models ZR202G-h-h-h-C). Leave the plug as
it is. If the air around the probe is polluted and the necessary oxygen concentration
(21 vol% O2) cannot be obtained, make an instrument air piping as in Section 4.2,
System 2.
• When the equipment uses instrument air for the reference gas, piping is required as
described in Section 4.2, System 2 (models ZR202G-h-h-h-E or -P).
4-2
IM 11M12A01-05E
4. Piping
4.2 Piping for System Configuration 2
Piping in System 2 is illustrated in Figure 4.7.
Model ZR202G Integrated type Zirconia
High Temperature Humidity Analyzer
Stop valve
or
Check valve
~
100 to 240 V AC
Contact input
Analog output, Contact output
Digital output (HART)
Model ZA8F flow setting unit
Flowmeter
Reference gas
Needle
valve
Air Set
Instrument air
Span gas (Same as Zero gas
Calibration unit )
Calibration gas
Calibration gas pressure regulator
F4.7E.EPS
Zero gas
cylinder
Calibration gas unit case
Figure 4.7 Piping for System 2
System 2 illustrated in Figure 4.7 requires piping as follows:
• Mount the stop valve or the check valve through a nipple to the reference gas inlet of
the equipment.
4.2.1 Piping Parts for System Configuration 2
Check that the parts listed in Table 4.2 are provided.
Table 4.2 Piping Parts
Equipment
General-use
Analyzer
Piping location
Calibration gas inlet
Parts
Stop valve or check valve
Nipple *
Zero gas cylinder
Regulator valve
Reference gas inlet
Joint for tube connection
Air set
Joint for tube connection
Note: Parts marked with * are used when required.
IM 11M12A01-05E
Description
Stop valve (L9852CB or G7016XH
provided by YOKOGAWA),
check valve (K9292DN or K9292DS)
recommended by YOKOGAWA
Rc1/4 or 1/4 NPT Commercially available
User´s scope
(G7013XF or G7014XF) recommended by
YOKOGAWA
Rc1/4 or 1/4 NPT Commercially available
(K9573XH/K9473XJ or G7004XF/K9473XG)
recommended by YOKOGAWA
Rc1/4 or 1/4 NPT Commercially available
T4.2E.EPS
4-3
4.2.2 Piping for the Calibration Gas
This piping is to be installed between the zero gas cylinder and the ZA8F flow setting
unit, and between the ZA8F flow setting unit and the ZR202G analyzer.
The cylinder should be placed in a calibration gas unit case or the like to avoid any
direct sunlight or radiant heat so that the gas cylinder temperature does not exceed 408 C.
Mount a pressure regulator (recommended by YOKOGAWA) on the cylinder.
Mount a stop valve or the check valve (recommended by YOKOGAWA) on the nipple
(commercially available) at the calibration gas inlet of the equipment as illustrated in
Figure 4.8. (The check valve or the stop valve may have been mounted on the equipment when shipped.) Connect the flow setting unit and the analyzer to a 6 mm (O.D.) 3
4 mm (I.D.) (or nominal size 1/4 inch or larger) stainless steel pipe.
Piping for the reference gas
6 mm (O.D.) by 4 mm (I.D.)
stainless steel pipe
Piping for the calibration gas
6 mm (O.D.) by 4 mm (I.D.)
stainless steel pipe
Stop valve or check valve
F4.8E.EPS
Figure 4.8 Piping for the Calibration Gas Inlet
4.2.3 Piping for the Reference Gas
Reference gas piping is required between the air source (instrument air) and the flow
setting unit, and between the flow setting unit and the analyzer.
Insert the air set next to the flow setting unit in the piping between the air source and
the flow setting unit.
Use a 6 mm (O.D.) 3 4 mm (I.D.) (or nominal size 1/4 inch or larger) stainless steel
pipe between the flow setting unit and the analyzer.
4-4
IM 11M12A01-05E
4. Piping
4.3 Piping for System Configuration 3
Piping in System 3 is illustrated in Figure 4.9. In System 3, calibration is automated;
however, the piping is basically the same as that of System 2. Refer to Section 4.2.
Adjust secondary pressure of both the air set and the zero gas regulator so that these two
pressures are approximately the same. The flow rate of zero and span gases (normally
instrument air) are set by individual needle valve. After installation and wiring, check
the calibration contact output (see Sec. 7.9.2), and adjust zero gas regulator and calibration gas needle valve so that zero gas flow is within the permitted range. Next check
span gas calibration contact output and adjust air set so that span gas flow is within the
permitted range.
Model ZR202G Integrated type Zirconia
High Temperature Humiddity Analyzer
~
Auto Calibration unit
ZR20H
100 to 240 V AC
Contact input
Analog output, contact output
Digital output (HART)
Air Set
Reference gas
Span gas
Calibration gas
Instrument air
Calibration gas
unit case
Calibration gas pressure regulator
Zero gas cylinder
F4.9E.EPS
Figure 4.9 Piping for System 3
IM 11M12A01-05E
4-5
d Installation of ZR20H AutoCalibretion Unit
Unit: mm
Horizontal mounting on the ZR202G (-A)
214
44 MAX
terminal box side
244
258
display side
40
40
66.5
Zero gas inlet
Rc1/4 or 1/4NPT(Female)
166.5
Reference air inlet
Rc1/4 or 1/4NPT(Female)
Span gas inlet
Rc1/4 or 1/4NPT(Female)
Vertical mounting on the ZR202G (-B)
166.5
45
60
160
Span gas inlet
Rc1/4 or 1/4NPT(Female)
180
44 MAX
Reference air inlet
Rc1/4 or 1/4NPT(Female)
40
40
66.5
Zero gas inlet
Rc1/4 or 1/4NPT(Female)
F4-10E.EPS
4-6
IM 11M12A01-05E
4. Piping
Piping Diagram of ZR20H
ZR202G body
Calibration gas
Reference gas
Check valve
Span-gas
solenoid valve
Span-gas flowmeter
Reference-gas flowmeter
SPAN IN
Zero-gas
solenoid valve
To Air set
REF. IN
To Zero-gas cylinder
Needle valve
ZERO IN
Autocalibration unit
Span-gas flowmeter
IM 11M12A01-05E
F4.11E.EPS
4-7
5. Wiring
5. Wiring
In this Chapter, the wiring necessary for connection to the EXAxtZR Integrated type
Zirconia High-temperature Humidity Analyzer is described.
5.1 General
CAUTION
• Never supply current to the equipment or any other device constituting a power circuit
in combination with the equipment, until all wiring is completed.
• This product complies with CE marking.
Where compliance with CE marking is necessary, the following wiring procedure is
necessary.
1. Install an external switch or circuit breaker to the power supply of the equipment.
2. Use an external switch or circuit breaker rated 5A and conforming with IEC 947-1 or
IEC 947-3.
3. It is recommended that the external switch or circuit breaker be mounted in the same
room as the equipment.
4. The external switch or circuit breaker should be installed within the reach of the
operator, and marked as the power supply switch of this equipment.
Wiring procedure
Wiring should be made according to the following procedure:
1. Be sure to connect the shield of the shielded line to FG terminal of the analyzer.
2. The most outer sheath of the signal line and the power cable should be stripped off
to the minimum necessary length.
3. Signal may be affected by noise emission when the signal lines, power cable and
heater cable are located in the same conduit. When using a conduit, signal lines
should be installed in a separate conduit from power and heater cables. Be sure to
ground the metal conduit.
4. Install the attached two blind plugs to unused cable connection gland(s) of the
equipment.
5. The cables indicated in Table 5.1 are used for wiring.
6. After completing the wiring, screw the cover in the terminal box body and secure it
with a lock screw.
Table 5.1 Cable Specifications
Terminal name of equipment
L, N,
AO+, AODO-1, DO-2
DI-1, DI-2, DI-C
Name
Power supply
Analog output
Contact output
Contact input
Need for shields
s
Note *: When the case is used for protective grounding, use a 2-wire cable.
Cable type
CVV
CVVS
CVV
CVV
Number of wires
2 or 3 *
2
2 to 8
3
T5.1E.EPS
Note
• Select an appropriate cable O.D. to match the cable gland size.
• Protective grounding should have the grounding resistance of 100V or less (JIS Class
3 ground).
• Special cable length is required for HART communication For detail of the HART
communication refer to IM11M12A01-51E HART Protocol Section 1.1.2 Communication line Requirement.
IM 11M12A01-05E
5-1
5.1.1
Terminals for the External Wiring
Remove the terminal cover on the opposite side of the display to gain access to the
external wiring terminals.
1
DI
2
C
FG + AO-
DO 1
DO 2
L
G FG
N
F5.1E.EPS
Figure 5.1 Terminals for External Wiring
5.1.2
Wiring
Make the following wiring for the equipment. It requires a maximum of four wiring
connections as shown below.
(1) Analog output signal
(2) Power and ground
(3) Contact output
(4) Contact input
Contact input 1
Contact output 1
Contact output 2
Contact input 2
1
DI-1
2
DI-2
3
DI-C
4
DO-1
5
DO-1
6
DO-2
7
DO-2
8
FG
9
AO
(+)
10
AO
(-)
11
L
12
N
13
G
14
FG
Analog output
4-20 mA DC
Digital output
100 to 240 V AC,
50 or 60 Hz
The protective grounding for the analyzer shall be connected either the protective
ground terminal in the equipment or the ground terminal on the case.
Standard regarding grounding: Ground to earth, ground resistance: 100V or less.
F5.2E.EPS
Figure 5.2 Wiring Connection
5-2
IM 11M12A01-05E
5. Wiring
5.1.3
Mounting of Cable Gland
For each wiring inlet connection of the equipment, mount the conduit appropriate for the
screw size or a cable gland.
25
Rc1/4 or 1/4NPT
(Reference air inlet)
Cable gland
Rc1/4 or 1/4NPT
(Calibration gas inlet)
4-G1/2, 1/2 NPT or the like
(Wiring connection)
F5.3E.EPS
Figure 5.3 Cable Gland Mounting
IM 11M12A01-05E
5-3
5.2 Wiring for Analog Output
This wiring is for transmitting 4 to 20 mA DC output signals to a device, e.g. recorder.
Maintain the load resistance including the wiring resistance of 550V or less.
Analyzer
Receiver
+
-
AO(+)
AO(-)
Shielded cables
FG
F5.4E.EPS
Figure 5.4 Wiring for Analog Output
5.2.1
Cable Specifications
Use a 2-core shielded cable for wiring.
5.2.2
Wiring Procedure
(1) M4 screws are used for the terminals. Use crimp-on terminals appropriate for M4
terminal screws for cable connections. Ensure that the cable shield is connected to
the FG terminal of the equipment.
(2) Be sure to connect (+) and (2) polarities correctly.
CAUTION
• Before opening the detector cover, loosen the lock screw. If the screw is not loosened
first, the screw will damage the cover and the terminal box will require replacement.
When opening and closing the cover, remove any sand particles or dust to avoid
gouging the thread.
• After screwing the cover on the equipment body, secure it with the lock screw.
5-4
IM 11M12A01-05E
5. Wiring
5.3 Wiring Power and Ground Terminals
Wiring for supplying power to the analyzer and grounding the equipment.
Ground
1
Grounding to the ground terminal
on the equipment case
Equipment case
Grounding
terminal
Lock washer
DI
2
C
FG + AO-
Crimp contact of
the grounding line
DO 1
DO 2
L
G FG
N
Jumper plate
~
100~240 V AC
50/60 Hz
F5.5E.EPS
Figure 5.5 Power and Grounding Wiring
5.3.1
Wiring for Power Line
Connect the power wiring to the L and N terminals of the equipment. For a three-core
cable, ground one core appropriately. Proceed as follows:
(1) Use a two-core or three-core shielded cable.
(2) M4 screws are used for the terminals. Use crimp-on terminals appropriate for M4
terminal screws for cable connections.
5.3.2
Wiring for Ground Terminals
The ground wiring of the analyzer should be connected to either the ground terminal of
the equipment case or the terminal inside of the equipment. Proceed as follows:
(1) Keep the ground resistance of 100V or less (JIS Class D grounding).
(2) When connecting the ground wiring to the ground terminal of the equipment case, be
sure that the lock washer is in contact with the case surface (see Figure 5.5.).
(3) Ensure that the jumper plate is connected between the G terminal and the FG
terminal of the equipment.
(4) The size of external ground screw thread is M4. Each cable should be terminated
corresponding crimp-on terminals.
IM 11M12A01-05E
5-5
5.4 Wiring for Contact Output
The equipment can output a maximum of two contact signals. These contact outputs can
be used for different applications such as a low-limit alarm or high-limit alarm.
Do the contact output wiring according to the following requirements.
Analyzer
DO-1
DO-1
DO-2
DO-2
Terminal box
Annunciator or the like
#1 Output
#2 Output
F5.6E.EPS
Figure 5.6 Contact Output Wiring
5.4.1
Cable Specifications
The number of wires in cable varies depending on the number of contacts used.
5.4.2
Wiring Procedure
(1) M4 screws are used for the terminals. Use crimp-on terminals appropriate for M4
terminal screws for cable connections.
(2) The contact output relays are rated 30 V DC 3 A, 250 V AC 3 A. Connect a load
(e.g. pilot lamp and annunciator) within these limits.
5-6
IM 11M12A01-05E
5. Wiring
5.5 Wiring for Contact Input
The converter can execute specified function when receiving contact signals.
To use these contact signals, proceed wiring as follows:
Converter
Terminal box
DI-1
Contact input 1
DI-2
DI-C
Contact input 2
F5.7E.EPS
Figure 5.14 Contact Input Wiring
5.5.1
Cable Specifications
Use a 2-wire or 3-wire cable for this wiring. Depending on the number of input(s),
determine which cable to use.
5.5.2
Wiring Procedure
(1) M4 screws are used for the terminals of the converter. Each wire in the cable should
be terminated in the corresponding crimp-on terminal.
(2) The ON/OFF level of this contact input is identified by the resistance. Connect a
contact input that satisfies the descriptions in Table 5.2.
Table 5.2 Identification of Contact Input ON/OFF
Closed
Resistance
200 V or less
Open
100 kV or more
T5.2E.EPS
IM 11M12A01-05E
5-7
6. Components
6. Components
This chapter describes the names and functions of components for the major equipment
of the EXAxt ZR Integrated type Zirconia High-temperature Humidity Analyzer.
6.1 ZR202G High-temperature Humidity Analyzer
6.1.1
Integrated-type High-temperature Humidity Analyzer
Terminal box,
Non explosion-proof
JIS C0920 / equivalent to IP44D.
Equivalent to NEMA 4X/IP66
(Achieved when the cable entry is
completely sealed with a cable
gland in the recirculation pressure
compensated version.)
Probe
this part is inserted in the process.
Select length from 0.4,
0.7, 1.0, 1.5, 2.0, 2.5 or 3.0 m.
Contact
Flange
used to mount the detector.
Selectable from JIS or ANSI
standard models.
Calibration gas
pipe opening
Metal O-ring
Pipe support
U-shaped pipe
Bolt
Probe
Screw
Sensor (cell)
Filter
F6.1E.EPS
Washer (or plain washer)
Figure 6.1 Integrated-type High-temperature Humidity Analyzer
IM 11M12A01-05E
6-1
6.2 ZA8F Flow Setting Unit and ZR20H Automatic Calibration Unit
Reference gas flow
setting valve
Span gas flow
setting valve
Zero gas flow
setting valve
Flowmeter for
reference gas
Flowmeter for
calibration gas
F6.2E.EPS
Figure 6.2 ZA8F Flow Setting Unit
Flowmeter for
Span gas
Horizontal
mounting
SPAN IN
REF IN
Flowmeter for
Reference gas
ZERO IN
Span gas flow
setting valve
Flowmeter for
Zero gas
SPAN IN
Reference gas flow
setting valve
REF IN
Zero gas flow
setting valve
Vertical
mounting
ZERO IN
F6.3E.EPS
Figure 6.3 ZR20H Automatic Calibration Unit
6-2
IM 11M12A01-05E
7. Startup
7. Startup
The following describes the minimum operating requirements — from supplying power
to the converter to analog output confirmation to manual calibration.
Check piping and
wiring connections
Set output ranges
Set up valves
Check current loop
Supply power
Check contact action
Confirm converter
type setting
Calibrate analyzer
Select gas to be measured
Set detailed data
Place in normal operation
F7.0E.EPS
Figure 7.1 Startup Procedure
System tuning by the HART communicator, refer to IM 11M12A01-51E ''HART
Communication Protocol''.
IM 11M12A01-05E
7-1
7.1 Checking Piping and Wiring Connections
Refer to Chapters 4 and 5, earlier in this manual, for piping and wiring confirmations.
7.2 Valve Setup
Set up valves and associated components used in the analyzer system as follows procedures:
(1) If a stop valve is used in the detector’s calibration-gas inlet, fully close this valve.
(2) If instrument air is used as the reference gas, adjust the air-set secondary pressure so
that an air pressure of measured gas pressure plus approx. 50 kPa (or measured gas
pressure plus apporox. 150 kPa when a check valve is used, maximum pressure
ration is 300 kPa) is obtained. Turn the reference-gas flow setting valve in the flow
setting unit to obtain a flow of 800 to 1000 ml/min. (Turning the valve shaft counterclockwise increases the rate of flow. Before turning the valve shaft, if the valve has a
lock nut, first loosen the lock nut.) After completing the valve setup, be sure to
tighten the lock nut.
Note
The calibration-gas flow setting is described later. Fully close the needle valve in the
flow setting unit.
7.3 Supplying Power to Converter
CAUTION
To avoid temperature changes around the sensor, it is recommended that (rather than
turning it on and off) the power be continuously supplied to the Humidity Analyzer if it
is used in an application where it is used periodically.
It is also recommended to flow a span gas (instrument air) beforehand.
Supply power to the converter. A display as in Figure 7.1, which indicates the detector’s
sensor temperature, then appears. As the heat in the sensor increases, the temperature
gradually rises to 7508 C. This takes about 20 minutes after the power is turned on,
depending somewhat on the ambient temperature and the measured gas temperature.
After the sensor temperature has stabilized at 7508 C, the converter is in measurement
mode. The display panel then displays the oxygen concentration as in Figure 7.2. This is
called the basic panel display.
%
F7.1E.EPS
Figure 7.1 Display of Sensor Temperature
During Warmup
7-2
F7.2E.EPS
Figure 7.2 Measurement
Mode Display
IM 11M12A01-05E
7. Startup
7.4 Operation of Infrared Switch
7.4.1
Display and Switches
This equipment uses an infrared switch that enables operation with the cover closed.
Figure 7.3 shows the infrared switch and the display. Table 7.1 shows the three switch
(keys) and functions. Figure 7.3 shows the infrared switch and the display.
4: Decimal
point
1: Data display
area
>
>
MmNkgalbbl %
scftm3 /d /s /h /m
ENT
3: Engineering-unit
display area
F7.3E.EPS
2: Infrared switch
Figure 7.3 Infrared switch and the display
1. Data display area: Displays the humidity, set values, alarm numbers, and error
numbers.
2. Infrared switch: Three switches perform data setting operations.
3. Engineering-unit display area: the percent sign appears when the humidity is displayed.
4. Decimal point: A decimal point is displayed.
Table 7.1 Switch and Function
Switch
`
`
ENT
Function
1. Moves the position of the digit to the right. If you continuously touch the key,
the position of the digit will move continuously to the right, finally returning
to the leftmost position after reaching the rightmost position of the digit.
2. Selects Yes or No.
3. When you touch this key together with the [ENT] key, the previous display
then appears, or the operation will be cancelled.
Used to change values. If you continuously touch this key, the value of the digit
will increase continuously, e.g., from 1 to 2 to 3 (for numeric data), or from A to
B to C (for alphabetic characters), and finally return to its original value.
1. Used to change the basic panel display to the parameter selection display.
2. Used to enter data.
3. Advances the operation.
T7.1E.EPS
The three infrared switches are activated by completely touching the glass surface of the
switch. To touch any of the keys continuously, first touch the surface and then completely remove your finger from the surface. Then touch it again.
Infrared switches consist of two elements: an infrared emitting element and an infrared
receive element. Infrared light-waves from the element bounce on the operator’s finger
and are reflected back to the receive element, thereby causing the infrared switch to turn
on and off, depending on the strength of the reflected light-waves. From these operating
principles, carefully observe the following:
IM 11M12A01-05E
7-3
CAUTION
1. Be sure to put the equipment case cover back on. If this is not done, the infrared
switch will not reflect the infrared light-waves, and a “dSPErr” error will be issued.
2. Before placing the equipment in operation, be sure to wipe off any moisture or dust
on the glass surface if it is wet or dirty. Also make sure your fingers are clean and dry
before touching the glass surface of the switch.
3. If the infrared switches are exposed to direct sunlight, they may not operate correctly.
In such a case, change position of the display or install a sun cover.
7-4
IM 11M12A01-05E
7. Startup
7.4.2
Display Configuration
The parameter codes provided for the equipment are used to control the equipment
display panels (see below). By selecting appropriate parameter codes, you can conduct
calibration and set operation parameters. Figure 7.4 shows the configuration of display
items. The parameter codes are listed in groups of seven; which are briefly described in
Table 7.2.
To enter parameters, you first need to enter the password.
Touch the [ >] key and [ ENT ] key at same time to revert to the main screen.
Basic panel display
%
Password entry display
Group A setup display
Group B setup display
Group C setup display
Group D setup display
Parameter code
selection display
Group E setup display
Group F setup display
Group G setup display
F7.4E.EPS
Figure 7.4 Display Configuration
Table 7.2 Display Functions
Display
Basic panel
Password entry
Group A setup
Group B setup
Group C setup
Group D setup
Group E setup
Group F setup
Group G setup
Function and item to be set
Displays the oxygen concentration in normal operation, or displays the detector
heater temperature while warming up. If an error or alarm arises,
the corresponding error or alarm number appears.
Enters the password for the parameter code selection display.
Displays detailed data, such as the cell voltage or temperature.
Sets and performs calibration and blowback.
Sets analog output.
Sets an alarm.
Sets the input and output contacts.
Selects the type of equipment and sets the parameters for computation.
Performs the current-loop or contact checks.
T7.2E.EPS
IM 11M12A01-05E
7-5
7.4.3
Entering Parameter Code Selection Display
This section briefly describes the password entry procedure for entering the parameter
code selection display. The password is 1102 - it cannot be changed to a different
password.
