GE
Digital Solutions
Druck RTX 1000H series
HART® Pressure transmitter
User Manual - 111M3356 Revision English
© 2016 General Electric Company. All Rights Reserved. Specifications are
subject to change without notice. GE is a registered trademark of General
Electric Company. Other company or product names mentioned in this
document may be trademarks or registered trademarks of their respective
companies, which are not affiliated with GE.
RTX 1000H series User Manual
Safety
To use this equipment safely, you must use the data and procedures in these
publications:
•
The “Calibration data and instructions” for the equipment.
•
The applicable “Requirements in hazardous areas/locations” manual (for use
of the product in explosive atmospheres).
•
The applicable “Control Drawing” (for use of the product in explosive
atmospheres).
•
This user manual.
•
The product data sheet or specification drawing (if applicable).
These publications contain instructions to operate the equipment and maintain it in
a safe condition. To prevent damage or injury:
•
Obey all warnings and cautions.
•
Use the equipment only for the specified applications.
•
Operate the equipment only within the specified limits.
To install and use the equipment, use only approved engineers who have the
necessary skills and qualifications.
Explosive Atmospheres (Hazardous Areas / Locations)
Some versions of this equipment are certified for use in explosive atmospheres. For
these versions, the following publications contain additional data:
110M1116
IECEx and ATEX certifications: Requirements in hazardous areas
110M1117
FM Approved (United States & Canada): Requirements in hazardous
locations
X-A3-0551
RTX1000H Series Control Drawing (FM)
European Single Market – Directives of the European Union
This product complies with the requirements of the relevant EU directives.
For data on the applied standards, refer to the “EU Declaration of
Conformity”.
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Electromagnetic compatibility
a) Power supply and metering
The quality of the power supply and current monitoring equipment will directly
affect the EMC performance of the entire system. Since Druck Limited has no
control over the installation of the transmitter it must remain the responsibility of
the user to ensure that the EMC performance of the system as a whole is
adequate.
In order to maintain good immunity to electromagnetic disturbances, the power
supply should filter any transient interference from the incoming line and
present a clean regulated DC supply for the transmitter. The monitoring
equipment should likewise be immune from the effects of electromagnetic
disturbances and not impart disruptive signals on the current loop.
The equipment is not intended for connection to a DC distribution network.