Switch operation
Continuously touch the [ENT] key for at least three seconds
0000
Touch the [ENT] key again. This allows you to change the leftmost
1000
Set the password 1102. If you touch the [ ] key, the digit that is flashing
1000
Touch the [>] key to move the position of the digit that is flashing to the
ENT
1100
Touch the [ ] key to change the numeric value to 1.
.
ENT
1100
Touch the [>] key again to move the position of the digit that is flashing
ENT
ENT
digit that is flashing.
.
ENT
to display "PASSno."
will be 1.
right one digit.
.
.
PASSno
.
.
ENT
.
.
Warm-up is complete, and the basic panel is now displayed.
.
.
21.0%
.
.
ENT
.
.
Description
.
.
Display
to the right one more digit. Continuously touch the [>] key, and the position
of the digit that is flashing will move continuously to the right.
1102
If you touch the [ENT] key, all the digits flash.
ENT
A01
Touch the [ENT] key again to display A01 on the parameter-code selection
display.
ENT
.
The symbol [
ENT
.
.
Touch the [ ] key to change the numeric value to 2. Continuously touch
.
.
1102
.
.
[>] key, and the numeric value increases continuously
] indicates that the key is being touched.
T7.4.3E.EPS
Light characters indicates that the digits are flashing.
CAUTION
• If no key is touched for at least 20 seconds during password entry, the current display
will automatically switch to the basic panel display.
• If no key is touched for at least 10 minutes during parameter code selection, the
current display will automatically switch to the basic panel display.
7-6
IM 11M12A01-05E
7. Startup
7.4.4
Selecting Parameter Codes
Table Parameter Code Selection
Switch operation
A01
Touch the [>] key again to return the position of the digit that is flashing to A. Continuously
touch the [>] key, and the position of the digit that is flashing will move continuously to the
right.
b01
If you touch the [ ] key once, character A will change to B.
C01
Touch the [ ] key once to change to C.
d01
Continuously touch the [>] key, and the value of the digit that is flashing will increase
continuously, from D to E to F to G to A. Numeric values will change from 0 to 1 to 2 to 3 …
to 8 to 9 and back to 0. However, numbers that are not present in the parameter codes, will be
skipped. Each digit is changed independently. Even though a low-order digit changes from
9 to 0, a high-order digit will not be carried.
Set Value
After you select the desired character, touch the [ENT] key. The set data will be displayed.
ENT
ENT
ENT
ENT
ENT
.
.
.
.
The symbol [
IM 11M12A01-05E
.
.
.
Touch the [>] key again to move the position of the digit that is flashing to the right one m
ore digit. This enables you to change numeric character 1.
ENT
.
A01
.
.
If you touch the [>] key once, the position of the digit that is flashing will move to the right.
This allows you to change 0.
.
A01
ENT
.
Password has been entered and the parameter code selection display has appeared.
Character A is flashing, indicating that character A can be changed.
.
A01
.
ENT
.
.
Description
.
.
Display
] indicates that the key is being touched. Light characters indicate that the digits are flashing.
T7.4.4EEPS
7-7
7.4.5
Changing Set Values
(1) Selecting numeric values from among preset values
Switch operation
.
.
ENT
Display
Description
0
The set value is displayed after the parameter code selection. An example of how to
select either 0, 1, or 2 as the set value is given below.
(The currently set value is 0.)
ENT
2
Touch the [ ] key again to change to the numeric value 2.
ENT
0
If you touch the [ ] key again, the numeric value will return to 0.
.
C01
.
ENT
.
Touch the [ ] key once to change the current value from 0 to 1.
.
.
1
.
.
ENT
.
.
.
.
Continuously touch the key, and the numeric values will change continuously.
Display the desired numeric value and touch the [ENT] key.
The display will then return to the parameter code selection
T7.4.5.1E.EPS
(2) Entering numeric values for the humidity and factors
Switch operation
.
.
.
.
ENT
ENT
Display
Description
00.0
The set value is displayed after the parameter code selection.
00.0
Touch the [>] key to move the position of the digit that is flashing to the
An example of entering "9.8" is given below. (The currently set value is 0.0)
digit to be changed.
Continuously touch the [>] key, and the position of the digit that is flashing
will move continuously to the right.
09.8
Touch the [ ] key to set the numeric value 8.
09.8
After the numeric value appears, touch the [ENT] key.
09.8
If you touch the [ENT] key again, the flashing stops and the current set value
will be in effect.
C11
Touch the [ENT] key once again to return to the parameter code selection display.
.
ENT
ENT
ENT
.
.
.
ENT
.
.
.
Touch the [>] key to move the position of the digit that is flashing to the right.
.
09.0
ENT
.
Touch the [ ] key to set the numeric value 9.
Continuously touch the [ ] key, and the numeric value will change in sequence
from 0 to 1 to 2 to 3 … to 8 to 9 and back to 0.
.
09.0
.
ENT
.
.
.
.
T7.4.5.2E.EPS
7-8
IM 11M12A01-05E
7. Startup
(3) If invalid numeric values are entered:
98.0
ENT
Err
.
.
ENT
.
.
.
.
ENT
00.0
If an invalid numeric value (beyond the input range specified) is entered,
"ERR" will appear for two seconds after touching the [ENT] key.
"ERR" appears for two seconds, and the display returns to the first set value.
Re-enter the numeric value.
T7.4.5.3E.EPS
IM 11M12A01-05E
7-9
7.5 Confirmation of Equipment Type Setting
This equipment can be used for both the Oxygen Analyzer and the Humidity Analyzer.
If you choose optional specification /HS at the time of purchase, the equipment is set for
the Humidity Analyzer.
Before setting the operating data, be sure to check that the desired model has been set.
Note that if the equipment type setting is changed after operating data are set, the
operating data that have been set are then initialized and the default settings remain. Set
the equipment type with parameter code F01. See Table 10.7, later in this manual.
CAUTION
Note that if the equipment type is changed, operation data that have already been set are
initialized (reverting to the default setting).
Table 7.3 Equipment Type Setting
Switch operation
A01
ENT
F01
Description
Display after the password has been entered.
Touch the [ ] key to switch to Group F. If an unwanted alphabetic character after
.
ENT
.
.
Display
.
.
F has been entered, continuously touch the [>] key to return to the original.
.
.
ENT
0
Touch the [ENT] key for confirmation. If 0 (zero) is entered, the oxygen analyzer
is already set. If 1 (one) is entered, the humidity analyzer has been set.
Change the setting following the steps below.
ENT
0
Continuously touch the [ ] key, and the position of the digit will change from 1 to 0 to
.
.
.
1 to 0. Release the [ENT] key when 0 is displayed.
Touch the [ENT] key. The numeric value will flash.
ENT
0
Touch the [ENT] key again to stop the numeric value from flashing.
ENT
.
.
0
.
.
ENT
.
.
.
.
ENT
F01
Basic
panel
display
Touch the [ENT] key once again, and the display will change to the parameter code.
Touch the [>] key together with the [ENT] key to return to the basic panel display.
(This is not required if you proceed to make another setting.) (The displayed numeric
charactores indicate the measurment gas concentration.)
T7.3E.EPS
The symbol [
7-10
] indicates that the corresponding keys are being touched, and the light characters indicate flashing.
IM 11M12A01-05E
7. Startup
7.6 Setting Display Item
Display items are those items that are displayed on the basic panel display. Parameter
code A00 or F08 is used to set the display items as shown in the table below. If the
humidity analyzer /HS option was specified at the time of purchase, the equipment is a
humidity analyzer. For other than the above, the equipment is set to oxygen concentration at the factory before shipment. If mix ratio is to be measured, change the existing
setting as follows.
Additionally, when humidity analyzer is selected in the Detector Type Setting in the
previous section, the display item will be humidity if data initialization is performed.
Table 7.4 Display Items
Values set with
A00 or F08
0
1
2
3
Items displayed on the basic panel display
Indicates the oxygen concentration.
Indicates the humidity.
Indicates the mix ratio.
Displays an item for the current output. If the output damping
has been set for the current output, values involving the output
damping are displayed.
T7.4.EPS
Table 7.5 Display Item Setting Procedure
.
.
ENT
.
ENT
.
ENT
.
.
ENT
.
.
ENT
.
.
ENT
ENT
.
.
.
ENT
ENT
.
.
Display
A01
A01
A00
0
2
2
2
Description
Display after the password has been entered.
Touch the [ .] key to move the position of the digit that is
flashing to the right.
Touch the [ ] key to change the parameter code to 0. The
.
.
. .
Switch operation
number will change from 1 to 2 to 3 9 and back to 0.
Touch the [ENT] key to display the current set value.
Set the mix ratio. Touch the [ENT] key to change the
number to 2.
Touch the [ENT] key. The number 2 will be flashing.
Touch the [ENT] key again to stop flashing.
A00
Touch the [ENT] key to return to the parameter code
0.000
Touch the [ .] and [ENT] keys simultaneously to return to
selection display.
the basic panel display on which the mix ratio appears.
The symbol (
) indicates that the corresponding keys are being touched, and the light
characters indicate flashing.
IM 11M12A01-05E
T7601.EPS
7-11
7.7 Current Output Setting
7.7.1
Analog Output Setting
Select any one of the analog output settings — oxygen, humidity, and mixing ratio. If
the /HS option was specified at the time of purchase, the equipment is a humidity
analyzer. For other than this setting, the analyzer is an oxygen analyzer. If mixed
measurement is required, change the existing output setting as follows. Use parameter
code C01 for the setting (see Table 7.6). When the humidity analyzer is specified in the
above setting for the type of detector, the analog output will be set to “humidity” if data
initialization is performed.
Table 7.5.1 Analog Output Setting Procedure
.
ENT
ENT
ENT
ENT
Display
Description
A01
Display after the password has been entered.
C01
Change the parameter code to C01.
0
The current set value, in this case, 0: oxygen concentration,
1
Touch the [
1
Touch the [ENT] key. The numeric value will be flashing.
1
Touch the [ENT] key again to stop flashing.
C01
is displayed.
.
.
.
.
.
.
.
ENT
.
.
ENT
.
.
ENT
.
.
.
Switch operation
] key to set the number 1 for humidity setting.
Touch the [ENT] key to return to the parameter code
selection display.
T7501.EPS
The symbol (
) indicates that the corresponding keys are being touched, and the light
characters indicate flashing.
7-12
IM 11M12A01-05E
7. Startup
7.7.2
Output Range Setting
This section describes how to set the analog output range.
(1) To provide an oxygen concentration, use parameter code C11 to set the minimum
oxygen concentration at 4 mA, and use parameter code C12 to set the maximum
oxygen concentration at 20 mA.
(2) To provide a humidity output, use parameter code C13 to set the minimum humidity
at 4 mA, and use parameter code C14 to set the maximum humidity at 20 mA.
(3) To provide a mix ratio, use parameter code C15 to set the minimum mix ratio at 4
mA, and use parameter code C14 to set the maximum mixing ratio at 20 mA.
Refer to Table 7.6 for the parameter codes. For more details, consult Section 8.1,“Current Output Settings,” later in this manual.
Table 7.6 Parameter codes for analog output range
Parameter code
C01
C11
C12
C13
C14
C15
C16
Set value
0 Oxygen concentration
1 Humidity
2 Mix ratio
Minimum oxygen concentration (at 4 mA)
Maximum oxygen concentration (at 20 mA)
Minimum humidity (at 4 mA)
Maximum humidity (at 20 mA)
Minimum mix ratio (at 4 mA)
Maximum mix ratio (at 20 mA)
T7.6.EPS
IM 11M12A01-05E
7-13
7.7.3
Minimum Current (4 mA) and Maximum Current (20 mA) Settings
This section describes how to set the humidity readings corresponding to 4 mA and 20
mA to 30% H2O and 80% H2O respectively.
ENT
ENT
Display
Description
A01
C01
Display after the password has been entered.
Set the humidity reading at 4 mA. Change the parameter
.
.
.
.
.
.
.
.
.
Touch the [
.
.
C13
ENT
000
Touch the [ENT] key to display the current set value. The
.
.
ENT
ENT
000
Touch the [ . ] key to move the position of the digit that is
.
.
Touch the [ .] key to move the position of the digit that is
ENT
030
Touch the [
.
.
C11
ENT
030
If you touch the [ENT] key, all the digits flash.
.
.
ENT
ENT
030
Touch the [ENT] key again to stop flashing.
.
.
Touch the [
ENT
C13
Touch the [ENT] key to return to the parameter code
.
.
C11
ENT
C13
Set the humidity reading at 20 mA. Touch the [ . ] key to move
.
.
ENT
ENT
C14
Touch the [
.
.
Touch the [ .] key to move the position of the digit that is
ENT
025
Touch the [ENT] key to display the current set value.
.
.
C01
ENT
025
Touch the [ . ] key to move the position of the digit that is
.
.
] key to switch to Group C.
ENT
ENT
085
Touch the [
.
.
ENT
085
Touch the [ .] key to move the position of the digit that is
.
code to C13. Touch the [
.
.
. .
Switch operation
.
ENT
080
Touch the [
.
flashing to the right.
] key to enter the number 1.
.
flashing to the right.
] key to enter the number 3.
humidity 0% H20 is now being displayed.
.
flashing to the right.
] key to enter the number 3.
selection display.
.
the position of the digit that is flashing to the right.
] key to change the number 3 in C13 to "4."
flashing to the right.
.
] key to change the number 2 in C25 to "8."
.
flashing to the right.
] key to change the number 5 in C85 to "0." The
.
.
.
ENT
080
If you touch the [ENT] key, all the digits flash.
.
.
ENT
080
Touch the [ENT] key again to stop flashing.
.
number changes from 5 to 6 . to 9 to 0.
ENT
C14
If you touch the [ENT] key again, the parameter code
.
.
selection display will appear.
ENT
Basic
Touch the [ . ] key together with the [ENT] key to return to the
panel
basic panel display. (This is not required if you proceed to
display
make another setting.)
(The displayed numeric characters indicate the humidity of
the measurement gas.)
The symbol (
) indicates that the corresponding keys are being touched, and the light
characters indicate flashing.
7-14
T7701.EPS
IM 11M12A01-05E
7. Startup
7.8 Checking Current Loop
The set current can be output as an analog output. This enables the checking of wiring
between the converter and the receiving instrument. Current loop checking is performed
using parameter code G01.
Table 7.7 Checking Current Loop
.
ENT
.
ENT
.
ENT
.
ENT
>
.
ENT
>
ENT
>
>
>
>
Description
A01
G01
Display after the password has been entered.
00.0
Touch the [ENT] key. The output current remains preset
with the output-hold feature (Section 2.3).
10.0
Touch the [ ] key to set the numeric value 1 (to set a 10-mA output).
10.0
Touch the [ENT] key to have all the digits flash.
10.0
Touch the [ENT] key again to stop the flashing.
A 10-mA output is then issued.
G01
Touch the [ENT] key once again to switch
to the parameter code selection display.
At that point, the output current returns to the normal value.
Basic
panel
display
Touch the [>] key together with the [ENT] key
to return to the basic panel display.
Touch the [ ] key to switch to Group G.
.
.
ENT
>
Display
.
.
ENT
.
Switch operation
>
T7.7E.EPS
The symbol [
IM 11M12A01-05E
] indicates that the corresponding keys are being touched, and the light characters indicate flashing.
7-15
7.9 Checking Contact I/O
Conduct a contact input and output check as well as an operation check of the solenoid
valves for the optional automatic calibration unit.
Table 7.8 Parameter Codes for Checking Contact I/O
Check item
Contact output 1
Contact output 2
Parameter code
G11
G12
Automatic calibration solenoid valve
(zero gas)
G15
Automatic calibration solenoid valve
(span gas)
G16
Contact input 1
G21
Contact input 2
G22
Set value and
contact action
0
Open
1
Closed
0
Open
1
Closed
0
Off
1
On
0
Off
1
On
0
Open
1
Closed
0
Open
1
Closed
T7.8E.EPS
7-16
IM 11M12A01-05E
7. Startup
7.9.1
Contact Output Check
Follow Table 7.9 to check the contact output. The table uses an example with contact
output 1.
Table 7.9 Checking Contact Output
>
The symbol [
.
>
.
>
.
>
.
ENT
ENT
ENT
ENT
ENT
G11
Touch the [ENT] key once again to switch to the parameter code selection display.
The contact then returns to the original state.
ENT
Basic
panel
display
Touch the [>] key together with the [ENT] key to return to the basic panel display.
(This is not required if you proceed to make another setting.)
(The displayed numeric characters indicate the measurement gas concentration.)
Display after the password has been entered.
.
Touch the [ ] key to switch to Group F.
Touch the [>] key to move the position of the digit that
is flashing to the right one digit.
G11
Touch the [ ] key to enter 1.
.
G01
0
Touch the [ENT] key to have 0 flash. The contact is then open.
1
Touch the [ ] key to set 1 (one).
1
Touch the [ENT] key. The flashing continues.
1
Touch the [ENT] key again to stop the flashing, and the
contact will be closed.
.
>
ENT
.
>
ENT
.
>
ENT
.
>
ENT
.
>
A01
G01
Description
.
>
Display
.
Switch operation
] indicates that the corresponding keys are being touched, and the light characters indicate flashing.
T7.9E.EPS
WARNING
• If you conduct an open-close check for the contact output 2, Error 1 (cell voltage
failure) or Error 2 (heater temperature abnormal) will occur. This is because the builtin heater power of the detector, which is connected to contact output 2, is turned off
during the above check. So, if the above error occurs, reset the equipment or turn the
power off and then back on to restart (refer to Section 10.4, “Reset,” later in this
manual).
IM 11M12A01-05E
7-17
7.9.2
Checking Calibration Contact Output
The calibration contacts are used for the solenoid valve drive signals for the Automatic
Calibration Unit. This output signal enables you to check the equipment operation.
Check the flowmeter gas flow for that operation.
Follow the steps in Table 7.10. The table uses an example with a zero-gas solenoid
valve.
Table 7.10 Checking Calibration Contact Output
>
The symbol [
7-18
Touch the [ ] key to enter 5.
.
>
G15
.
>
Touch the [>] key to move the position of the digit
that is flashing to the right one digit.
.
>
G11
.
ENT
ENT
ENT
ENT
ENT
ENT
ENT
G15
Touch the [ENT] key once again to switch to the parameter code
selection display.
The solenoid valve will then be closed.
ENT
Basic
panel
display
Touch the [>] key together with the [ENT] key to return to the
basic panel display.
(This is not required if you proceed to make another setting.)
(The displayed numeric characters indicate the measurement
gas concentration.)
.
.
.
Touch the [ ] key to switch to Group G.
0
Touch the [ENT] key to have 0 flash.
The solenoid valve remains closed.
1
Touch the [ ] key to enter 1.
1
Touch the [ENT] key. The flashing continues.
1
Touch the [ENT] key again to stop the flashing,
and the solenoid valve will be open to let the calibration gas flow.
.
>
Touch the [ ] key to enter 1.
.
>
G11
ENT
.
>
Touch the [>] key to move the position of the digit
that is flashing to the right one digit.
ENT
.
>
G01
ENT
.
>
Display after the password has been entered.
.
>
A01
G01
ENT
.
>
Description
.
>
Display
.
Switch operation
] indicates that the corresponding keys are being touched, and the light characters indicate flashing.
T7.10E.EPS
IM 11M12A01-05E
7. Startup
7.9.3
Checking Input Contacts
Follow Table 7.11 to check the input contacts. The table uses an example with input
contact 1.
Table 7.11 Checking Input Contacts
.
ENT
>
.
ENT
>
.
ENT
>
.
ENT
>
ENT
Description
A01
G01
Display after the password has been entered.
G01
Touch the [>] key to move the position of the digit
that is flashing to the right one digit.
G21
Touch the [ ] key to enter 2.
0
G21
Touch the [ ] key to switch to Group G.
.
>
>
Display
.
.
ENT
.
Switch operation
Touch the [ENT] key. 0 is displayed with the contact open.
If the contact is closed, the display will be 1 (one).
This enables you to check whether or not the wiring
connections have been properly made or not.
Touch the [>] key together with the [ENT] key to return to
the basic panel display.
T7.11E.EPS
The symbol [
IM 11M12A01-05E
] indicates that the corresponding keys are being touched, and the light characters indicate flashing.
7-19
7.10 Calibration
The converter is calibrated in such a way that the actual zero and span gases are measured and those measured values are used to agree with the oxygen concentrations in the
respective gases.
There are three types of calibration procedures available:
(1) Manual calibration conducting zero and span calibrations, or either of these calibrations in turn.
(2) Semi-automatic calibration which uses the infrared switches or a contact input signal
and conducts calibration operations based on a preset calibration time and stable
time.
(3) Automatic calibration conducted at preset intervals.
Manual calibration needs the ZA8F Flow Setting Unit to allow manual supply of the
calibration gases. Semi-automatic and automatic calibrations need the Automatic
Calibration Unit to allow automatic supply of the calibration gases. The following
sections set forth the manual calibration procedures. For details on semi-automatic and
automatic calibrations, consult Chapter 9, “Calibration,” later in this manual
7.10.1 Calibration Setup
Set the following three items before carrying out a calibration. Parameter codes for these
set items are listed in Table 7.12.
(1) Mode setting
There are three calibration modes: manual, semi-automatic, and automatic.
Select the desired mode. This section uses manual mode for calibration.
(2) Oxygen concentration in zero gas
Enter the zero-gas oxygen concentration for calibration.
(3) Oxygen concentration in span gas
Enter the span-gas oxygen concentration for calibration. If instrument air is used,
enter 21 vol% O2. When using the ZO21S Standard Gas Unit (for use of the atmospheric air as a span gas), use a hand-held oxygen analyzer to measure the actual
oxygen concentration, and then enter it.
CAUTION
If instrument air is used for the span gas, dehumidify the air to a dew point of -208 C and
remove any oil mist or dust.
Incomplete dehumidifying or unclean air will have an adverse effect on the measurement
accuracy.
Table 7.12 Calibration Parameter Codes
Set item
Parameter code
Set value
0: Manual calibration
Mode
B03
1: Semi-automatic calibration
2: Automatic calibration
Zero-gas oxygen
concentration
Span-gas oxygen
concentration
B01
Enter oxygen concentration.
B02
Enter oxygen concentration.
T7.12E.EPS
7-20
IM 11M12A01-05E
7. Startup
Table 7.13 Calibration Setup Procedure
.
>
.
>
.
>
.
001.00 %
Touch the [>] key to move the position of the digit that is flashing to 1.
ENT
000.00 %
Touch the [ ] key to change to 0.
ENT
000.00 %
Touch the [>] key to move the position of the digit that
is flashing to the right one digit.
ENT
000.90 %
Touch the [ ] key to change the numeric value to 9.
ENT
000.90 %
Touch the [>] key to move the position of the digit that
is flashing to the right one digit.
ENT
000.98 %
Touch the [ ] key to change the numeric value to 8.
ENT
000.98 %
Touch the [ENT] key to have all the digits flash.
ENT
000.98 %
Touch the [ENT] key again to stop the flashing.
ENT
b01
.
.
Set the zero-gas concentration. Switch the parameter code to B01.
Here, set 0.98%.
.
>
ENT
.
>
Touch the [ENT] key to display the currently set value.
.
>
001.00 %
.
>
ENT
.
>
ENT
.
>
A01
b01
ENT
.
>
Description
Display after the password has been entered.
.
>
Display
.
Switch operation
>
Touch the [ENT] key once again to switch to the
parameter code selection display.
Set the span-gas concentration by above procedure, set 21 % to B02.
The symbol [
IM 11M12A01-05E
.
>
.
>
0
Touch the [ENT] key to display the currently set value.
If it is 0, you can leave it as is. If it is other than 0, change it to 0 (zero).
.
>
ENT
ENT
0
Touch the [ENT] key. The numeric value will flash.
.
>
b03
ENT
0
Touch the [ENT] key again to stop the flashing.
.
>
Next, set the calibration mode. Switch the parameter code to B03.
ENT
ENT
b03
Touch the [ENT] key once again to switch to the parameter code selection display.
.
>
ENT
Basic
panel
display
Touch the [>] key together with the [ENT] key to return to the basic panel display.
(This is not required if you proceed to make another setting.)
(The displayed numeric characters indicate the measurement gas concentration.)
] indicates that the corresponding keys are being touched, and the light characters indicate flashing.
T7.13E.EPS
7-21
7.10.2 Manual Calibration
The following describes how to perform a calibration.
7.10.2.1
7-22
Preliminary
Before performing a manual calibration, be sure that the ZA8F Flow Setting Unit zerogas flow valve is fully closed. Open the zero-gas cylinder pressure regulator so that the
secondary pressure equals measured gas plus approx. 50 kPa (or measured gas pressure
plus approx. 150 kPa when a check valve is used, maximum pressure rating is 300 kPa.).
IM 11M12A01-05E
7. Startup
7.10.2.2
Performing Calibration
This manual assumes that the instrument air is the same as the reference gas used for the
span gas. Follow the steps below to conduct manual calibration. When using the ZO21S
Standard Gas Unit (for use of the atmospheric air as a span gas), use a hand-held oxygen
analyzer to measure the actual oxygen concentration, and then enter it.
Table 7.14 Performing Calibration
Switch operation
.
.
.
ENT
.
ENT
.
ENT
.
ENT
>
.
ENT
>
ENT
ENT
>
>
>
>
>
>
Display
Description
A01
b10
Display after the password has been entered.
CAL
Touch the [ENT] key, and CAL will be displayed.
[Cancel] Touch the [>] key and [ENT] key together to return to the B10 display.
CAL
If you touch the [ENT] key again, "CAL" then flashes.
[Cancel] If you touch the [>] key and [ENT] key together,
the display will return to the B10 display.
Switch the parameter code to B01.
(The key operations for this procedure are omitted.)
SPAn Y
If you touch the [ENT] key again, "SPAn Y" appears (Y is flashing).
If you omit the span calibration, touch the [>] key, and change "Y" to "N."
If you touch the [ENT] key, the display then jumps to "ZERO Y."
21.00 %
Touch the [ENT] key to display the calibration-gas value, in other words,
the span-gas concentration set in Section 7.10.1, "Calibration Setup."
To cancel the above, touch the [>] key and [ENT] key together.
Then the display returns to "SPAN Y."
OPEn
/20.84
If you touch the [ENT] key, "OPEN" and the currently measured value
are displayed alternately. Open the Flow Setting Unit span-gas flow valve and adjust
the span-gas flow to 600 6 60 ml/min. To do this, loosen the valve lock nut
and gently turn the valve control (shaft) counterclockwise.
Check the calibration gas flowmeter for confirmation.
If the automatic calibration unit is connected, open the span—gas solenoid valve,
and the measured value changes to the span-gas value.
When the display becomes stable, proceed to the next step.
To cancel the above, touch the [>] key and [ENT] key together.
Then the display returns to "SPAN Y."
20.84 %
If you touch the [ENT] key, all the digits flash. At that point, no calibration
is conducted yet.
ZEro Y
If you touch the [ENT] key again, the flashing stops and "Zero Y" appears.
Close the span-gas flow valve. Secure the span-gas lock nut for leakage.
If the automatic calibration unit is connected, close the span-gas solenoid valve.
If zero-gas calibration is omitted, touch the [>] key to change Y to N.
Next, if you touch the [ENT] key, the display jumps to "CALEND."
.
ENT
.
>
ENT
.
>
ENT
0.98 %
Touch the [ENT] key to display the calibration gas value.
This value must be the zero-gas concentration set in Section 7.10.1,
"Calibration Setup," earlier in this manual.
To cancel the above, touch the [>] key and [ENT] key together.
Then the display returns to "ZERO Y."
The symbol [
IM 11M12A01-05E
] indicates that the corresponding keys are being touched, and the light characters indicate flashing.
T7.14E-1.EPS
7-23
Table 7.14 Performing Calibration (Continued)
>
.
>
.
>
ENT
ENT
.
>
Description
ENT
CALEnd
Touch the [ENT] key again to get the measured value to agree
with the zero-gas concentration. Close the zero-gas flow valve.
Secure the valve lock nut for leakage during measurement.
If the automatic calibration unit is connected, close the span—gas solenoid valve.
"CALEND" flashes during the output hold time. If "output hold" is specified
in the Output Hold setting," it remains as an analog output (see Section 8.2).
When the preset output hold time is up, the calibration is complete.
.
>
Display
ENT
b10
The output hold time is set to 10 minutes at the factory.
If you touch both the [>] key and [ENT] key at the same time during
the preset Output Hold Time, the calibration is aborted
and the parameter code selection display appears.
.
Switch operation
ENT
Basic
panel
display
If you touch the [>] key and [ENT] key together,
then the basic panel display appears.
OPEn
/0.89
0.89
If you touch the [ENT] key, "OPEN" and the currently measured value
are displayed alternately. Open the Flow Setting Unit zero-gas flow valve
and adjust the zero-gas flow to 600 6 60 ml/min. To do this,
loosen the valve lock nut and gently turn the valve control (shaft) counterclockwise.
Check the calibration gas flowmeter for confirmation. If the automatic calibration
unit is connected, open the zero—gas solenoid valve, and then the measured value
changes to the zero-gas value. When the display becomes stable,
proceed to the next step.
To cancel the above, touch the [>] key and [ENT] key together.
Then the display returns to "ZERO Y."
If you touch the [ENT] key, all the digits flash. At that point,
no calibration is conducted yet.
The above "display" is a result of switch operations.
The symbol [
] indicates the keys are being touched, and the light characters indicate "flashing."
"/" indicates that the characters are displayed alternately.
[Cancel] indicates the procedure to stop the key operations.
7-24
T7.14E-2.EPS
IM 11M12A01-05E
8. Detailed Data Setting
8. Detailed Data Setting
8.1 Current Output Setting
This section describes setting of the analog output range. Table 8.1 shows the parameter
codes for each setting item and set values.
Table 8.1 Display Items
Set item
Current output
Parameter code
C01
Output mode
C03
Min. oxygen concentration
Max. oxygen concentration
Min. humidity
Max. humidity
Min. mixing ratio
Max. mixing ratio
Output damping coefficient
C11
C12
C13
C14
C15
C16
C30
Set value
0: Oxygen concentration
1: Humidity
2: Mixing ratio
0: Linear
1: Logarithm
Oxygen concentration reading corresponding to 4 mA
Oxygen concentration reading corresponding to 20 mA
Humidity reading corresponding to 4 mA
Humidity reading corresponding to 20 mA
Mixing ratio at 4 mA
Mixing ratio at 20 mA
0 to 255 seconds
T8.1.1.EPS
CAUTION
When you select logarithmic mode in Section 8.1.3, “Output Mode,” later in this
manual, the oxygen concentration, humidity reading, and mixing ratio remain constant at
0.1% O2, 0.1% H2O and 0.01 kg/kg respectively.
IM 11M12A01-05E
8-1
8.1.1
Minimum and Maximum Settings Corresponding to 4 mA and 20 mA
Set the output items for oxygen concentration reading, humidity reading and mixing
ratio corresponding to 4 mA and 20 mA. When the oxygen concentration was selected
with parameter code C01, use parameter codes C11 and C12 for the minimum and
maximum settings; when the humidity setting was selected with parameter code C01,
use parameter codes C13 and C14 for those settings; and when the mix ratio setting was
selected with parameter code C01, use parameter codes C15 and C16 for those settings.
Oxygen concentration setting range
The minimum concentration of oxygen for the minimum current (4 mA) is 0% O2 or 6%
to 76% O2. The maximum concentration of oxygen for the maximum current (20 mA)
ranges from 5% to 100% O2, and must be at least 1.3 times the concentration of oxygen
set for the minimum.
Setting example 1
If the setting (for a 4 mA current) is 10% O2, you must set the oxygen concentration for
the maximum (20 mA) point at more than 13% O2.
Maximum oxygen concentration, % O2 (for a maximum current of 20 mA)
Setting example 2
If the setting (for a 4 mA current) is 75% O2, you must set the oxygen concentration for
the maximum (20 mA) point at 98% O2 or greater, (75 3 1.3% O2). (Numbers after the
decimal point are rounded up.)
95
85
Ranges over which oxygen
concentrations can be set
75
65
55
45
Outside ranges
35
25
15
5
5
15
25
35
45
55
65
75
Minimum oxygen concentration, % O2 (for a minimum current of 4 mA)
F8.1.1.1.EPS
Figure A Max. and Min. Oxygen Concentration Set Ranges
8-2
IM 11M12A01-05E
8. Detailed Data Setting
Humidity setting range
The minimum humidity is set to 0% H2O or ranges from 26 to 100% H2O. The maximum humidity ranges from 25% to 100% H2O, and must be greater than 0.8 times plus
23 the humidity set for the minimum.
Setting example 1
If the setting (for a 4 mA current) is 0% H2O, you must set the maximum (20 mA) point
at more than 25% H2O.
Setting example 2
If the setting (for a 4 mA current) is 26% H2O, you must set the maximum (20 mA)
point at more than 44% H2O, (26 3 0.8 + 23% H2O). (Numbers after the decimal point
are rounded up.)
Maximum humidity (for a 20-mA current), % H2O
95
85
Ranges over which oxygen
concentrations can be set
75
65
55
45
Outside ranges
35
25
15
5
5
15
25
35
45
55
Minimum humidity (for a 4-mA current), % H2O
65
75
F8.1.1.2.EPS
Figure B Max. and Min. Humidity Set Ranges
IM 11M12A01-05E
8-3
“Mix ratio” setting range
The minimum mix ratio is set to 0 kg/kg or ranges from 0.201 to 0.625 kg/kg. The
maximum mix ratio setting ranges from 0.2 to 1.0 kg/kg, and must be greater than 1.3
times plus 0.187 the mix ratio set for the minimum.
Setting example 1
If the setting (for a 4 mA current) is 0 kg/kg, you must set the maximum (20 mA) point
at more than 0.2 kg/kg.
Setting example 2
If the setting (for a 4 mA current) is 0.201 kg/kg, you must set the maximum (20 mA)
point at more than 0.449 kg/kg, (0.201 3 1.3 + 0.187 kg/kg). (Numbers after the
decimal point are rounded up.)
1
Ranges over which oxygen
concentrations can be set
0.95
Maximum mixing ratio, kg/kg at 20 mA
0.9
0.85
0.8
0.75
0.7
0.65
0.6
0.55
Outside ranges
0.5
0.45
0.4
0.201
0.25
0.3
0.35
0.4
0.45
0.5
0.55
0.6
0.65
Minimum mixing ratio, kg/kg at 4 mA
Figure C
8-4
Max. and Min. Mix Ratio Set Ranges
IM 11M12A01-05E
8. Detailed Data Setting
8.1.2
Entering Output Damping Constants
If a measured value which is adversely affected by rapid changes in the process is used
as the basis for control, frequent on-off actions of the output may result. To avoid this,
the analyzer allows the setting of output damping constants ranging from 0 to 255
seconds.
8.1.3
Selection of Output Mode
There are two output modes available: linear mode and logarithmic mode. Select the
either mode for your desired analog output vs. measured value characteristics.
CAUTION
• When you select logarithmic mode, the minimum output remains constant at 0.1% O2,
and the humidity remains set to 0.1% H2O and mixing ratio is set to 0.01 kg/kg,
regardless of the set values. Set value of C11 to C16 remains unchanged.
8.1.4
Default Values
When the analyzer is delivered or data are initialized, the output current settings are by
default as shown in Table 8.2.
Table 8.2 Output Current Default Values
Item
Min. oxygen concentration
Max. oxygen concentration
Minimum humidity
Maximum humidity
Minimum ratio setting
Maximum ratio setting
Output damping constant
Output mode
Default setting
0% O2
25% O2
0% H2O
25% H2O
0 kg/kg
0.2 kg/kg
0 (seconds)
Linear
T8.1.4.1E.EPS
IM 11M12A01-05E
8-5
8.2 Output Hold Setting
The “output hold” functions hold an analog output signal at a preset value during the
equipment´s warm-up time or calibration or if an error arises.
Table 8.3 shows the analog outputs that can be retained and the individual states.
Table 8.3 Current Output Parameter Codes
Equipment status
During warm-up
Output hold
values available
4 mA
20 mA
Without hold
feature
Retains output
from just before
occurrence
Set value
(2.4 to 21.6 mA)
Under calibration
On Error
occurrence
s
s
s
s : The output hold functions are available.
8.2.1
Under
maintenance
s
s
s
s
s
s
s
s
s
T8201E.EPS
Definition of Equipment Status
(1) Warming up
“Warming up” is the time required after applying power until the sensor temperature
stabilizes at 7508 C, and the equipment is in the measurement mode. This status is that
the sensor temperature is displayed on the basic panel.
(2) Under maintenance
“Under maintenance” is the time from when a valid password is entered in the basic
panel display to enable the parameter code selection display until the display goes back
to the basic panel display
(3) “Under calibration” (see Chapter 9, Calibration)
In the manual calibration, proceed with the calibration operation with the parameter code
B10 to display the span-gas confirmation display for the first span calibration, thus
starting the calibration time when the [ENT] key is touched. After a series of calibrations is complete and the preset output stabilization time has elapsed, the calibration
time will be up. Figure 8.1 shows the definition of “under calibration” in the manual
calibration.
8-6
IM 11M12A01-05E
8. Detailed Data Setting
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
ENT
ENT
>
>
ENT
ENT
>
>
ENT
ENT
>
>
ENT
ENT
>
>
ENT
ENT
>
>
ENT
ENT
>
>
ENT
>
Switch operations
ENT
Display
b10
CAL
CAL
SPAn Y
21.00 %
OPEn/20.84
20.84 %
ZEro Y
0.98 %
Output hold time
during calibration
OPEn/0.89
0.89 %
CALEnd
b10
Measured-value display
F8.1E.EPS
Figure 8.1 Definition of during calibration
During semi-automatic calibration, “under calibration” is the time, starting when a
calibration instruction is executed with an infrared switch or a contact input, to make a
series of calibrations, until the preset output stabilization time elapses.
During automatic calibration, “under calibration” is the time, starting when automatic
calibration is carried out at the calibration start time, until the preset output stabilization
time elapses.
(4) “Error” appears when Error 1 to Error 4 are being issued
IM 11M12A01-05E
8-7
8.2.2
Preference Order of Output Hold Values
The output hold value takes the following preference order:
During error occurrence
During calibration
Preference order (high)
During maintenance
During warm-up
8.2.2E.siki
For example, if the output current is set to 4 mA for “under maintenance”, and no
output-hold output for during calibration is preset, the output is held at 4 mA during the
“ under maintenance” display. However, the output hold is released at the time of
starting the calibration, and the output will be again held at 4 mA after completing the
calibration and when the output stabilization time elapses.
8.2.3
Output Hold Setting
Table 8.4 lists parameter codes with set values for individual set items.
Table 8.4 Parameter Codes for Output Holding
Set items
During warm-up
Parameter code
C04
During maintenance
C05
During calibration
C06
During error occurrence
C07
0:
1:
2:
0:
1:
2:
0:
1:
2:
0:
1:
2:
Set value
4 mA
20 mA
Holds Set value
Without hold feature
Last measured value..
Holds set values.
Without hold feature
Last measured value.
Holds set values.
Without hold feature
Last measured value.
Holds set values.
T8.5E.EPS
8.2.4
Default Values
When the analyzer is delivered or data are initialized, the output current settings are by
default as shown in Table 8.5.
Table 8.5 Output Current Default Values
Status
Output hold (min. and max. values)
Preset value
During warm-up
4 mA
4 mA
Under maintenance
Holds output at value just before maintenance started.
4 mA
Under calibration or blow-back
Holds output at value just before starting calibration
or "blow-back."
On Error occurrence
Holds output at a preset value.
4 mA
3.4 mA
T8.6E.EPS
8-8
IM 11M12A01-05E
8. Detailed Data Setting
8.3 Alarm Setting
The analyzer provides four alarms — high-high, high, low, and low-low alarms settable with measured values. The following sections describe the alarm operations and
setting procedures for the oxygen concentration, humidity, and mixing ratio.
8.3.1
Alarm Values
(1) High-high and high alarm values
High-high alarms and high alarms are issued when they are set to be detected, and if
the measured values exceed the preset values.
(2) Low and low-low alarm values
Low alarms and low-low alarms are issued when they are set to be detected, and if the
measured values are lower than the preset values..
8.3.2
Alarm Output Actions
If the measured values of the oxygen concentration fluctuate between normal (steadystate) values and alarm setpoints, there may often be a lot of alarm-output issuing and
canceling. To avoid this, set the delayed time and allow for hysteresis for alarm canceling uneƥ0the alarm output conditions, as Figure 8.2 shows. When the delay time is
set, an alarm will not be issued so quickly even though the measured value differs from
the steady-state and enters the alarm setpoint range. If the measured value remains
within the alarm setpoint range for a certain period of time (for the preset delay time),
an alarm will result. On the other hand, a similar way as in the above will be done each
time the measured value returns to the steady state from the alarm setpoint range
(canceling the alarm status). If hysteresis is set, alarms will be canceled when the
measured value is less than or more than the preset hysteresis values. If both the delay
time and hysteresis are set, an alarm will be issued if the measured value is in the alarm
setting range and the delay time has elapsed. When the alarm is reset (canceled), it is
required that the measured value be beyond the preset hysteresis value and that the time
is after the preset delayed time. Refer to Figure 8.2 for any further alarm output actions.
The delay time and hysteresis settings are common to all alarm points.
Alarm range
A
B
C
D
7.5%
High-limit alarm setpoint
Hysteresis
2.0%
5.5%
Humidity
Delay time:
Delay time:
5 seconds
5 seconds
Delay time:
5 seconds
Alarm output ON
OFF
F8.2E.EPS
Figure 8.2 Alarm Output Action
IM 11M12A01-05E
8-9
In the example in Figure 8.2, the high-limit alarm point is set to 7.5% H2O, the delayed
time is set to five seconds, and hysteresis is set to 2% H2O.
Alarm output actions in this figure are expressed as follows:
(1) Although the measured value “A” has exceeded the high-limit alarm setpoint, “A”
falls lower than the high-limit alarm setpoint before the preset delayed time of five
seconds elapses. So, no alarm is issued.
(2) The measured value “B” exceeds the high-limit alarm setpoint and the delayed time
has elapsed during that measurement. So, an alarm results.
(3) Although the measured value “C” has fallen lower than the hysteresis set value, that
measurement exceeds the hysteresis set value before the preset delayed time has
elapsed. So, the alarm is not canceled.
(4) The measured “D” has fallen below the hysteresis set value and the preset delayed
time during measurement has elapsed, so the alarm is canceled.
8-10
IM 11M12A01-05E
8. Detailed Data Setting
8.3.3
Alarm Setting Procedure
Set the alarm setpoints following Table 8.6 listing parameter codes.
Table 8.6 Alarm Parameter Codes
Set item
Oxygen concentration high-high alarm setpoint
Oxygen concentration high-alarm setpoint
Oxygen concentration low-alarm setpoint
Oxygen concentration low-low-alarm setpoint
Humidity high-high alarm setpoint
Humidity high-alarm setpoint
Humidity low-alarm setpoint
Humidity low-low-alarm setpoint
Mixing ratio high-high alarm setpoint
Mixing ratio high-alarm setpoint
Mixing ratio low-alarm setpoint
Mixing ratio low-low-alarm setpoint
Oxygen concentration alarm hysteresis
Humidity hysteresis
Mixing ratio hysteresis
Delay alarm action
Oxygen concentration high-high alarm detection
Parameter code
D01
D02
D03
D04
D05
D06
D07
D08
D11
D12
D13
D14
D30
D31
D32
D33
D41
Oxygen concentration high-alarm detection
D42
Oxygen concentration low-alarm detection
D43
Oxygen concentration low-low-alarm detection
D44
Humidity high-high alarm detection
D45
Humidity high-alarm detection
D46
Humidity low-alarm detection
D47
Humidity low-low-alarm detection
D48
Mixing ratio high-high alarm detection
D51
Mixing ratio high-alarm detection
D52
Mixing ratio low-alarm detection
D53
Mixing ratio low-low-alarm detection
D54
Set value
0-100% O2
0-100% O2
0-100% O2
0-100% O2
0-100% H2O
0-100% H2O
0-100% H2O
0-100% H2O
0-1 kg/kg
0-1 kg/kg
0-1 kg/kg
0-1 kg/kg
0-9.9% O2
0-9.9% H2O
0-0.1 kg/kg
0-255 seconds
0: Not detected
1: Detected
0: Not detected
1: Detected
0: Not detected
1: Detected
0: Not detected
1: Detected
0: Not detected
1: Detected
0: Not detected
1: Detected
0: Not detected
1: Detected
0: Not detected
1: Detected
0: Not detected
1: Detected
0: Not detected
1: Detected
0: Note detected
1: Detected
0: Not detected
1: Detected
T8.3.3.1.EPS
CAUTION
Even with alarms set, if “Not detected” has been set in the above alarm detection, no
alarm is issued. Be sure to set “Detected” in the above alarm detection if you use alarm
features.
IM 11M12A01-05E
8-11
8.3.4
Default Values
When the analyzer is delivered, or if data are initialized, the alarm set values are by
default as shown in Table 8.7.
Table 8.7 Alarm Setting Default Values
Set item
Oxygen concentration high-high alarm setpoint
Oxygen concentration high-alarm setpoint
Oxygen concentration low-alarm setpoint
Oxygen concentration low-low alarm setpoint
Humidity high-high alarm setpoint
Humidity high-alarm setpoint
Humidity low-alarm setpoint
Humidity low-low alarm setpoint
Mixing ratio high-high alarm setpoint
Mixing ratio high-alarm setpoint
Mixing ratio low-alarm setpoint
Mixing ratio low-low alarm setpoint
Oxygen concentration hysteresis
Humidity hysteresis
Mixing ratio hysteresis
Delayed time
High-high alarm detection
High-alarm detection
Low-alarm detection
Low-low alarm detection
Set value
100% O2
100% O2
0% O2
0% O2
100% H2O
100% H2O
0% H2O
0% H2O
1 kg/kg
1 kg/kg
0 kg/kg
0 kg/kg
0.1% O2
0.1% H2O
0.001 kg/kg
3 seconds
Not detected
Not detected
Not detected
Not detected
T8.3.4.1.EPS
8-12
IM 11M12A01-05E
8. Detailed Data Setting
8.4 Output Contact Setup
8.4.1
Output Contact
Mechanical relays provide contact outputs. Be sure to observe relay contact ratings. (For
details, see Section 2.1, General Specifications.) The operation modes of each contact
output are as follows. Output contact 1 enables the selection of an open or closed
contact when the contact is "operated". For output contact 2, contact remains closed. The
relay for output contact 1 is energized when its contacts are closed and vice versa.
Accordingly, when no power is supplied to the equipment, those contacts remain open.
In addition, the relay for output contact 2 is energized when the corresponding contact is
open and de-energized when that contact is closed.
Table 8.8 Setting Output Contacts
Operating state
Output contact 1
Open (deenergized) or closed
(energized) selectable.
Output contact 2
Closed (deenergized) only.
When no power
is applied to this
equipment
Open
Closed
T8.9E.EPS
IM 11M12A01-05E
8-13
8.4.2
Setting Output Contact
Set the output contacts following Table 8.9.
Table 8.9 Parameter Codes for Output Contact Setting
Set item
Parameter
code
Set value
Output contact 1
Operation
E10
Error
E20
High-high limit alarm
E21
High-limit alarm
E22
Low-limit alarm
E23
Low-low limit alarm
E24
Maintenance
E25
Calibration
E26
Range change
E27
Warm-up
E28
Calibration-gas
pressure drop
Unburnt gas
detection
E29
E32
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Operated in closed status. (Normally deenergized)
Operated when open. (Normally energized) (Note 1)
Not operated if an error occurs.
Operated if an error occurs.
Not operated if a high-high limit alarm occurs.
Operated if a high-high limit alarm occurs. (Note 2)
Not operated if a high-limit alarm occurs.
Operated if a high-limit alarm occurs. (Note 2)
Not operated if a low-limit alarm occurs.
Operated if a low-limit alarm occurs.
Not operated if a low-low limit alarm occurs.
Operated if a low-low limit alarm occurs. (Note 2)
Not operated during maintenance.
Operated during maintenance (see Section 8.2.1).
Not operated during calibration.
Operated during calibration (see Section 8.2.1).
Not operated when changing ranges.
Operated when changing ranges. (Note 3)
Not operated during warming up.
Operated during warming up.
Not operated while a calibration-gas pressure drop contact is being closed.
Operated while a calibration-gas pressure drop contact is being closed. (Note 4)
Not operated while a unburnt gas detection contact is being closed.
Operated while a unburnt gas detection contact is being closed. (Note 5)
T8.10E.EPS
Note 1: Output contact 2 remains closed.
Note 2: For the high-high alarm, the concentration alarm must be preset (see
Section 8.3).
Note 3: Range change answer-back signal. For this action, the range change must be
preset during the setting of input contacts (Section 8.5).
Note 4: Calibration gas pressure decrease answer-back signal. Calibration gas pressure
decrease must be selected beforehand during the setting of input contacts.
Note 5: Non-combusted gas detection answer-back signals. “Non-combusted gas”
detection must be selected during the setting of input contacts.
WARNING
• Output contact 2 is linked to the detector’s heater power safety switch. As such, if
output contact 2 is on, the heater power stops and an Error 1 (cell voltage abnormal)
or Error 2 (heater temperature abnormal) occurs.
8-14
IM 11M12A01-05E
8. Detailed Data Setting
8.4.3
Default Values
When the analyzer is delivered, or if data are initialized, output contacts are by default
as shown in Table 8.10.
Table 8.10 Output Contact Default Settings
Item
High-high-limit alarm
High-limit alarm
Low-limit alarm
Low-low-limit alarm
Error
Warm-up
Output range change
Calibration
Maintenance
High-limit temperature alarm
Calibration-gas pressure drop
Unburnt gas detection
Operating contact status
s : Present
Output contact 1
Output contact 2
s
s
s
Open
Closed (fixed)
T8.11E.EPS
Note
The above blank boxes indicate the items have been set off.
IM 11M12A01-05E
8-15
8.5 Input Contact Settings
The equipment input contacts execute set functions by accepting a remote contact signal.
Table 8.11 shows the functions executed by a remote contact signal.
Table 8.11 Input Contact Functions
Set item
Calibration-gas pressure
decreased
Measuring range change
Calibration start
Unburnt gas detection
Function
While the contact signal is on, neither semi-automatic nor
automatic calibration is possible.
While contact input is On, range of Analog Output is switched
as follows:
When analog output range is set to "Humidity", then output range is
switched to 0 to 100% H2O.
When analog output range is set to "Mixing ratio", then output range
is switched to 0 to 1 kg/kg.
When analog output range is set to "Oxygen", then range is switched
to 0 to 25% O2.
If the contact signal is applied, semi-automatic calibration starts
(only if the semi-automatic or automatic mode has been setup).
Calibration is started with an applied one-second time interval
single-output contact signal. Even if a continuous contact
signal is applied, a calibration is not repeated. If you
want to perform a second calibration, turn the contact signal off
and then back on.
If the contact signal is on, the heater power will be switched off.
(A one-second time interval single-output signal is available as
a contact signal.) If this operation starts, the sensor
temperature decreases and an error occurs. To restore it to
normal, turn the power off and then back on, or reset the
analyzer.
T8.5.0.1.EPS
CAUTION
To conduct a semi-automatic calibration, be sure to set Calibration setup mode to
“Semi-Auto” or “Auto.”
8.5.1
Setting Input Contact
To set the input contacts, follow the parameter codes given in Table 8.12.
Table 8.12 Parameter Codes for Input Contact Settings
Set item
Input contact 1 (function)
Parameter code
E01
Input contact 2 (function)
E02
Input contact 1 (action)
E03
Input contact 2 (action)
E04
Set value
0: Invalid
1: Calibration gas-pressure decrease
2: Measuring range change
3: Calibration
4: Unburnt gas detection
0: Invalid
1: Calibration gas-pressure decrease
2: Measuring range change
3: Calibration
4: Unburnt gas detection
0: Operated when closed
1: Operated when open
0: Operated when closed
1: Operated when open
T8.13E.EPS
8-16
IM 11M12A01-05E
8. Detailed Data Setting
8.5.2
Default Values
When the analyzer is delivered, or if data are initialized, both input setting are invalid,
and operated when closed.
IM 11M12A01-05E
8-17
8.6 Input Contact Settings
8.6.1
Setting Input Contact
The following describe how to set the date-and-time. Automatic calibration works
following this setting.
Use parameter code “F10” to set the date-and-time.
Table 8.13 Data-and-time Settings
Switch operations
`
`
ENT
>
`
ENT
>
`
>
Display
Brief description
F10
00.01.01
Select the parameter code "F10."
ENT
00.01.01
Touch the [>] to move the position of the digit that is flashing to the right.
`
ENT
00.06.01
Touch the [`] key to change to 6.
>
`
ENT
00.06.01
Touch the [>] key to move the position of the digit that is flashing to the
right one digit.
>
`
ENT
00.06.21
Touch the [`] to change to 2.
>
`
ENT
00.06.21
Touch the [>] key to move the position of the digit that is flashing to the
right one digit.
>
`
ENT
07.18
If you touch the [ENT] key, the current date will be displayed. The display
on the left indicates the date - January 1, 2000. To set June 21, 2000, follow
the steps below:
Let the rightmost character flash, and touch the [>] key to display the time.
Continuously touch the [>] key, then the date and time are alternately
displayed. Displayed on the left is 7:18 a.m.
Omitted here.
>
`
ENT
14.30
Touch the keys and enter the current time in same way as the date has
been entered, on a 24-hour basis. 2:30 p.m. Displayed on the left means 2:40 p.m.
>
`
ENT
14.30
If you touch the [ENT] key, all the digits flash.
>
`
ENT
14.30
Touch the [ENT] key again to set the time.
>
`
ENT
F10
If you touch the [>] and [ENT] keys together, the parameter code selection display
appears.
T8.14E.EPS
The symbol (
8-18
) indicates that the key is being touched. Light characters indicate that the digits are flashing.
IM 11M12A01-05E
8. Detailed Data Setting
8.6.2
Setting Periods over which Maximum and Minimum Values Are Monitored and
Average Values are Calculated.
The equipment enables the display of oxygen concentration average values and maximum and minimum values under measurement (see Section 10.1, later in this manual).
The following section describes how to set the periods over which oxygen concentration
average values are calculated and maximum and minimum values are monitored.
8.6.2.1Procedure
Use the parameter-code table below to set the average, maximum and minimum oxygen
concentration values. Periods over which average is calculated and periods over which
maximum and minimum values are monitored can be set, ranging from 1 to 255 hours.
If the set ranges are beyond the limits specified, an “ERR” will be displayed.
Table 8.14 Parameter Codes for Average, Maximum and Minimum Values
Set item
Periods over which average
values are calculated
Periods over which maximum
and minimum values are
monitored
Parameter code
F11
Set range Units
1 to 255
Hours
F12
1 to 255
Hours
T8.15E.EPS
8.6.2.2Default Value
When the analyzer is delivered, or if data are initialized, periods over which average
values are calculated are set to one hour, and periods over which maximum and minimum values are monitored are set to 24 hours.
8.6.3
Setting Measurement Gas Temperature and Pressure
The analyzer calculates the moisture content contained in exhaust gases and saturated
water vapors from the entered gas temperature and pressure to obtain the relative
humidity and dew point. Enter the exhaust gas temperature and pressure (absolute
pressure) necessary for the calculation (see Section 10.1 later in this manual).
CAUTION
The critical temperature of the saturated water vapor pressure is 3748C. If a gas temperature exceeding 3708C is entered, no correct calculation will be obtained.
8.6.3.1Setting Procedure
To set the gas temperature and pressure, follow the parameter code table for fuel setting.
If you set a value exceeding the setting ranges, an error, ERR will result.
Table 8.15 Fuel Setting Default Value
Set item
Exhaust gas temperature
Exhaust gas pressure
Parameter code
F13
F14
Set value
0 to 3000
0 to 300
Engineering units
8C
kPa abs.
T8.6.3.1.1.EPS
8.6.3.2Default Values
When the analyzer is delivered or data are initialized, the parameters are by default as
shown in Table 8.16.
Table 8.16 Parameter Codes for Exhaust Gas Temperature and Pressure Settings
Set item
Exhaust gas temperature
Exhaust gas pressure
Default setting
3008C
101.33 kPa abs.
T8.6.3.2.1.EPS
IM 11M12A01-05E
8-19
8.6.4
Setting Purging
Purging is to remove condensed water in the calibration gas pipe by supplying a span
calibration gas for a given length of time before warm-up of the detector. This prevents
cell breakage during calibration due to condensed water in the pipe.
Open the solenoid valve for the automatic calibration span gas during purging and after
the purge time has elapsed, close the valve to start warm-up.
Purging is enabled when the cell temperature is 1008 C or below upon power up and the
purge time is set in the range of 1 to 60 minutes.
Displayed alternately
F8.03.EPS
Figure 8.3 Display during Purging
8.6.4.1 Procedure
Use the parameter-code table below to set the purging time.
The allowable input ranges from 0 to 60 minutes.
Table 8.17 Parameter Code
Set item
Purging time
Parameter code
Set range
Units
F15
0 to 60
minutes
T8.17E.EPS
8.6.4.2 Default Value
When the analyzer is delivered, or if data are initialized, purging time is set to 0
minutes.
8-20
IM 11M12A01-05E
9. Calibration
9. Calibration
The following describes the calibration procedures for the ZR202G Zirconia Hightemperature Humidity Analyzer (integrated model).
9.1 Calibration Briefs
9.1.1
Measurement Principle of Zirconia Humidity Analyzer
A solid electrolyte such as zirconia allows the conduction of oxygen ions at high
temperatures. Therefore, when a zirconia-plated element with platinum electrodes on
both sides is heated up in contact with gases having different partial-oxygen pressures on
each side, oxygen ions flow from a high partial-oxygen pressure to a low partial-oxygen
pressure, causing a voltage. When a sample gas introduced into the zirconia-plated
element with the measurement electrode, and air (21.0 vol% O2) is flowed through the
reference electrode, an electromotive force (mV) is produced between the two electrodes, governed by Nernst’s equation as follows:
E = - (RT/nF) log e (y/a) ………………………… Equation (1)
where, R = Gas constant
T = Absolute temperature
n:4
F = Faraday’s constant
y = O2 vol% on the zirconia element measurement electrode
a = O2 vol% to 21.0 vol % O2 on the zirconia element reference electrode
The humidity analyzer uses a sample gas composed of water vapor and air.
(A) For the vol% H2O measurement
x : Assuming that H2O vol% in a mixed gas is measured:
y = (100 – x) 3 0.21 …………………. Equation (2)
From the above equations (1) and (2), we obtain:
E = -K log y/a = -Klog [(100 – x) 30.21 /21]
= - K log (1 –0.01 x) ……………… Equation (3)
where, K = Constant
Using the above equation (3), we can calculate the water vapor in vol% from the
electromotive force.
IM 11M12A01-05E
9-1
Comparison
water vapor
Sample gas
x%
H2O
79%
100%
1 H O
2
concentration
indicator
2
Electrode
Air
100%
Water vapor
100%
Zirconia element
N2
O2
y%
21%
Sample-gas composition
F9.1.EPS
Figure 9.1 Schematic Diagram of Measurement Principle
(B) For the “mixing ratio” measurement
Assuming that the mixing ratio is r kg/kg, then “r” can be calculated from the value of
H2O vol% as follows:
r = 0.622 3 x/(100 – x) …………… Equation (4)
From the above equations (1), (2) and (4), we obtain:
E = -K log y/a = -K log {0.622 3 21/(0.622 + r)/21}
= -K log 0.622/(0.622 + r) … …… Equation (5)
where, K = Constant
With Equation (5), we can obtain the mixing ratio r kg/kg from the electromotive force.
Oxygen concentration vs. cell output
120
Cell output, mV
E = -50.74*log PX/20.6
100
80
60
40
20
0
0.1
1
10
Oxygen concentration PX (%O2)
9-2
100
FAE.EPS
IM 11M12A01-05E
9. Calibration
Oxygen concentration vs, Humidity, Mixing ratio
100
1.0
90
0.9
Humidity, vol % H2O
0.7
60
0.6
50
0.5
40
0.4
30
0.3
20
0.2
10
0.1
0
0
9.1.2
0.8
1
2
3
4
5
6
kg/kg
Mixing ratio, kg/kg
Mixing ratio
Humidity, vol % H2O
80
70
0.0
7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
Oxygen concentration, vol % O2
FBE.EPS
Calibration Gas
A gas with a known oxygen concentration is used for calibration. Normal calibration is
performed using two different gases: a zero gas of low oxygen concentration and a span
gas of high oxygen concentration. In some cases, only one of the gases needs to be used
for calibration. However, even if only one of the gases is normally used, calibration
using both gases should be done at least once.
The zero gas normally used has an oxygen concentration of 0.95 to 1.0 vol%O2 with a
balance of nitrogen gas (N2). The span gas widely used is clean air (at a dew-point
temperature below -208C and free of oily mist or dust, as in instrument air).
For best accuracy, as the span gas use oxygen whose concentration is near the top of the
measurement range, in a nitrogen mixture.
IM 11M12A01-05E
9-3
9.1.3
Compensation
The deviation of a measured value from the theoretical cell electromotive force is
checked by the method in Figure 9.2 or 9.3.
Figure 9.2 shows a two-point calibration using two gases: zero and span. Cell electromotive forces for a span gas with an oxygen concentration p1 and a zero gas with an
oxygen concentration p2 are measured while determining the calibration curve passing
between these two points. The oxygen concentration of the measurement gas is determined from this calibration curve. In addition, the calibration curve corrected by
calibration is compared with the theoretical calibration curve for determining the zeropoint correction ratio represented by B/A3100 (%) on the basis of A, B and C shown in
Figure 9.2 and a span correction ratio of C/A3100 (%). If the zero-point correction ratio
exceeds the range of 100630 % or the span correction ratio becomes larger than 0618
%, calibration of the sensor becomes impossible.
81.92
Zero origin
ez
e2
Cell
electromotive
force, mV
Calibration curve
before correction
e1
es
B
A
Corrected calibration
curve (theoretical
calibration curve)
C
Span origin
0
21.0
p1
Span-gas concentration
p2
0.51
Zero-gas concentration
Oxygen concentration (vol%O2)
Zero-point correction factor = (B/A) x 100 (%) Correctable range: 100 – 30%
Span correction factor = (C/A) x 100 (%)
Correctable range: 0 – 18%
F9.2E.EPS
Figure 9.2 Calculation of a Two-point Calibration Curve and Correction Factors
using Zero and Span Gases
Figure 9.3 shows a one-point calibration using only a span gas. In this case, only the cell
electromotive force for a span gas with oxygen concentration p1 is measured. The cell
electromotive force for the zero gas is carried over from a previous measurement to
obtain the calibration curve. The principle of calibration using only a span gas also
applies to the one-point calibration method using a zero gas only.
81.92
Zero origin
ez
Cell
electromotive
force, mV
Calibration curve before
correction
Previous
zero-gas data
B
A
e1
Corrected calibration curve
(theoretical calibration curve)
es
C
Span origin
0
21.0
p1
Span-gas concentration
0.51
Oxygen concentration (vol%O2)
Zero-point correction factor = (B/A) x 100 (%) Correctable range: 100 – 30%
Span correction factor = (C/A) x 100 (%)
Correctable range: 0 – 18%
F9.3E.EPS
Figure 9.3 Calculation of a One-point Calibration Curve and Correction Factors
using a Span Gas
9-4
IM 11M12A01-05E
9. Calibration
9.1.4
Characteristic Data from a Sensor Measured During Calibration
During calibration, calibration data and sensor status data (listed below) are acquired.
However, if the calibration is not properly conducted (an error occurs in automatic or
semi-automatic calibration), these data are not collected in the current calibration.
These data can be observed using parameter codes A20 to A22, and A50 to A79. For an
explanation and the operating procedures of individual data, consult Section 10.1,
“Detailed Display.”
(1) Record of span correction factor
Recorded the past ten span correction factors.
(2) Record of zero correction factors
Recorded the past ten zero correction factors.
(3) Response time
You can monitor the response time provided that a two-point calibration has been
done in semi-automatic or automatic calibration.
(4) Cell’s internal resistance
The cell’s internal resistance gradually increases as the cell (sensor) deteriorates. You
can monitor the values measured during the latest calibration. However, these values
include the cell’s internal resistance and other wiring connection resistance. So, the
cell’s degrading cannot be estimated from these values only.
When only a span calibration has been made, these values will not be measured, and
previously measured values will remain.
(5) Robustness of a cell
The robustness of a cell is an index for predicting the remaining life of a sensor and is
expressed in a number on four levels.
IM 11M12A01-05E
9-5
9.2 Calibration Procedures
CAUTION
Calibration should be made under normal operating conditions (if the probe is connected
to a dryer, the analyzer will undergo calibration under the operating conditions of the
dryer). To make a precise calibration, conduct both zero-point and span calibrations.
9.2.1
Calibration Setting
The following sets forth the required calibration settings:
9.2.1.1Mode
There are three calibration modes available:
(1) Manual calibration which allows zero and span calibrations or either one manually in
turn;
(2) Semi-automatic calibration which lets calibration start with the touchpanel or a
contact input, and undergoes a series of calibration operations following preset
calibration periods and stabilization time; and
(3) Automatic calibration which is carried out automatically following preset calibration
periods.
Calibrations are limited by the following mode selection:
• When manual calibration is selected:
Manual calibration only can be conducted. (This mode does not allow semi-automatic
calibration with a contact input nor automatic calibration even when its start-up time
has reached.)
• When semi-automatic calibration is selected:
This mode enables manual and semi-automatic calibrations to be conducted.
(The mode, however, does not allow automatic calibration even when its start-up time
has reached.)
• When automatic calibration is selected:
This calibration can be conducted in any mode.
9.2.1.2Calibration Procedure
Select both span and zero calibrations or span calibration only or zero calibration only.
Usually select span and zero calibrations.
9.2.1.3Zero-gas Concentration
Set the oxygen concentration for zero-point calibration. Enter the oxygen concentration
for the zero gas in the cylinder used.
9.2.1.4Span-gas Concentration
Set the oxygen concentration for span calibration. If instrument air is used as the span
gas, enter 21 %O2.
When using the ZO21S Standard Gas Unit (for use of the atmospheric air as a span gas),
use a hand-held oxygen analyzer to measure the actual oxygen concentration, and then
enter it.
9-6
IM 11M12A01-05E
9. Calibration
CAUTION
(1) When instrument air is used for the span calibration, remove the moisture from the
instrument air at a dew-point temperature of -208C and also remove any oily mist
and dust from that air.
(2) If dehumidifying is not enough, or if foul air is used, the measurement accuracy will
be adversely affected.
9.2.1.5Calibration Time
• When the calibration mode is in manual:
First set the output stabilization time. This indicates the time required from the end
of calibration to entering a measurement again. This time, after calibration, the
measurement gas enters the sensor to set the time until the output returns to normal.
The output remains held after completing the calibration operation until the output
stabilization time elapses. The calibration time set ranges from 00 minutes, 00
seconds to 60 minutes, 59 seconds. For more details, consult Section 8.3,”Setting
Output Hold.” When the calibration mode is semi-automatic, set the output stabilization time and calibration time. The calibration time is the time required from starting
the flow of the calibration gas to reading out the measured value. The set calibration
time is effective in conducting both zero and span calibrations. The calibration-time
set ranges from 00 minutes, 00 seconds to 60 minutes, 59 seconds. Figure 9.4 shows
the relationship between the calibration time and output stabilization time.
Calibration start
(contact or switch input)
Span calibration
(span-gas valve open)
Zero-point calibration
(zero-gas valve open)
Calibration time
Calibration time
Analog output status
Stabilization
time
Analog output remains hold
(when output remains hold)
F9.4E.EPS
Figure 9.4 Calibration and Output-stabilization Time Settings
When the calibration mode is in automatic:
In addition to the above output stabilization time and calibration time, set the interval,
start date, and start time.
Interval means the calibration intervals ranging from 000 days, 00 hours to 255 days, 23
hours.
Set the first calibration day and the start-calibration time to the start date and start time
respectively. After the first calibration is carried out, the next calibration will be executed according to the preset calibration intervals.
IM 11M12A01-05E
9-7
9.2.1.6Setting
When setting calibration timing requirements, bear the following precautions in mind:
CAUTION
(1) If the calibration interval is shorter than the sum of stabilization time plus calibration
time, the second calibration start time will conflict with the first calibration. In such a
case, the second calibration will not be conducted. (When both zero and span
calibrations are to be performed, the calibration time is double that required for a
single (zero or span) calibration.)
(2) For the same reason, if the calibration start time conflicts with manual calibration or
semi-automatic calibration, the current calibration will not be conducted.
(3) If the calibration time conflicts with maintenance service or blowback operations,
calibration will start after completing the maintenance service or blowback operations (see Section 8.2.1, earlier in this manual).
(4) If 000 days, 00 hours are set for the calibration intervals, only the first calibration
will be conducted; a second or later calibration will not be conducted.
(5) If a past date is set to the calibration start day, no calibration will be conducted.
Table 9.1 Parameter Codes for Calibration Setting
Set Item
Zero-gas concentration
Parameter code
B01
Span-gas concentration
Calibration mode
B02
B03
Output stabilization
Calibration time
Calibration period
Start date and time
Calibration procedure
B04
B05
B06
B07
B08
Set value
Set Zero-gas concentration
Engineering unit
%O2
Set Span-gas concentration
0 : Manual calibration
1 : Semi-automatic and manual
2 : Automatic, semi-automatic, and manual
0 minutes 0 seconds to 60 minutes 59 seconds
0 minutes 0 seconds to 60 minutes 59 seconds
0 days 0 hours to 255 days 23 hours
Date and time of first calibration
0 : Zero and span
1 : Span only
2 : Zero only
%O2
MM.SS
MM.SS
Date and time
YY.MM.DD.HH.MM
T9.1.EPS
9.2.1.7Default Values
When the analyzer is delivered, or if data are initialized, the calibration settings are by
default, as shown in Table 9.2.
Table 9.2 Default Settings for Calibration
Item
Calibration mode
Calibration procedure
Zero-gas (oxygen) concentration
Span-gas (oxygen) concentration
Output hold (stabilization) time
Calibration time
Calibration interval
Start day and time
Default Setting
Manual
Span - zero
1.00%
21.00%
10 minutes, 00 seconds
10 minutes, 00 seconds
30 days, 00 hours
00 (YY) 01 (MM) 01(DD) 00:00
T9.2.EPS
9-8
IM 11M12A01-05E
9. Calibration
9.2.2
Calibration
9.2.2.1Manual Calibration
For manual calibration, consult Section 7.10, “Calibration”, earlier in this manual.
9.2.2.2Semi-automatic Calibration
(1) Calibration startup using infrared switches
Table 9.3 Semi-automatic Calibration Procedure
>
.
>
.
>
.
>
SA-CAL
ENT
ENT
.
>
b11
ENT
ENT
.
>
Display
ENT
CALEnd
.
Switch operation
ENT
Basic panel
display
Brief description
Change the parameter code to B11. (Previous operations omitted)
Touch the [ENT] key to display "SA-CAL" (Semi Auto CAL).
SPAn
/20.84
Touch the [ENT] key again to open the span-gas solenoid valve.
The span gas then flows. "SPAN" and the currently measured value are alternately
displayed. If the "output hold" is set, the output hold will start at this time.
ZEro
/0.89
When the set calibration time elapses, the span-gas solenoid valve closes automatically,
the zero-gas solenoid valve opens and the zero gas flows. "ZERO" and the currently
measured value are displayed alternately.
End when the set calibration time elapses, the zero-gas solenoid valve then closes
automatically. The ''CALEND'' flashes until the set output stabilization time elapses.
When the output stabilization time elapses, the basic panel display then appears.
Output holding will be released.
When "CAL Err" appears, a calibration coefficient alarm (alarm 6 or 7) may have occurred.
Press [ENT] key to return to basic panel display. Check the alarm number. Refer to Subsection 12.2.2.2, Alarm 6, or Subsection 12.2.2.3,
Alarm 7, remove the cause, and then recalibrate the instrument.
T9.3E.EPS
The symbol (
) indicates that the key is being touched. Light characters indicate that the digits are flashing.
“/” indicates that both are displayed alternately.
(2) To start calibration using an input contact, follow these steps:
• Make sure that Calibration start has been selected in the Input contacts display (see
Section 8.5, earlier in this manual).
• Apply an input contact to start calibration.
(3) To stop calibration midway, follow these steps:
(1) Touch the [>] key and [ENT] key together. The calibration will stop and the
output stabilization time will be set up.
(2) Touch the [>] key once again to return to the basic panel display and the analyzer
will be in normal measurement.
9.2.2.3Automatic Calibration
No execution operations are required for automatic calibration. Automatic calibration
starts in accordance with a preset start day and time. Calibration is then executed at
preset intervals.
CAUTION
Before conducting a semi-automatic or automatic calibration, run the automatic calibration unit beforehand to obtain a calibration flow of 600 6 60 ml/min.
IM 11M12A01-05E
9-9
10. Other Functions
10. Other Functions
10.1 Detailed Display
Select the desired parameter code to display the detailed operation data (see Table 10.1,
“Parameter Codes for Detailed Operation Data.”
IM 11M12A01-05E
10-1
Table 10.1 Parameter Codes for Detailed Operation Data
Parameter
code
Engineering unit
Code
Item
% O2
% H2O
kg/kg
%
8C
A50
A51
A52
A53
A54
A55
A56
A57
A58
Span-gas ratio 0
Span-gas ratio 1
Span-gas ratio 2
Span-gas ratio 3
Span-gas ratio 4
Span-gas ratio 5
Span-gas ratio 6
%
%
%
%
%
%
%
Span-gas ratio 7
Span-gas ratio 8
%
%
A59
A60
A61
A62
A63
A64
A65
A66
A67
A68
A69
A70
A71
A72
Span-gas ratio 9
Zero-gas ratio 0
Zero-gas ratio 1
Zero-gas ratio 2
Zero-gas ratio 3
Zero-gas ratio 4
Zero-gas ratio 5
Zero-gas ratio 6
Zero-gas ratio 7
Zero-gas ratio 8
Zero-gas ratio 9
Calibration history 0
Calibration history1
Calibration history 2
%
%
%
%
%
%
%
%
%
%
%
YY.MM.DD/HH.MM
YY.MM.DD/HH.MM
YY.MM.DD/HH.MM
% H 2O
kg/kg
% O2
YY.MM.DD/HH.MM
A73
Calibration history 3
YY.MM.DD/HH.MM
A74
A75
A76
Calibration history 4
Calibration history 5
Calibration history 6
YY.MM.DD/HH.MM
YY.MM.DD/HH.MM
YY.MM.DD/HH.MM
% O2
YY.MM.DD/HH.MM
A77
A78
Calibration history 7
Calibration history 8
YY.MM.DD/HH.MM
YY.MM.DD/HH.MM
Calibration history 9
Time
Software revision
YY.MM.DD/HH.MM
YY.MM.DD/HH.MM
A41
A42
A43
A79
% O2
A80
% H2O
Occurrence of maximum humidity YY.MM.DD/HH.MM A90
Minimum humidity
% H 2O
Occurrence of minimum humidity
YY.MM.DD/HH.MM
Average humidity
% H2O
Maximum mixing ratio
kg/kg
Occurrence of maximum mixing ratio YY.MM.DD/HH.MM
Minimum mixing ratio
kg/kg
Occurrence of minimum mixing ratio YY.MM.DD/HH.MM
A44
Average mixing ratio
A00
A01
A02
A03
A04
A05
A06
A07
A08
A09
A10
A11
A12
A15
A16
A20
A21
A22
A23
A24
A25
A26
A30
A31
A32
A33
A34
A35
A36
A37
A38
A39
A40
Item
Selection of display items
0: Oxygen concentration
1: Oxygen analyzer (0.0)
2: Oxygen analyzer (0.0)
3: Analog output selected
Oxygen concentration
Humidity
Mixing ratio
Relative humidity
Dew point
Cell temperature
Cold-junction temperature
Meas. gas temperature
Cell voltage
TC voltage
Cold-junction voltage
Output current
Cell response time
Cell internal resistance
Cell robustness
Heater on-time ratio
Oxygen concentration (with
time constant)
Humidity (with time constant)
Mixing ratio (with time constant)
Max. oxygen concentration
Occurrence of maximum
oxygen concentration
Min. oxygen concentration
Occurrence of minimum
oxygen concentration
Average oxygen concentration
Maximum humidity
8C
8C
8C
mV
mV
mV
mA
Seconds
V
%
% O2
kg/kg
Note: The blank parameter codes above are not used in the High-temperature Humidity analyzer.
10-2
Engineering unit
T10.1.EPS
IM 11M12A01-05E
10. Other Functions
10.1.1 Oxygen Concentration
The oxygen concentration in the process gas is displayed (consult Section 9.1.1, earlier
in this manual).
10.1.2 Humidity
The moisture content contained in air is displayed where the process gas contains water
vapors and air (refer to Section 9.1.1, earlier in this manual).
10.1.3 Mixing Ratio
Where the process gas contains water vapors and air, their mixing ratio is displayed
(refer to Section 9.1.1, earlier in this manual).
10.1.4 Relative Humidity
The relative humidity “U” may be obtained using the following theoretical equation (JIS
Z 8806).
U = e/es 3100
where,
e = Water vapor pressure of moist air
es = Saturated water vapor
Since the gas-pressure ratio is equal to the volume ratio, the above equation may be
expressed mathematically by:
U = P 3H/
es 3100
where, P = Gas pressure
H = Humidity (volume ratio)
The saturated water vapor pressure es is determined by a gas temperature, so the relative
humidity can be obtained by entering the parameters. Use parameter F13 for temperature
entry. Use parameter F14 for pressure entry.
10.1.5 Dew Point
The dew point is the temperature at which a water vapor pressure in the moist air is
equal to the saturated water vapor pressure.
The water vapor pressure in the moist air can be obtained from the gas pressure and
volume ratio (= pressure ratio), as given below.
e=P3H
where, e = Water vapor pressure in moist air
P = Gas pressure
H = Humidity (volume ratio)
Use the above equation to find the water vapor in the moist air, and use the theoretical
equation (JIS Z 8806) to obtain the temperature at which that water vapor is equal to the
saturated water vapor pressure.
IM 11M12A01-05E
10-3
10.1.6 Cell Temperature
The cell temperature can be obtained from the thermoelectromotive force and cold
junction temperature; normally 7508C is displayed.
10.1.7 Process Gas Temperature
A process gas temperature set with parameter code F13 is displayed.
10.1.8 Cold Junction Temperature
This is the internal (where the electronics is installed) temperature of equipment, which
compensates for the cold junction temperature for a thermocouple measuring the cell
temperature. If this temperature exceeds 858C, the electronics may fail. If the internal
temperature exceeds this, take countermeasures to reduce the temperature such as by not
exposing the equipment to radiation.
10.1.9 Cell Voltage
The cell (sensor) voltage will be an index to determine the amount of degradation of the
sensor. The cell voltage corresponds to the oxygen concentration currently being
measured. If the indicated voltage approximates the ideal value (corresponding to the
measured oxygen concentration), the sensor will be assumed to be normal.
The ideal value of the cell voltage (E), when the oxygen concentration measurement
temperature is controlled at 7508C., may be expressed mathematically by:
E = -50.74 log (Px/Pa) [mV]
where, Px: Oxygen concentration in the process gas
Pa: Oxygen concentration in the reference gas, (21% O2)
Table 10.2 Oxygen Concentration Vs. Cell Voltage, (cell temperature: 7508C)
%O2
mv
0.1
117.83
0.2
102.56
0.3
93.62
0.4
87.28
0.5
82.36
0.6
78.35
0.7
74.95
0.8
72.01
0.9
69.41
%O2
mv
1
67.09
2
51.82
3
42.88
4
36.54
5
31.62
6
27.61
7
24.21
8
21.27
9
18.67
10
21.0
30
40
50
0
-7.86
-14.2
-19.2
%O2
mv
16.35
%O2
100
mv
-34.4
60
-23.1
70
80
90
-26.5
-29.5
-32.1
T10.2E.EPS
10.1.10 Thermocouple Voltage
The cell temperature is measured with a Type K (chromel-alumel) thermocouple. The
thermocouple cold junction is located in the detector terminal box. The cell temperature
and the thermocouple voltage (including the voltage corresponding to the cold junction
temperature) are displayed.
10.1.11 Cold Junction Voltage
This equipment uses temperature-measurement ICs that measure the cold junction
temperatures. The voltage measured by those ICs is displayed.
10-4
IM 11M12A01-05E
10. Other Functions
10.1.12 Current Output
The analog output current is displayed.
10.1.13 Response Time
The cell’s response time is obtained in the procedure shown in Figure 10.1. If only
either a zero-point or span calibration has been carried out, the response time will not be
measured just as it will not be measured in manual calibration.
Five minutes maximum
Response time
mA
100%
90%
10% of analog
output span
Time
Start calibration
Calibration
complete
The response time is obtained after the corrected calibration curve has been found. The response time
is calculated, starting at the point corresponding to 10% of the analog output up to the point at 90% of
the analog output span. That is, this response time is a 10 to 90% response.
F10.1E.EPS
Figure 10.1 Functional Drawing of Response Time
10.1.14 Internal Resistance of Cell
A new cell (sensor) indicates its internal resistance of 200 V maximum. As the cell
degrades, so will the cell’s internal resistance increase. The degradation of the cell
cannot be found only by changes in cell’s internal resistance, however. Those changes
in the cell’s internal resistance will be a hint to knowing the sensor is degrading. The
updated values obtained during the calibration are displayed.
IM 11M12A01-05E
10-5
10.1.15 Robustness of a Cell
The robustness of a cell is an index for predicting the remaining life of a sensor and is
expressed as one of four time periods during which the cell may still be used:
(1) more than a year
(2) more than six months
(3) more than three months
(4) less than one month
The above four time periods are tentative and only used for preventive maintenance, not
for warranty of the performance.
This cell’s robustness can be found by a total evaluation of data involving the response
time, the cell’s internal resistance, and calibration factor. However, if a zero or span
calibration was not made, the response time cannot be measured. In such a case, the
cell’s robustness is found except for the response time.
Table 10.3 Cell Robustness and Service Life
Cell robustness
5
3
2
1
Cell s service life
One year min.
Six months min.
Three months min.
One month max.
T10.3.EPS
10.1.16 Heater On-Time Ratio
The probe sensor is heated to and maintained at 7508 C. When the measured gas temperature is high, the amount of heater ON-time decreases.
10.1.17 Oxygen Concentration (with time constant), Humidity (with time constant), and
Mixing Ratio (with time constant)
When the output damping is specified in the mA-output range setting, the corresponding
time constant is also displayed.
10.1.18 Maximum Oxygen Concentration, Humidity, and Mixing Ratio
The maximum oxygen concentration and the time of its occurrence during the period
specified in the Averaging display are displayed. If the setup period elapses, the maximum oxygen concentration that has been displayed so far will be cleared and a new
maximum oxygen concentration will be displayed. If the setup period of time is
changed, the current maximum oxygen concentration will be displayed (for more details,
see Section 8.6.2 earlier in this manual).
10.1.19 Minimum Oxygen Concentration, Humidity, and Mixing Ratio
The minimum oxygen concentration and the time of its occurrence during the period
specified in the Averaging display are displayed. If the setup period elapses, the minimum oxygen concentration that has been displayed so far will be cleared and a new
minimum oxygen concentration will be displayed. If the setup period of time is changed,
the current minimum oxygen concentration will be displayed (for more details, see
Section 8.6.2 earlier in this manual).
10-6
IM 11M12A01-05E
10. Other Functions
10.1.20 Average Oxygen Concentration, and Mixing Ratio
The average oxygen concentration during the periods over which average values are
calculated is displayed. If the setup period elapses, the average oxygen concentration
that has been displayed so far will be cleared and a new average oxygen concentration
will be displayed. If the setup period of time is changed, the current average oxygen
concentration will be displayed (for more details, see Section 8.6.2 earlier in this
manual).
10.1.21 Span-gas and Zero-gas Correction Ratios
Span-gas and zero-gas correction ratios for the past ten calibrations are recorded to
enable you to check the degradation of the sensor (cell). If the correction ratio is beyond
the limits as shown in Figure 10.2, the sensor should no longer be used.
These ratios can be found by calculating the data as shown below.
81.92
Zero origin
ez
Cell
electromotive
force, mV
Calibration curve
before correction
Previous
zero-gas data
B
A
e1
Corrected calibration curve
(theoretical calibration curve)
es
C
Span origin
0
21.0
p1
Span-gas
concentration
0.51
Oxygen concentration (vol%O2)
Zero-gas ratio = (B/A) x 100 (%) Correctable range: 100 6 30%
Span-gas ratio = (C/A) x 100 (%) Correctable range: 0 6 18%
F10.2E.EPS
Figure 10.2
10.1.22 History of Calibration Time
The calibration-conducted dates and times for the past ten calibrations are stored in
memory.
10.1.23 Time
The current date and time are displayed. These are backed up by built-in batteries, so no
adjustment is required after the power is switched off. The following shows an example
of displaying June 21, 2000, 3 : 06 p.m.
Displayed alternately
00.06.21
↔
15.06
F10.3E.EPS
Figure 10.3 Date-and-time Display
10.1.24 Software Revision
The revision (number) of the software installed is displayed.
IM 11M12A01-05E
10-7
10.2 Operational Data Initialization
Individual set data initialization enables you to return to the default values set at the time
of delivery. There are two types of initializations: an all set-data initialization and a
parameter-code-based initialization. Table 10.7 lists the initialization items by a parameter code, and default values.
Table 10.4 Parameter Codes for Initialization
Parameter code
Data to be initialized
F30
F31
All data
Data in Group A
F32
Data in Group B
F33
F34
Data in Group C
Data in Group D
F35
Data in Group E
F36
Data in Group F
T10.4EPS
CAUTION
If the above group F is initialized with parameter code F36, items corresponding to
parameter codes F01, F08 and F10 will not be initialized.
10-8
IM 11M12A01-05E
10. Other Functions
10.3 Initialization Procedure
Follow the table below to initialize parameters. The password for initialization is 1255.
Table 10.5 Initialization Procedure
Switch operation
Display
Description
>
`
ENT
F30
Enter the parameter code for the item to be initialized.
The following show an example of entering "F30."
(Previous needed operations are omitted.)
>
`
ENT
0000
Touch the [ENT] key to switch to the password entry display.
>
`
ENT
1000
Enter the password 1255 for initialization.
>
`
ENT
1000
>
`
ENT
1200
>
`
ENT
1200
>
`
ENT
1250
>
`
ENT
1250
>
`
ENT
1255
>
`
ENT
1255
>
`
ENT
USr Go
Touch the [ENT] key again to display "USR GO."
>
`
ENT
USr Go
Touch the [ENT] key once more.
All the digits then flash for two to three seconds, and data initialization starts.
>
`
ENT
The symbol (
F30
After you enter the password and then touch the [ENT] key, all the digits flash.
The initialization is complete, and the parameter code selection display
then appears.
) indicates that the key is being touched.
T10.5E.EPS
Light characters indicate that the digits are flashing.
WARNING
• Do not attempt to turn off the equipment power during initialization (while “USR GO”
is flashing).
IM 11M12A01-05E
10-9
10.4 Reset
Resetting enables the equipment to restart. If the equipment is reset, the power is turned
off and then back on. In practical use, the power remains on, and the equipment is
restarted under program control. Resetting will be possible in the following conditions:
(1) Error 1
if the cell voltage is defective
(2) Error 2
if a temperature alarm occurs
(3) Error 3
if the A/D converter is defective
(4) Error 4
if an EEPROM write error occurs
For details on error occurrence, consult Chapter 12, “Troubleshooting,” later in this
manual.
If any of the above problems occurs, the equipment turns off the power to the detector
heater. To cancel the error, reset the equipment following the steps below, or turn the
power off and then back on.
Note: Make sure that before resetting or restarting the power that there is no problem
with the equipment.
CAUTION
If a problem arises again after the resetting, turn the power off and troubleshoot the
problem by consulting the Troubleshooting chapter later in this manual. When there is
no error, the Basic panel display will appear.
10-10
IM 11M12A01-05E
10. Other Functions
Table 10.6 Resetting
Switch operation
.
`
ENT
Display
Err-01
/------
Brief description
If an error occurs, the error number and "------" are displayed
alternately, as given on the left.
.
`
ENT
PASSno
.
`
ENT
0000
Touch the [ENT] key again to switch to the password entry display.
.
`
ENT
1000
Enter the password 1102.
Hold down the [ENT] key for at least three seconds.
Intermediate switch operations omitted.
.
`
ENT
1102
.
`
ENT
A01
.
`
ENT
G01
.
`
ENT
G01
.
`
ENT
G30
.
`
ENT
All the digits
Change the parameter code to "G30."
Touch the [ENT] key to execute resetting.
light up.
T10.5aE.EPS
The symbol (
) indicates that the key are light characters indicate "flashing".
"/" indicate that the characters are displayed alternately.
IM 11M12A01-05E
10-11
Note
• Parameters of blank item are not used for High Temperature Humidity Analyzer.
Table 10.7 Parameter Codes
Display-related Items in Group A
Parameter Item
Engineering unit
Code
Item
Engineering unit
Selection of display items
0: Oxygen concentration
A50
Span-gas ratio 0
%
1: Oxygen analyzer (0.0)
A51
Span-gas ratio 1
%
2: Oxygen analyzer (0.0)
A52
Span-gas ratio 2
%
A53
Span-gas ratio 3
%
A01
3: Analog output selected
Oxygen concentration
% O2
A54
Span-gas ratio 4
%
A02
Humidity
% H2O
A03
Mixing ratio
kg/kg
A55
A56
Span-gas ratio 5
Span-gas ratio 6
%
%
A04
Relative humidity
%
A57
Span-gas ratio 7
%
A05
A06
Dew point
8C
A58
A59
Span-gas ratio 8
Span-gas ratio 9
%
%
A07
Cell temperature
8C
A60
Zero-gas ratio 0
%
A08
A09
A10
Cold-junction temperature
Meas. gas temperature
8C
8C
A61
A62
A63
Zero-gas ratio 1
Zero-gas ratio 2
Zero-gas ratio 3
%
%
%
A11
A12
Cell voltage
TC voltage
mV
mV
A64
A65
Zero-gas ratio 4
Zero-gas ratio 5
%
%
A15
A16
A20
Cold-junction voltage
Output current
Cell response time
mV
mA
Seconds
A66
A67
A68
Zero-gas ratio 6
Zero-gas ratio 7
Zero-gas ratio 8
%
%
%
A21
A22
Cell internal resistance
Cell robustness
V
A69
A70
Zero-gas ratio 9
%
Calibration history 0 YY.MM.DD/HH.MM
A23
A24
Heater on-time ratio
Oxygen concentration (with
%
% O2
A71
Calibration history 1 YY.MM.DD/HH.MM
A72
Calibration history 2 YY.MM.DD/HH.MM
% H2O
code
A00
time constant)
A25
Humidity (with time /time constant)
A73
Calibration history 3 YY.MM.DD/HH.MM
A26
Calibration history 4 YY.MM.DD/HH.MM
Calibration history 5 YY.MM.DD/HH.MM
Calibration history 6 YY.MM.DD/HH.MM
A34
Mixing ratio (with time /time constant)
kg/kg
A74
Max. oxygen concentration
% O2
A75
Occurrence of maximum
YY.MM.DD/HH.MM A76
oxygen concentration
Min. oxygen concentration
% O2
A77
Occurrence of minimum
YY.MM.DD/HH.MM A78
oxygen concentration
Average oxygen concentration
% O2
A79
A35
Maximum humidity
A36
A37
Occurrence of max. humidity
Minimum humidity
A80
YY.MM.DD/HH.MM A90
% H2O
Time
Software revision
A38
A39
Occurrence of min. humidity
Average humidity
YY.MM.DD/HH.MM
% H2O
A40
A41
A42
Maximum mixing ratio
Occurrence of max. mixing ratio
kg/kg
YY.MM.DD/HH.MM
A30
A31
A32
A33
A43
A44
Occurrence of minimum min. mixing ratio
Occurrence of min. mixing ratio
Average mixing ratio
% H2O
Calibration history 7 YY.MM.DD/HH.MM
Calibration history 8 YY.MM.DD/HH.MM
Calibration history 9 YY.MM.DD/HH.MM
kg/kg
YY.MM.DD/HH.MM
kg/kg
Note1: "/" indicates that both are displayed alternately.
Note2: Parameter codes with no items in the above table are not used in the humdity analyzer.
10-12
YY.MM.DD/HH.MM
T10.6A.EPS
IM 11M12A01-05E
10. Other Functions
Calibration-related Items in Group B
Code
Item
Tuning
Engineering unit
Default setting
B01
Zero-gas concentration
0.3 to 100
% O2
1% O2
B02
Span-gas concentration
4.5 to 100
% O2
21% O2
B03
Calibration mode
0: Manual calibration
Manual calibration
1: Semi-automatic and manual
calibration
2: Automatic, semi-automatic, and
manual calibration
B04
Output stabilization time
B05
Calibration time
0 minutes, 0 seconds to 60 minutes, 59
seconds
MM.SS
10 minutes, 0 seconds
0 minutes, 0 seconds to 60 minutes, 59
MM.SS
10 minutes, 0 seconds
seconds
B06
B07
Calibration period
Start time
0 days 0 hours to 255 days 23 hours
B08
Calibration
0: Zero and span
Calibration concentration
1: Span only
2: Zero only
Display only
B09
DD.HH
30 days, 0 hours
YY.MM.DD/HH.MM 00.01.01.00.00
Zero and span
% O2
measurement
B10
B11
Manual calibration
Semi-automatic calibration
T10.6B.EPS
IM 11M12A01-05E
10-13
Output-related Items in Group C
Code
Item
Tuning
Engineering
Default setting
unit
C01
Analog output
0: Oxygen concentration
Humidity
1: Humidity
2: Mixed ratio
C03
Output mode
0: Linear
Linear
1: Logarithm
C04
Output during warm-up
up
0: Held at 4 mA
1: Held at 20 mA
Output during
2: Set value remains held.
0: Not held
Held at 4 mA.
C05
maintenance
1: Held output just before
maintenance service.
Held output just before
maintenance service.
Output during
calibration
0: Not held
1: Held output just before
2: Set value remains held.
C06
Held output just before
calibration.
calibration.
2: Set value remains held.
C07
C11
Output in abnormal
state
0: Not held
1: Held output just before
Held output at a preset
value.
Min. oxygen
abnormal state occurs.
2: Set value remains held.
See Section 8.1.
% O2
0% O2
25% O2
concentration
C12
Max. oxygen
See Section 8.1.
% O2
C13
concentration
Minimum humidity
See Section 8.1.
C14
C15
C16
C30
Maximum humidity
Minimum mixing ratio
Maximum mixing ratio
Output damping
See Section 8.1.
See Section 8.1.
See Section 8.1.
0 to 255
% H 2O
% H2O
0% H2O
25% H2O
kg/kg
kg/kg
Seconds
0 kg/kg
0.2kg/kg
0 second
factor
C31
C32
C33
C34
Set value during
warm-up
Set value during
maintenance
Set value during
calibration
Set value in abnormal
state
2.4 to 21.6
mA
4 mA
2.4 to 21.6
mA
4 mA
2.4 to 21.6
mA
4 mA
2.4 to 21.6
mA
3.4 mA
T10.6C.EPS
10-14
IM 11M12A01-05E
10. Other Functions
Alarm-related Items in Group D
Code
D01
Oxygen concentration, high-high
alarm setpoint
0 to 100
% O2
Default
setting
100% O2
D02
Oxygen concentration, high-limit
alarm setpoint
Oxygen concentration, low-limit
0 to 100
% O2
100% O2
0 to 100
% O2
0% O2
D03
Item
Tuning
Engineering unit
alarm setpoint
D04
Oxygen concentration, low-low
alarm setpoint
0 to 100
% O2
0% O2
D05
D06
D07
Humidity, high-high alarm setpoint
Humidity, high-alarm setpoint
Humidity, low-alarm setpoint
0 to 100
0 to 100
0 to 100
%H2O
% H2O
% H2O
100% H2O
100 % H2O
0 % H2O
D08
Humidity, low-low alarm setpoint
0 to 100
% H2O
0 % H2O
D11
D12
Mixing ratio, high-high alarm setpoint
Mixing ratio, high-alarm setpoint
0 to 1
0 to 1
kg/kg
kg/kg
1 kg/kg
1 kg/kg
D13
D14
Mixing ratio, low-alarm setpoint
Mixing ratio, low-low alarm setpoint
0 to 1
0 to 1
kg/kg
kg/kg
D30
Oxygen concentration alarm
hysteresis
0 to 9.9
0 kg/kg
0 kg/kg
0.1% O2
D31
D32
Humidity alarm hysteresis
Mixing ratio alarm hysteresis
0 to 9.9
0 to 0.1
D33
D41
Delayed alarm action
Oxygen concentration,
0 to 255
0: Not detected
D42
high-high alarm detection
Oxygen concentration, high-limit
1: Detection
0: Not detected
alarm detection
1: Detection
D43
Oxygen concentration, low-limit
alarm detection
0: Not detected
1: Detection
Not detected
D44
Oxygen concentration, low-low
alarm detection
Humidity, high-high alarm detection
0: Not detected
1: Detection
0: No detection
Not detected
No detection
Humidity, high-alarm detection
1: Detection
0: No detection
No detection
D45
D46
D47
Humidity, low-alarm detection
D48
Humidity, low-low alarm detection
D51
Mix ratio, high-high alarm
D52
Mix ratio, high-alarm detection
D53
Mix ratio, low-alarm
D54
Mix ratio, low-low alarm detection
1: Detection
0: No detection
1: Detection
0: No detection
1: Detection
0: No detection
1: Detection
0: No detection
1: Detection
0: No detection
1: Detection
0: No detection
1: Detection
% O2
% H2O
kg/kg
0.1 % H2O
0.001 kg/kg
Seconds
3 seconds
Not detected
Not detected
No detection
No detection
No detection
No detection
No detection
No detection
T10.6D.EPS
IM 11M12A01-05E
10-15
Contact-related Items in Group E
Code
Item
Tuning
Engineering
Default setting
unit
E01
Selection of input contact 1
0: Invalid
Invalid
1: Calibration gas pressure drop
2: Measurement range change
3: Calibration start
4: Detection of non-combusted gas
E02
Selection of input contact 2
0: Invalid
Invalid
1: Calibration gas pressure drop
2: Measurement range change
3: Calibration start
4: Detection of non-combusted gas
E03
Selecting action of input contact 1
0: Action with closed contact
Action with closed contact
1: Action with open contact
E04
Selecting action of input contact 2
0: Action with closed contact
Action with closed contact
1: Action with open contact
E10
Selecting action of output contact 1
0: Action with open contact (normally
Action with closed contact
energized)
1: Action with closed contact (normally
deenergized)
E20
Output contact 1 error
0: No action
No action
1: Action
E21
Output contact 1, high-high alarm
0: No action
No action
1: Action
E22
Output contact 1, high-limit alarm
0: No action
No action
1: Action
E23
Output contact 1, low-limit alarm
0: No action
No action
1: Action
E24
Output contact 1, low-low alarm
0: No action
No action
1: Action
E25
Output contact 1, during maintenance
0: No action
Action
1: Action
E26
Output contact 1, during calibration
0: No action
No action
1: Action
E27
E28
Output contact 1, measurement range
0: No action
change
1: Action
Output contact 1, during warm up
0: No action
No action
Action
1: Action
E29
E32
Output contact 1, calibration gas
0: No action
pressure decrease
1: Action
Output contact 1, detection of non-
0: No action
combusted gas
1: Action
No action
No action
T10.6E.EPS
10-16
IM 11M12A01-05E
10. Other Functions
Equipment Setup and Others in Group F
Code
Item
Tuning
F01
Equipment setup
0: Oxygen analyzer
1: Humidity analyzer
Not initialized
F02
F04
Selection of temperature units
degree C
F05
Selection of pressure units
F08
Selection of display items
0: degree C
1: degree F
0: kPa
1: psi
0: Oxygen concentration
1: Humidity
2: Mixed ratio
3: Item selected with
analog output
F10
Date
F11
Period over which average
values are calculated
Period over which max. and
min. values are monitored
Process gas temperature
Process gas pressure
F12
F13
F14
F20
F21
F22
F23
F30
F31
F32
F33
F34
F35
F36
Engineering
unit
Default setting
kPa
Humidity
1 to 255 hours
YY.MM.DD/H
H.MM
Hours
One hour
1 to 255 hours
Hours
24 hours
0 to 3000
0 to 300
8C
kPa
abs.
300 8C
101.33 kPa abs.
Initializing all data
Initializing data in group A
Initializing data in group B
Initializing data in group C
Initializing data in group D
Initializing data in group E
Initializing data in group F
T10.6F.EPS
IM 11M12A01-05E
10-17
Inspection-related Items in Group G
Code
Item
Tuning
G01
G11
mA-output loop
Output contact 1
G12
Output contact 2
G15
Automatic calibration
solenoid valve (zero)
Automatic calibration
solenoid valve (span)
Input1 contact
4 to 20
0: Open
1: Closed
0: Open
1: Closed
0: Off
1: On
0: Off
1: On
0: Open
1: Closed
0: Open
1: Closed
G16
G21
G22
Input2 contact
G30
Reset
Engineering Default
unit
setting
mA
4 mA
Open
Open
Off
Off
T10.6G.EPS
10-18
IM 11M12A01-05E
10. Other Functions
10.5 Handling of the ZO21S Standard Gas Unit
The following describe how to flow zero and span gases using the ZO21S Standard Gas
Unit. Operate the ZO21S Standard Gas Unit, for calibrating a system classified as
System 1, according to the procedures that follow.
10.5.1 Standard Gas Unit Component Identification
Carrying case
Flow checker
Checks the zero- and
span-gas flow.
Span gas valve
Controls the span-gas (air) flow.
Zero gas valve regulator
Cover screws (six pcs.)
Tube connection
Gas cylinder
Pump
Supplies span gas (air)
Contains the zero gas. A gas
of 7 Nl is charged to 700 kPa
Zero gas valve
Clamp
Attaches to the gas
cylinder for use.
Clamps the gas cylinder.
Power cord
Applies the power to operate the
pump to supply the span gas.
F10.14E.EPS
Figure 10.4 Standard Gas Unit Component Identification
IM 11M12A01-05E
10-19
10.5.2 Installing Gas Cylinders
Each ZO21S Standard Gas Unit comes with six zero-gas cylinders including a spare.
Each gas cylinder contains 7-liters of gas with a 0.95 to 1.0 vol%O2 (concentration
varies with each cylinder) and nitrogen, at a pressure of 700 kPaG (at 358 C).
The operating details and handling precautions are also printed on the product. Please
read them beforehand.
To install the gas cylinder, follow these steps:
(1) Attach the zero gas valves onto the gas cylinder. First, turn the valve regulator of
the zero gas valves counterclockwise to completely retract the needle at the top from
the gasket surface. Maintaining the valve in this position, screw the valve mounting
into the mouthpiece of the gas cylinder. (If screw connection is proper, you can turn
the screw manually. Do not use any tool.) When the gasket comes in contact with the
mouthpiece of the gas cylinder and you can no longer turn it manually, tighten the
lock nut with a wrench.
(2) Remove the carrying case from the standard gas unit. The case is attached to the
unit with six screws. So, loosen the screws and lift them off.
(3) Slide the gas cylinder through the hole in the back of the unit and connect the tube
(the piping in the unit) to the valve connections. Insert each tube at least 10 mm to
prevent leakage, and secure it using a tube clamp.
(4) Attach the gas cylinder to the case. Extend the valve regulator of the zero gas valves
through the hole in the front panel of the unit and secure the bottom of the cylinder
with the clamp.
(5) Take note of the oxygen concentration of the sealed gas indicated on the gas
cylinder and replace the carrying case. Enter the oxygen concentration of the sealed
gas using the parameter code B01 as a zero-gas oxygen concentration. Also check
that no piping is disconnected.
Thus, the work of installing a gas cylinder is completed. However, gases in the cylinders
cannot immediately flow out after these procedures. To discharge the gases, it is
necessary for the needle in the zero gas valves to puncture a hole in the gas cylinder (see
Section 10.5.3).
10.5.3 Calibration Gas Flow
<Preparation before calibration>
(1) To operate the standard gas unit, place it on a nearly horizontal surface in order to
allow the flow check to indicate the precise flow rate. In addition, a power supply for
driving the span gas (air) supply pump is required near the unit (the length of the
power cord attached to the unit is 2 m). Select a suitable location for the unit near
the installation site of the converter.
(2) Connect the tube connector port of the standard gas unit to the calibration gas inlet
of the detector, using a polyethylene resin tube with an outside diameter of 6 mm. Be
careful to prevent gas leakage.
(3) Fully open the needle valve mounted on the calibration gas inlet of the detector.
(4) Enter the oxygen concentration of the sealed gas (noted from the cylinder) into the
converter. Also check that the oxygen concentration of the span gas is correctly set
(21 vol% O2 for clean air). When using the ZO21S Standard Gas Unit (for use of the
atmospheric air as a span gas), use a hand-held oxygen analyzer to measure the
actual oxygen concentration, and then enter it.
10-20
IM 11M12A01-05E
10. Other Functions
<Flow of span gas (air)>
The standard gas unit is used only when manual calibration is employed.
Therefore, the timing for flowing span gas (air) is included in the manual calibration
flowchart described in Section 7.10.2, earlier in this manual. For operation of the
converter, see Section 7.10.2.
(1) When the “OPEN” and “the measured oxygen concentration” are alternately displayed during calibration, plug the power cord into the power supply socket to start
the pump of the standard gas unit.
(2) Next, adjust the flow rate to 600 6 60 ml/min using the span gas valve “AIR” (the
flow check ball stops floating on the green line when the valve is slowly opened). To
rotate the valve shaft, loosen the lock nut and turn it using a flat-blade screwdriver.
Turning the valve shaft counterclockwise increases the flow rate.
(3) After adjusting the flow rate, tighten the valve lock nut.
(4) After the measured oxygen concentration is stabilized, touch the [ENT] key, then all
the digits flash. Touch the [ENT] key again to display “ZERO Y” Disconnect the
power cord to stop the pump.
<Flow of zero gas>
Touch the [ENT] key to display a zero-gas value set with the parameter code B01.
Touch the [ENT] key again to flash “OPEN” and the “measured oxygen concentration”
alternately. To cause the zero gas flow, follow these steps:
(1) Use the needle of the zero gas valve “CHECK GAS” to puncture a hole in the gas
cylinder installed as described in Section 10.5.2. Fully clockwise turn the valve
regulator by hand.
(2) Next, adjust the flow rate to 600 6 60 ml/min (the flow check ball stops floating on
the green line when the valve is slowly opened). Turn the regulator of the zero-gas
valve back slowly counterclockwise. At that time, the flow rate also decreases as the
inner pressure of the gas cylinder decreases. Monitor the flow check and, when the
ball’s position changes greatly, readjust the valve.
(3) Touch the [ENT] key after the measured oxygen concentration becomes stable.
Then all the digits flash. Touch the [ENT] key again so that the “CALEND” flashes.
Note
Be sure not to terminate the calibration in progress because of a shortage of gas in the
cylinder. Each gas cylinder is operable for nine minutes or more provided the gas is
discharged at the specified rate.
Therefore, if your calibration time is estimated at four minutes, you can operate the
zero-point calibration twice.
(4) Stop the zero-gas flow. Turn the zero-gas valve regulator fully clockwise. If this
valve regulator is not properly adjusted, the needle valve will not close completely
and a cylinder gas may leak. When the output stabilization time elapses, the calibration is complete.
IM 11M12A01-05E
10-21
<Treatment after completion of calibration>
(1) Fully close the needle valve mounted on the calibration gas inlet of the detector.
(2) Remove the tube connecting the detector to the standard gas unit.
WARNING
10-22
Store the standard gas unit with the gas cylinder mounted where the ambient temperature does not exceed 408 C. Otherwise, the gas cylinder may explode. Store the spare
gas cylinders under the same condition.
IM 11M12A01-05E
10. Other Functions
10.6 Methods of Operating Valves in the ZA8F Flow Setting
Unit
The ZA8F Flow Setting Unit is used as the calibration equipment for a system conforming to System 2. Calibration in such a system is to be manually operated. So, you have
to operate the valve of the Flow Setting each time calibration is made (starting and
stopping the calibration gas flow and adjusting the flow rate).
This applies even if you are using the ZR20H Auto Calibration Unit.
10.6.1 Preparation Before Calibration
To operate the ZA8F Flow Setting Unit, prepare for calibration as follows:
(1) Check for a complete closing of the zero gas flow setting valve in the unit and open
the regulator valve for the zero gas cylinder until the secondary pressure equals
[measurement gas pressure plus approx. 50 kPa] (or measured gas pressure plus
approx.150 kPa when acheck valve is used maximum pressure rating is 300 kPa.).
(2) Check that the oxygen concentration of the zero gas and span gas (instrument air 21
vol% O2) in the cylinder is set for the converter.
10.6.2 Operating the Span Gas Flow Setting Valve
The following description is given assuming that instrument air, the same as the reference gas, is used as the span gas. For more details, see Section 7.10.2, “Manual Calibration,” earlier in this manual.
(1) When “OPEN” and the measured oxygen concentration appear alternately during the
span calibration, open the span gas flow setting valve of the flow setting unit and
adjust the flow rate to 600 6 60 ml/min.
Loosen the lock nut if the valve shaft has a lock nut, and turn the valve regulator
slowly counterclockwise. To check the flow rate, use the calibration flow meter. If
the measurement gas pressure is extremely high, adjust the measurement gas pressure
to obtain pressures (listed in Table 10.8) 6 10%.
Table 10.8
Measurement gas
50
100
150
200
pressure, (kPa)
Flow rate, (ml/min.)
500
430
380
350
250
320
T10.6.2.EPS
(2) Adjust the flow rate. After the measured oxygen concentration has stabilized, touch
the [ENT] key, then all the digits will flash. Touch the [ENT] key again to display
“ZERO Y”
IM 11M12A01-05E
10-23
(3) Close the span gas flow setting valve to stop the span gas (air) flow. If the valve
shaft has a lock nut, be sure to tighten the lock nut to prevent any leakage of span
gas into the sensor during measurement.
10.6.3 Operating the Zero Gas Flow Setting Valve
Operate the zero gas flow setting valve during zero-point calibration in the following
procedures:
(1) When the “OPEN” and the measured oxygen concentration appearalternately during
calibration, open the zero gas flow setting valve of the flow setting unit and adjust
the flow rate to 600 6 60 ml/min. To rotate the valve shaft, loosen the lock nut if the
valve shaft has a lock nut, and slowly turn it counterclockwise.
(2) To check the flow rate, use an appropriate calibration gas flow meter. If the measurement gas pressure is extremely high, adjust the measurement gas pressure to
obtain pressures (listed in Table 10.9) 6 10%.
Table 10.9
Measurement gas
pressure, kPa
Flow rate, ml/min.
50
100
150
200
500
430
380
350
250
320
T10.6.3.EPS
(3) Adjust the flow rate. After the measured oxygen concentration is stabilized, touch
the [ENT] key, then all the digits will flash. Touch the [ENT] key again to flash
“CAL END”
(4) Close the zero gas flow setting valve to stop the zero gas flow. Be sure to tighten the
lock nut if valve shaft has a lock nut to prevent any leakage of zero gas into the
sensor during measurement. When the stabilization time elapses, the zero calibration
will be complete.
10.6.4 Operation After Calibration
No special operation of the instrument is needed after calibration. However, it is
recommended that the pressure regulator for the zero-gas cylinders be closed because
calibration is not required so often.
10-24
IM 11M12A01-05E
11. Inspection and Maintenance
11. Inspection and Maintenance
This chapter describes the inspection and maintenance procedures for the EXAxtZR
Zirconia High-temperature Humidity Analyzer (integrated model) to maintain its
measuring performance and normal operating conditions.
CAUTION
When checking the detector, carefully observe the following:
(1) Do NOT touch the probe if it has been in operation immediately just before being
checked. (The sensor at the tip of the probe heats up to 7508 C during operation. If
you touch it, you will get burned.)
(2) Do not subject the probe to shock or cool it rapidly.
The sensor is made of ceramic (zirconia). If the detector is dropped or bumped into
something, the sensor may be damaged and no longer work.
(3) Do not reuse a metal O-ring to seal the cell assembly. If you replace the cell or
remove it from the probe for checking, be sure to replace the metal O-ring. Otherwise, the process gas may leak, and then the leaking corrosive gas will cause the
built-in heater or thermocouple to go open circuit, or the detector may corrode.
(4) Handle the probe with care so that the dust-filter mounted screws on the tip of the
probe do not hurt your finger(s).
(5) Before opening or closing the terminal box, first remove dust, sand, or the like from
the terminal box cover.
IM 11M12A01-05E
11-1
11.1 Inspection and Maintenance of the Detector
11.1.1 Cleaning the Calibration Gas Tube
The calibration gas, supplied through the calibration gas inlet of the terminal box into
the detector, flows through the tube and comes out at the tip of the probe. The tube
might become clogged with dust from the measurement gas. If you become aware of
clogging, such as when a higher pressure is required to achieve a specified flow rate,
clean the calibration gas tube.
To clean the tube, follow these steps:
(1) Remove the detector from the installation assembly.
(2) Following Section 11.1.2, later in this manual, remove the four bolts (and associated
spring washers) that tighten the sensor assembly, and the pipe support as well as the
U-shaped pipe with filter.
(3) Use a rod 2 to 2.5 mm in diameter to clean the calibration gas tube inside the probe.
In doing this, keep air flowing from the calibration gas inlet at about 600 ml/min and
insert the rod into the tube (3-mm inside diameter).
However, be careful not to insert the rod deeper than 40 cm.
(4) Clean the U-shaped pipe. The pipe can be rinsed with water. However, it should be
dried out thoroughly before reassembly.
(5) Restore all components you removed for cleaning. Follow Section 11.1.2 to restore
all components in their original positions. Be sure to replace the O-ring(s) with new
ones.
Exploded view of components
Rod
(with outside diameter
of 2 to 2.5 mm)
Calibration gas tube
F11.1E.EPS
Figure 11.1 Cleaning the Calibration Gas Tube
11-2
IM 11M12A01-05E
11. Inspection and Maintenance
11.1.2 Replacing the Sensor Assembly
The performance of the sensor (cell) deteriorates as its surface becomes soiled during
operation. Therefore, you have to replace the sensor when its life expectancy expires, for
example, when it can no longer satisfy a zero-gas ratio of 100630 % or a span-gas ratio
of 0618 %. In addition, the sensor assembly is to be replaced if it becomes damaged
and can no longer operate during measurement.
If the sensor becomes no longer operable (for example, due to breakage), investigate the
cause and remedy the problem as much as possible to prevent recurrence.
CAUTION
• If the sensor assembly is to be replaced, allow enough time for the detector to cool
down from its high temperature. Otherwise, you may get burned. If the cell assembly
is to be replaced, be sure to replace the metal O-ring and the contact together.
Additionally, even in a case where the cell is not replaced, if the contact becomes
deformed and cannot make complete contact with the cell, replace the contact.
• If there is any corroded or discolored area in the metal O-ring groove in which the
contact is embedded, sand the groove with sandpaper or use a metal brush, and then
sand further with a higher grade of sandpaper (no. 1500 or so), or use an appropriate
metal brush to eliminate any sharp protrusions on the groove. The contact’s resistance
should be minimized.
• Use sensor assemblies manufactured in or after Sept. 2000: the serial number on the
side of the sensor assembly should be 0J000 or later (for example: 0K123, 1AA01
etc.)
1. Identifying parts to be replaced
In order not to lose or damage disassembled parts, identify the parts to be replaced from
among all the parts in the sensor assembly. Normally, replace the sensor, metal O-ring
and contact together at the same time. If required, also replace the U-shaped pipe, bolts,
filter, and associated spring washers.
2. Removal procedures
(1) Remove the four bolts and associated washers from the tip of the detector probe.
(2) Remove the U-shaped pipe support together with the U-shaped pipe. Remove the
filter also.
(3) Pull the sensor assembly toward you while turning it clockwise. Also, remove the
metal O-ring between the assembly and the probe.
(When replacing the assembly, be careful not to allow any flaws on the tip of the
probe with which the metal O-ring comes in contact (the surface with which the
sensor flange also comes in contact. Otherwise, the measurement gas will not be
sealed.)
(4) Use tweezers to pull the contact out of the groove.
(5) Clean the sensor assembly, especially the metal O-ring contact surface to remove any
contaminants adhering to that part. If you can use any of the parts from among those
removed, also clean them up to remove any contaminants adhering to them.
(Once the metal O-ring has been tightened, it can no longer be used. So, be sure to
replace it.)
IM 11M12A01-05E
11-3
3. Part assembly procedure
(1) First, install the contact. Being careful not to cause irregularities in the pitch of the
coil spirals (i.e., not to bend the coil out of shape), place it in the ringed groove
properly so that it forms a solid contact.
Groove in which the contact
(E7042BS) is placed
F11.2E.EPS
Figure 11.2 Installing the Contact
(2) Next, make sure that the O-ring groove on the flange surface of the sensor is clean.
Install the metal O-ring in that O-ring groove, and then insert the sensor in the probe
while turning it clockwise. After inserting it until the metal O-ring comes in contact
with the probe’s O-ring contact surface, properly align the U-shaped-pipe insertion
holes with the bolt openings.
(3) Attach the U-shaped pipe to its support with filter, then fully insert the U-shaped
pipe, filter and its support into the probe.
(4) Coat the threads of the four bolts with antiseize grease and then screw them in along
with the washers. First, tighten the four bolts uniformly by hand, and then use a
torque wrench to tighten all areas of the metal O-ring uniformly, that is, to make sure
the sensor flange is perfectly horizontal to the O-ring’s working face in the probe.
This is done by tightening first one bolt and then its opposing bolt each 1/8 turn, and
then one of the other bolts followed by its opposing bolt, each also 1/8 turn.
This continues in rotating fashion until they are all fully tightened with the torque
wrench preset to approximately 5.9 N•m. If they are not uniformly tightened, the
sensor or heater may be damaged.
Replacement of the sensor assembly is now complete. Install the detector and restart
operation. Calibrate the instrument before making a measurement.
11-4
IM 11M12A01-05E
11. Inspection and Maintenance
Metal O-ring
Sensor
U-shaped pipe
support
Bolts (four)
Contact
Probe
Screw
Filter
U-shaped pipe
Washers
(four)
1/8 turn — tighten bolts 1/8 turn
(approximately 458) each
F11.3E.EPS
Figure 11.3 Exploded View of Sensor Assembly
CAUTION
Optional Inconel bolts have a high coefficient of expansion. If excess torque is applied
while the bolts are being tightened, abnormal strain or bolt breakage may result. So,
tighten the bolts following the instructions given above.
11.1.3 Replacement of the Heater Unit
This section describes the replacement procedure for the heater unit.
The sensor or ceramic heater-furnace core internal structure is subject to fracturing, so
do NOT subject it to strong vibrations or shock. Additionally, the heater unit reaches
high temperatures and is subjected to high voltages.
So, maintenance services should be performed after the power is off and the heater unit
temperature has returned to normal room temperature.
For detail, refer to IM11M12A01-21E “Heater Assembly”.
Note
If the heater strut assembly can not be removed because a screw has fused to its thread,
one of our service representatives can fix it.
IM 11M12A01-05E
11-5
16
A
11
10
14
12
A
13
15
24
8
9
24
7
5
4
3
6
2
24
23
View A-A
18
17
19
25
13
22
14
20
21
F11.4E.EPS
Figure 11.4 Exploded View of Detector
11-6
IM 11M12A01-05E
11. Inspection and Maintenance
Replacement of heater strut assembly
Refer to Figure 11.4 as an aid in the following discussion.
Remove the cell assembly (6), following Section 11.1.2, earlier in this manual.
Remove the two screws (15) that tighten the cover (12) and slide it to the flange side.
Remove the four bolts (10) to remove the converter (16). Then remove the three
connectors to which leadwire from the heater and thermocouple is connected.
Loosen Screw (19) until Heater Strut Assembly (23) plate can be removed.
There’s no need to remove O-ring (18) which prevents Screw (19) from coming out.
Pull out connector (13).
Loosen and remove the screw (8) with a special wrench (part no. K9470BX or equivalent) and then remove the heater strut assembly (23) from the detector (24).
To reassemble the heater strut assembly, reverse the above procedure:
Insert the heater strut assembly (23) into the detector (24), while inserting the calibration
pipe in the detector (24) into the heater section in the heater strut assembly (23) as well
as in the bracket hole. Coat the screw (8) with grease (NEVER-SEEZ: G7067ZA) and
tighten the screw (8) with a special tool (part no. K9470BX or equivalent) with a
tightening torque of 12N•m 6 10 %.
Next, to install the O-rings (22) on the calibration-gas and reference-gas pipes, disassemble the connector (13) in the following procedure:
First, remove the screw (25) and then remove the plate (17) and two caps (20).
If the O-ring (22) remains in the hole, pull them out from the back. Pass the heater and
thermocouple leadwire through the connector (13). Also, pass the calibration-gas and
reference-gas pipes through the opening of the connector (13). If the O-ring (22) fails,
replace it with a new one.
Push the two caps (20) into the associated opening of the connector (13).
Insert the plate (17), aligning it with the groove of the cap (20), and tighten it with the
screw (25). If you attempt to insert the calibration-gas and reference-gas pipes into the
connector (13) without disassembling the connector (13), the O-ring may be damaged.
Tighten Screw (19) in Heater Strut Assembly (23) until connector (13) can’t move.
Reassemble in reverse order to the above disassembly procedure.
When installing the cell assembly (6), replace the metal O-ring (7) with a new one.
11.1.4 Replacement of O-ring
The detector uses three different types of O-rings (14), (21), and (22). One O-ring alone
(14), or two O-rings (21) and (22) are used. (For a pressure-compensating model, two Orings are used for individual uses. Two O-rings (21) and (22) are used for reference-gas
sealing and require periodic replacement.
IM 11M12A01-05E
11-7
11.1.5 Stopping and Re-starting Operation
<Stopping Operation>
When operation is stopped, take care of the followings so that the sensor of the detector
cannot become unused.
CAUTION
When operating an instrument such as boiler or industrial furnace is stopped with the
zirconia oxygen analyzer operation, moisture can condensate on the sensor portion and
dusts may stick to it.
If operation is restarted in this condition, the sensor which is heated up to 7508 C firmly
fix the dusts on itself. Consequently, the dusts can make the sensor performance very
lower. If a large amount of water is condensed, the sensor can be broken and never reuseful.
To prevent the above nonconformity, take the following action when stopping operation.
(1) If possible, keep on supplying the power to converter and flowing reference air to
the sensor.
If impossible to do the above, remove the detector.
(2) If unavoidably impossible to supply the power and removing the detector, keep on
following air at 600ml/min into the calibration gas pipe.
<Restarting Operation>
When restarting operation, be sure to flow air, for 5-10 minutes, at 600ml/min into the
calibration gas pipe before supplying the power to converter.
11-8
IM 11M12A01-05E
11. Inspection and Maintenance
11.2 Inspection and Maintenance of the Converter
The converter does not require routine inspection and maintenance. If the converter does
not work properly, in most cases it probably comes from problems or other causes.
11.2.1 Replacing Fuses
This equipment incorporates a fuse. If the fuse blows out, turn off the equipment power
and replace it in the following procedure.
CAUTION
If a replaced fuse blows out immediately, there may be a problem in the circuit. Check
the circuit carefully to find out why the fuse has blown.
Before removing the electronics, touch the grounded metal part to discharge any static
electricity.
(1) Remove the display cover (Figure 11.5).
(2) Remove the three screws that are located toward you, among the four screws shown
in Figure 11.6. Loosen the remaining one.
(3) Move the electronics up to remove it.
SCREW
Cover of Display
F11.5E.EPS
Figure 11.5 Lock Screw
F11.6E
Figure 11.6 Location of Screw
(4) Disconnect the three connectors from the printed-circuit board, as shown in Figure
11.7, by holding the connector housing. Do not pull the leadwire out to remove the
connectors, otherwise, disconnection may result.
(5) Remove the electronics completely to gain access to the fuse on the bottom of the
equipment case (Figure 11.8).
(6) Replace the fuse with a new one.
F11.8E.EPS
F11.7E.EPS
Figure 11.7 Locations of Connectors
IM 11M12A01-05E
Figure 11.8 Location of Fuse
11-9
(7) To restore the electronics, reverse the above removal procedures.
When restoring the electronics, do not get leadwire jammed in any part of the unit.
(8) Place the electronics and the printed-circuit board on which the fuse is installed
properly; these are directly connected with connectors.
(9) Tighten the four screws in their positions.
(10) Replace and tighten the display cover properly. If the cover is not tightened
sufficiently, the infrared switches will not operate correctly.
j Fuse rating
Check the rating of the fuse and that it satisfies the following :
Maximum rated voltage
: 250 V
11-10
Maximum rated current
: 3.15 A
Type
: Time-lag fuse
Standards
: UL-, CSA- and VDE-approved
Part number
: A1113EF
IM 11M12A01-05E
11. Inspection and Maintenance
11.3 Replacement of Flowmeter for ZR20H Autocalibration
Unit
(1) Remove pipe holding piping connection.
(2) Remove bolts holding flowmeter, and replace it. A white back plate (to make the
float easy to see) is attached. The end of the pin holding down the back plate must
be on the bracket side.
(3) Replace piping, and fix M6 bolts between brackets. *1
*1 : When disassembling and reassembling, mark original positions, and tighten an
extra 5-108 when reassembling. After tightening, do a liquid leakage test.
Vertical mounting
Connect piping pairs A-A’, B-B’, C-C’
A
C
B
Fixing screw pairs
A’
B’
C’
Horizontal mounting
A
B
C
Zr20h_g0.eps
Figure 11.9 Fixing Flowmeter
IM 11M12A01-05E
11-11
12. Troubleshooting
12. Troubleshooting
This chapter describes errors and alarms detected by the self-diagnostic function of the
converter. This chapter also describes the check and restoration methods to use when
problems other than the above occur.
12.1 Displays and Measures to Take When Errors Occur
12.1.1 What is an Error?
An error is detected if any abnormality is generated in the detector or the converter,
e.g., in the cell (sensor) or heater in the detector, or the internal circuits in the converter.
If an error occurs, the converter performs the following:
(1) Stops the supply of power to the heater in the detector to insure system safety.
(2) Causes an error indication in the display to start blinking to notify of an error
generation (Figure 12.1).
(3) Sends an output contact if the error is set up for “Output contact setup” for that
contact (refer to Section 8.4, “Output Contact Setup”).
(4) Changes the analog output status to the one set in “Output hold setting” (refer to
Section 8.2, “Output Hold Setting”).
When the display shown in Figure 12.1 appears, pressing the error indication brings
up a description of the error (Figure 12.2). The content of errors that are displayed
include those shown in Table 12.1.
m
Err-01
m
Displayed alternately
--------F12.1E.EPS
Figure 12.1
Table 12.1 Types of Errors and Reasons for Occurrence
Error
Error-1
Type of error
Cell voltage failure
Error-2
Heater temperature
failure
Error-3
A/D converter failure
Error-4
Memory failure
Reason for Occurrence
The cell (sensor) voltage signal input
to the converter falls below -50 mV.
The heater temperature does not rise during
warm-up, or it falls below 730 8C or exceeds
780 8C after warm-up is completed.
The A/D converter fails in the internal
electrical circuit in the converter.
Data properly are not written into memory in the
internal electrical circuit in the converter.
T12.1E.EPS
IM 11M12A01-05E
12-1
12.1.2 Measures to Take When an Error Occurs
12.1.2.1
Error-1: Cell Voltage Failure
Error-1 occurs when the cell (sensor) voltage input to the converter falls below -50 mV
(corresponding to about 200% O2). The following are considered to be the causes for
the cell voltage falling below -50 mV:
(1) Continuity failure between the sensor assembly electrode and the contact
(2) Damage or deterioration of the sensor assembly
(3) Improper connection between the sensor and the electronics.
(4) Wiring failure inside the detector
(5) Abnormality in the converter electronics
<Locating cause the failure, and countermeasures>
1) Turn off the power to the equipment.
2) Remove the sensor assembly from the probe. Check for dirty or corroded sensor
parts, including electrode and contact.
3) If the contact part is normal, the sensor assembly may be damaged or deteriorated.
Replace the sensor assembly. In this case, be sure to replace the metal O-ring and
contact.
4) If Error-1 still occurs, check that the sensor and the electronics are properly connected.
5) Remove the probe to gain access to the two connectors (four connectors for the
optional automatic calibration unit), as indicated in Figure 12.2. Check these
connectors are properly connected.
6) If Error-1 still occurs, the electronics may be defective. Contact your local Yokogawa
service or sales representative.
12.1.2.2
Error-2: Heater Temperature Failure
This error occurs if the detector heater temperature does not rise during warm-up, or if
the temperature falls below 7308 C or exceeds 7808 C after warm-up is completed.
Causes considered for cases where Error-2 occurs independently are shown below.
(1) Faulty heater in the probe (heater wire breakage)
(2) Faulty thermocouple in the probe
(3) Failure in the converter electronics
<Locating cause of failure, and countermeasures>
(1) Turn off the power to the analyzer.
(2) Remove the probe from the analyzer. Also remove all the connectors between the
converter and probe. Measure the resistance of the heater wire (yellow wire) from the
probe as indicated in Figure 12.2. The heater unit is normal if the resistance is lower
than about 90V. If the resistance is higher than that value, the heater unit may be
defective. In this case, replace the heater unit (refer to Section 11.1.3, “Replacement
of the Heater Unit”).
Heater wire
Multimeter
(V)
F12.2E.EPS
Figure 12.2
12-2
IM 11M12A01-05E
12. Troubleshooting
(3) Next, check the resistance of the thermocouple from the probe. Use a multimeter to
measure the thermocouple resistance between terminal 3 (red cable connected) and
terminal 4 (white cable connected) as indicated in Figure 12.3.
The thermocouple is normal if the resistance is 5V or less. If the value is higher
than 5V, the thermocouple wire may be broken or about to break. In this case,
replace the heater unit (refer to Section 11.1.3, “Replacement of the Heater Unit”).
CAUTION
• Measure the thermocouple resistance value after the difference between the probe tip
temperature and the ambient temperature decreases to 508 C or less. If the thermocouple voltage is large, accurate measurement cannot be achieved.
Thermocouple
YEL
GRN
RED
WHT
1
2
3
4
Multimeter
(V)
F12.3E.EPS
Figure 12.3
(4) If the inspection indicates that the thermocouple is normal, the electronics may be
defective. Consult your local Yokogawa service or sales representative.
12.1.2.3
Error-3: A/D Converter Failure/Error-4: Writing-to-memory Failure
• A/D Converter Failure
It is suspected that a failure has occurred in the A/D converter mounted in the
converter electronics.
• Writing-to memory Failure
It is suspected that a failure has occurred in an operation writing to the memory
(EEPROM) mounted in the converter electronics.
<Locating cause the failure, and countermeasures>
Turn off the power to the converter once and then restart the converter. If the
converter operates normally after restarting, an error might have occurred due to a
temporary drop in the voltage (falling below 85 V, the least amount of voltage required
to operate the converter) or a malfunction of the electronics affected by noise. Check
whether or not there is a failure in the power supply system or whether the converter
and detector are securely grounded.
If the error occurs again after restarting, a failure in the electronics is suspected.
Consult the service personnel at Yokogawa Electric Corporation.
IM 11M12A01-05E
12-3
12.2 Displays and Measures to Take When Alarms are Generated
12.2.1 What is an Alarm?
When an alarm occurs, the alarm indication blinks in the display to notify of the alarm
(Figure 12.4). Pressing the alarm indication displays a description of the alarm. Alarms
include those shown in Table 12.2.
Displayed alternately
AL-06
↔
0.0%
F12.4E.EPS
Figure 12.4
Table 12.2 Types of Alarms and Reasons
Alarm
Alarm 1
through 3
Type of alarm
Oxygen concentration alarm
concentration alarm
humidity, and mixing ratio alarms
Alarm 6
Zero-point calibration coefficient alarm
Alarm 7
Span-point calibration coefficient alarm
Alarm 8
EMF stabilization time-up
Alarm 10
Cold junction temperature alarm
Alarm 11
Thermocouple voltage alarm
Alarm 13
Battery low alarm
Reason for occurrence
Occurs when a measured value exceed or falls below
the set alarm value (refer to Section 8.3, "Alarm Setting").
Generated when the zero correction factor is
out of the range of 100 6 30% in automatic and
semiautomatic calibration (refer to Section 9.1.3,
"Compensation").
Generated when the span correction factor is out
of the range of 0 6 18% in automatic and semiautomatic
calibration (refer to Section 9.1.3, "Compensation").
Generated when the cell (sensor) voltage is not
stabilized even after the calibration time is up in
automatic and semiautomatic calibration.
Occurs when an equipment internal temperature
exceeds 858C.
Generated when thermocouple voltage exceeds 42.1 mV
(about 10208C ) or falls below -5 mV (about -1708C).
Internal battery needs replacement.
T12.2E.EPS
If an alarm occurs, such measures as turning off the heater power are not carried out.
The alarm is released when the cause for the alarm is eliminated. If the analyzer power
is turned off after an alarm occurs, and then turned on before the cause of the alarm is
eliminated, the alarm will occur again. However, alarms 6, 7, and 8 (alarms related to
calibration) are not generated unless calibration is executed.
12.2.2 Measures Taken When Alarms Occur
12.2.2.1
Alarms 1 through 3: Oxygen Concentration, Humidity, and Mixing Ratio Alarms
These alarms occur when a measured value exceeds an alarm setpoint or falls below it.
For more details, see Section 8.3, “Alarm Setting,” earlier in this manual.
12.2.2.2
Alarm 6: Zero-point Calibration Coefficient Alarm
In calibration, this alarm is generated when the zero correction factor is out of the
range of 100 630% (refer to Section 9.1.3, “Compensation”). The following can be
considered the causes for this:
(1) The zero-gas oxygen concentration does not agree with the value of the zero-gas
concentration set (refer to Section 9.2.1,“Calibration Setup”). Otherwise, the span
gas is used as the zero gas.
(2) The zero-gas flow is out of the specified flow (600 6 60 mL/min).
(3) The sensor assembly is damaged and so cell voltage is not normal.
12-4
IM 11M12A01-05E
12. Troubleshooting
<Locating cause of failure, and countermeasures>
(1) Confirm the following and carry out calibration again: If the items are not within
their proper ranges, correct them.
a. If the indication for “Zero gas conc.” is selected in “Calibration setup,” the set
value should agree with the concentration of zero gas actually used.
b. The calibration gas tubing should be constructed so that the zero gas does not leak.
(2) If no alarm is generated as a result of carrying out re-calibration, it is suspected that
improper calibration conditions were the cause of the alarm in the preceding calibration. In this case, no specific restoration is necessary.
(3) If an alarm is generated again as a result of carrying out re-calibration, deterioration
of or damage to the sensor assembly is suspected as the cause of the alarm. Replacement of the cell with a new one is necessary. However, before replacement, carry out
the following:
Check the cell voltages when passing the zero gas and span gas.
a. Display the cell voltage with the parameter code A11.
b. Check whether or not the value of the displayed cell voltage is very different from
the theoretical value at each oxygen concentration. Confirm the theoretical values of
the cell voltage in Table 12.3. Although it cannot be generally specified as to what
extent the difference from the theoretical value is allowed, consider it to be approximately 610 mV.
Table 12.3 Oxygen Concentration and Cell Voltage Oxygen concentration
Oxygen concentration (% O2)
1%
21%
Cell voltage (mV)
67.1
0
T12.3.EPS
(4) Confirm whether deterioration of or damage to the sensor assembly that caused the
alarm has occurred abruptly during the current calibration in the following procedure:
Check the history of the span gas ratio with the parameter codes A50 and A51.
Check the history of the zero gas ratio with the parameter codes A60 through A69.
The larger the parameter code number, the older the displayed data. Changes in
deterioration of the sensor can be seen.
(5) If deterioration of the sensor assembly has occurred abruptly, it may show that the
check valve, which prevents moisture in the furnace from getting into the calibration
gas tubing, has failed. If the gas in the furnace gets into the calibration gas tubing, it
condenses and remains in the gas tubing. The sensor assembly is considered to be
broken for the reason that the condensation is blown into the sensor assembly by the
calibration gas during calibration and so the cell cools quickly.
(6) If the sensor assembly has been gradually deteriorating, check the sensor assembly
status in the following procedure:
a. Display “Cell resistance” by specifying the parameter code A21. A new cell will
show a cell resistance value of 200V or less. On the other hand, a cell
(sensor) that is approaching the end of its service life will show a resistance value
of 3 to 10 kV.
b. Display “Cell robustness” by specifying the parameter code A22. A good cell
(sensor) will show “5,” “Life > 1 year” (refer to Section 10.1.15).
IM 11M12A01-05E
12-5
12.2.2.3
Alarm 7: Span Calibration Coefficient Alarm
In calibration, this alarm is generated when the span gas ratio is out of the range of 0
6 18% (refer to Section 9.1.3, “Compensation”).
The following are suspected as the cause:
(1) The oxygen concentration of the span gas does not agree with the value of the span
gas set “Calibration setup.”
(2) The flow of the span gas is out of the specified flow value (600 6 60 mL/min).
(3) The sensor assembly is damaged and the cell voltage is abnormal.
<Locating cause of failure, and countermeasures>
(1) Confirm the following and carry out calibration again:
If the items are not within their proper states, correct them.
a. If the display “Span gas conc.” is selected in “Calibration setup,” the set value
should agree with the concentration of span gas actually used.
b. The calibration gas tubing should be constructed so that the span gas does not leak.
(2) If no alarm is generated as a result of carrying out re-calibration, it is suspected that
improper calibration conditions were the cause of the alarm in the preceding calibration. In this case, no specific restoration is necessary.
(3) If an alarm is generated again as a result of carrying out re-calibration, deterioration
of or damage to the cell (sensor) is suspected as the cause of the alarm.
Replacement of the cell with a new one is necessary.
However, before replacement, carry out the procedure described in step (3) and later
of <Search for cause of failure and taking measure> in Section 12.2.2.2, “Alarm 6:
Zero-point Calibration Coefficient Alarm.”
12.2.2.4
Alarm 8: EMF Stabilization Time Over
This alarm is generated if the sensor (cell) voltage has not stabilized even after the
calibration time is up for the reason that the calibration gas (zero gas or span gas) has
not filled the sensor assembly of the detector.
<Cause of alarm>
(1) The flow of the calibration gas is less than normal (a specified flow of 600 6 60
mL/min).
(2) The length or thickness of the calibration gas tubing has been changed (lengthened
or thickened).
(3) The measuring gas flows toward the tip of the probe.
(4) The sensor (cell) response has deteriorated.
<Locating cause of failure, and countermeasures>
(1) Carry out calibration by passing the calibration gas at the specified flow (600 6 60
mL/min) after checking that there is no leakage in the tubing.
(2) If calibration is carried out normally, perform a steady operation without changing
the conditions.
If the error occurs again, check whether or not the reason is applicable to the
following and then replace the sensor assembly.
• A lot of dust and the like may be sticking to the tip of the sensor. If dust is found,
clean and remove the dust (see Section 11.1.1).
In addition, if an error occurs in calibration even after the sensor assembly is
replaced, the influence of measured gas flow may be suspected. Do not let the
measured gas flow toward the tip of the detector probe, for example, by changing the
mounting position of the detector.
12-6
IM 11M12A01-05E
12. Troubleshooting
12.2.2.5
Alarm 10: Cold Junction Temperature Alarm
The equipment incorporates a temperature sensor. An alarm is issued when the sensor
temperature exceeds 858 C. If internal temperature of this equipment exceeds 858 C, the
electronics may fail.
<Locating cause of failure, and countermeasures>
This equipment can be used at ambient temperatures up to 558 C. If the ambient temperatures may exceed the limits, take appropriate measures — such as applying heat insulating material to the furnace walls, and adding a sun shield to keep out direct sunlight.
If this alarm occurs even when the ambient temperature is under 558 C, the electronics
may be defective. Contact your local Yokogawa service or sales representative.
12.2.2.6
Alarm 11: Thermocouple Voltage Alarm
This alarm is generated when the emf (voltage) of thermocouple falls below -5 mV
(about -1708 C) or exceeds 42.1 mV (about 10208 C).
(1) A failure of the thermocouple at the detector occurred.
(2) A failure of the electrical circuits occurred.
<Search for cause of failure and taking measure>
(1) Turn off the power to the analyzer.
(2) Remove the probe from the analyzer. Also remove all the connectors between the
converter and probe. Measure the resistance of the heater wire (yellow wire) from the
probe as indicated in Figure 12.5. The heater unit is normal if the resistance is lower
than about 90V. If the resistance is higher than that value, the heater unit may be
defective. In this case, replace the heater unit (refer to Section 11.1.3, “Replacement
of the Heater Unit”).
Heater wire
Multimeter
(V)
F12.2E.EPS
Figure 12.5
(3) Next, check the resistance of the thermocouple from the probe. Use a multimeter to
measure the thermocouple resistance between terminal 3 (red cable connected) and
terminal 4 (white cable connected) as indicated in Figure 12.6.
The thermocouple is normal if the resistance is 5V or less. If the value is higher than
5V, the thermocouple wire may be broken or about to break. In this case, replace the
heater unit (refer to Section 11.1.3, “Replacement of the Heater Unit”).
CAUTION
• Measure the thermocouple resistance value after the difference between the probe tip
temperature and the ambient temperature decreases to 508C or less. If the thermocouple voltage is large, accurate measurement cannot be achieved.
IM 11M12A01-05E
12-7
Thermocouple
YEL
GRN
RED
WHT
1
2
3
4
Multimeter
(V)
F12.3E.EPS
Figure 12.6
(4) If the inspection indicates that the thermocouple is normal, the electronics may be
defective. Consult your local Yokogawa service or sales representative.
12.2.2.7 Alarm 13: Battery Low Alarm
An internal battery is used as backup for the clock. After this alarm occurs, removing
power from the instrument may cause the clock to stop but should not affect stored
parameters. The internal clock is used for blowback scheduling; if you use this then after
a battery alarm occurs (until the battery is replaced) be sure to check / correct the date
and time every time you turn on the power.
<Corrective action>
When the battery low alarm occurs, remember that the battery cannot be replaced by the
user. Contact your Yokogawa service representative.
Note
Battery life varies with environmental conditions.
* If power is applied to the instrument continuously, then the battery should not run
down, and life is typically about ten years. However the battery will be used during
the time interval between shipment from the factory and installation.
* If power is not applied to the instrument, at normal room temperatures of 20 to 258C
then battery life is typically 5 years, and outside this range but within the range -30 to
+708C then battery life is typically 1 year.
12-8
IM 11M12A01-05E
12. Troubleshooting
12.3 Countermeasures When the Measured Value Shows
Error
The causes that the measured value shows an abnormal value is not always due to
instrument failures. There are rather many cases where the causes are those that measuring gas itself is in abnormal state or external causes exist, which disturb the instrument
operation. In this section, causes of and measures against the cases where measured
values show the following phenomena will be described.
(1) The measured value is higher than the true value.
(2) The measured value is lower than the true value.
(3) The measured value sometimes shows abnormal values.
12.3.1 Measured Value Higher Than True Value
<Causes and Countermeasures>
(1) The measuring gas pressure becomes higher.
When the process gas pressure is higher than that in calibration by np (kPa), the
measured oxygen concentration value X (vol% O2) may be expressed mathematically by:
X = Y[1 + (np/101.30)]
where, Y = Measured oxygen concentration value at the same pressure as in
calibration (vol% O2)
If an increment of the measured value by a pressure change cannot be neglected,
appropriate measures must be taken. Observe the following points for possible improvement in each process.
• Can the facility’s characteristics be improved so that a pressure change does not
occur?
• Can a calibration be conducted under the average process gas pressure (internal
pressure of a dryer)?
(2) Moisture content in a reference gas changes (increases) greatly.
If air at the analyzer installation site is used for the reference gas, a large change of
moisture in the air may cause an error in the measured oxygen concentration value
(vol% O2). If this error cannot be ignored, use a gas in which moisture content is
constant, such as instrument air in almost dry condition as a reference gas.
(3) Calibration gas (span gas) is leaking in the sensor.
If the span gas is leaking in the sensor because of a failure of the valve provided in the
calibration gas tubing system, the measured value shows a value a little higher than
normal.
Check the valves (needle valves, check valves, solenoid valves for automatic calibration,
or the like, in the calibration gas tubing system for leakage. For manual valves, check
them after confirming that they are in fully closed states. In addition, check the tubing
joints for leakage.
IM 11M12A01-05E
12-9
(4) The reference gas is mixing into the measuring gas and vice versa.
When such mixing occurs, since the deference between oxygen partial pressures on the
sensor anode and cathode sides becomes smaller, the measured value shows a lower
value. See Section 11.1.2 to check that the sensor has been properly installed. An error
which does not indicate Error-1 may occur in the sensor. If the sensor assembly is loose,
or if there is any damage to the O-ring, the measured gas will leak into the reference gas
or vice versa. Because of a low oxygen partial pressure between the reference and
measurement sides, the oxygen concentration reading is high, and the humidity reading
is low. In this case, the sensor assembly needs to be reinstalled (see Section 11.1.2). In
such a case, be sure to remove the O-ring and replace it with a new one. In addition, if
any crack is found, replace the sensor assembly with a new one (see Section 11.1.2,
earlier in this manual).
CAUTION
See the cell robustness in function A22 for sensor quality.
12.3.2 Measured Value Lower Than True Value
<Causes and Countermeasures>
(1) The measuring gas pressure becomes lower.
If an increment of the measured value due to pressure change cannot be neglected, take
appropriate measures (see Section 11.1.1 (1)).
(2) Moisture content in a reference gas changes (decreases) greatly.
Changes in the moisture content contained in the instrument air will cause an error of
the humidity measurement (vol% H2O or kg/kg). If this error cannot be ignored, use a
gas in which the moisture content is constant, such as instrument air in almost dry
condition, as a reference gas.
(3) The calibration gas (zero gas) is leaking in the detector.
If the zero gas is leaking in the detector because of a failure of the valve in the calibration gas tubing system, the measured value will show a slightly lower value than normal.
Check the valves in the calibration gas tubing system for leakage. For manual valves,
check them after confirming that they are in the fully closed state.
12-10
IM 11M12A01-05E
12. Troubleshooting
12.3.3 Measurements Sometimes Show Abnormal Values
<Causes and Countermeasures>
(1) Noise may be mixing in with the converter from the detector output wiring.
Check whether the converter and detector are securely grounded.
Check whether or not the signal wiring is laid along other power cords.
(2) The converter may be affected by noise from the power supply.
Check whether or not the converter power is supplied from the same outlet, switch,
or breaker as other power machines and equipment.
(3) Poor wiring contact
If there is poor contact in the wiring, the sensor voltage or thermocouple emf
(voltage) may vary due to vibration or other factors.
Check whether or not there are loose points in the wiring connections or loose
crimping (caulking) at the crimp-on terminal lugs.
(4) There may be a crack in the sensor or leakage at the sensor-mounting portion.
If the indication of the measured value varies in synchronization with the pressure
change in the furnace, check whether or not there is a crack in the sensor or whether
the sensor flange is sticking tightly to the probe-attaching face with the metal O-ring
squeezed.
(5) There may be leakage in the calibration gas tubing
In the case of a negative process inner pressure, if the indication of the measured
value varies with the pressure change in the furnace, check whether or not there is
leakage in the calibration gas tubing.
IM 11M12A01-05E
12-11
12-12
IM 11M12A01-05E
Customer
Maintenance
Parts List
Model ZR202G
Zirconia High Temperature Humidity
Analyzer (Integrated type)
A
A
13
13
View A-A
2
7
6
5
3
4
9
10
11
8
12
Parts No.
MS-code
Qty.
2
3
4
-----------E7042BR
K9470BM
K9473AN
1
1
1
1
Detector Assembly
Plate
Pipe
Pipe for Option code "/C"
5
E7042DW
4
Washer (SUS316 stainless steel)
6
G7109YC
K9470BK
4
4
Bolt (M5x12, SUS316 stainless steel)
Bolt (M5x12, inconel) for Option code "/C"
!
1
Cell Assembly
Item
7
ZR01A01-01
ZR01A01-02
ZR01A01-05
ZR01A01-10
8
9
10
11
Description
1 piece
2 pieces
5 pieces
10 pieces
E7042BS
K9470BJ
1
1
E7042AY
------------
1
1
1
12
K9470ZF
K9470ZG
------------
13
K9470ZK
K9470ZL
ZR202A-!!!-!-A
1
1
1
Contact
Metal O-ring
Filter Assembly
Bolt and Washeres
G7109YC 3 4 + E7042DW 3 4
K9470BK 3 4 + E7042DW 3 4 for Option code "/C"
Calibration Tube Assembly
Calibration Tube Assembly
Calibration Tube Assembly for Option code "/C"
Heater Assembly
All Rights Reserved, Copyright © 2000, Yokogawa Electric Corporation.
Subject to change without notice.
Yokogawa Electric Corporation
F04E.EPS
CMPL 11M12A01-05E
1 st Edition : Aug.2000(YK)
5t h Edition : Jul.2005(YK)
Hood for ZR202G
1
ZR202G_F.eps
CMPL 11M12A01-05E
Item
Parts No.
Qty.
Description
1
K9472UF
1
Hood
All Rights Reserved, Copyright © 2000, Yokogawa Electric Corporation.
5 th Edition : Jul.2005(YK)
Customer
Maintenance
Parts List
Model ZR20H
Integrated type Zirconia Oxygen Analyzer/
High Temperature Humidity Analyzer,
Automatic Calibration Unit
4
5
SPAN IN
REF IN
ZERO IN
8
7
10PSI
K9473XC
Qty
Description
1
Flowmeter
All Rights Reserved, Copyright © 2001, Yokogawa Electric Corporation.
Yokogawa Electric Corporation
NUPRO
Part No.
8
SS-2C2-10
Item
CMPL 11M12A01-12E
1st Edition : Feb. 2001 (YK)
2nd Edition : Aug. 2001 (YK)
Customer
Maintenance
Parts List
Model ZO21S
Zirconia Oxygen Analyzer/ High Temperature
Humidity Analyzer, Standard Gas Unit
Item
Part No.
Qty
1
2
3
!
E7050BA
E7050BJ
1
1
1
Description
Pump (see Table 1)
Zero Gas Cylinder (x6 pcs)
Needle Valve
Table 1
Power
Pump
AC 100V
110
115
E7050AU
AC 200V
220
240
E7050AV
© Copyright 2000(YK). 3rd Edition: Dec. 2000 (YK)
Yokogawa Electric Corporation
CMPL 11M3D1-01E
Revision Record
Manual Title : Model ZR202G Integrated type Zirconia High Temperature Humidity Analyzer
Manual Number : IM 11M12A01-05E
Edition
Date
Remark (s)
1st
Nov. 2000
Newly published
2nd
Mar. 2001
Revised Section
2.1.2 Some parts of MS Code changed, Sun shield hood external dimensions added;
2.2 ZA8F Flow setting unit style changed, adjusting pressure value changed when a check
valve is used, ZR20H Autocalibration unit added;
3.3 Installation of ZR20H added;
4.3 Piping procedure for system 3 revised;
6.2 Names of ZR20H added;
7.2 Pressure value changed when a check valve is used;
10.6.1 Pressure value changed when a check valve is used;
11.1 Some parts of maintenance procedure changed;
Sun shield hood added to CMPL 11M12A01-05E
ZR20H Autocalibration unit added to CMPL 11M12A01-12E
3rd
Sept. 2001
Revised Section
1.2 Model ZR202A Heater Assembly added ;
2.2.1 ZA8F Flow setting Unit error correction ;
2.4.7 Model ZR202A Heater Assembly ;
8.5 Table 8.11 Input Contact Functions changed ;
11.1.3 Reference document added to Replacement of the Heater Unit ;
Heater Assembly added to CMPL 11M12A01-05E ;
CMPL 11M12A01-12E Model ZR20H changed ;
4th
July. 2003
Notation of flange specification unified
G7004XF/K9473XG Airset added ;
CMPL 11M12A01-05E Cell assembly parts no. changed, revised to 4th edition.
5th
Apr.2005
Revised Section
Introduction Added description regarding modification ;
1.2.1 “ System Components” Changed part numbers of air set in table ;
2.1.2 Changed safety and EMC conforming standards and paint colors ;
2.2.2 Changed Finish color ;
2.3
Added discription “ Non CE Mark ” ;
2.4.3 “ Air Set” Changed part numbers and drawing of air set ;
4.2.1 “ Piping Parts for System 2” Change part numbers of air set in Table 4.2
Edition
6th
Date
Remark (s)
Sep. 2006
Revised Section
2.4.3
"Air Set," Part No. K9473XH or K9473XJ, Standard Specification:
Changed descriptions partly;
"Air Set,"Part No. G7004XF or K9473XG, Standard Specification:
Changed descriptions partly;
2.4.5
"Cylinder Regulator Valve (Part No. G7013XF or G7014XF)", Standard
Specifications; Changed descriptions partly and drawing;
4.4
"Piping for the Detector with Pressure Compensation": Deleted Section.
5.3
"Wiring Power and Ground Terminals": Added description in Figure 5.5;
5.3.2
"Wiring for Ground Terminals": Added item (4);
7.4.5
"Changing Set Values": Changed description in table (1);
7.9.2
"Checking calibration Contact Output": Changed description in table 7.10;
8.2.2
"Preference Order of Output Hold Value": Deleted "or blow back";
8.2.3
"Output Hold Setting": Table 8.4, Parameter code C06, "maintenance" should
read "calibration".;
8.2.4
"Default Values": Revised Table 8.5;
8.4.1
"Output Contact": Made some corrections;
8.4.2
"Setting Output Contact":
Revised Table 8.9;
WARNING: Deleted second warning;
9.2.2.2
"Semi-automatic Calibration": Table 9.3, Added note;
10.4
Table 10.6, Contact-related Items in Group E. Deleted some codes;
12.2.1
"What is an Alarm?": Table 12.2, Added Alarms 11 and 13;
12.2.2.2
Alarm 6: Changed descriptions;
12.2.2.3
Alarm 7: Changed descriptions;
• p. 12-7 and 12-8,
Added Sections 12.2.2.6 and 12.2.2.7;
• CMPL 11M12A01-05E: Changed part numbers of Items 4 and 12.
IM 11M12A01-05E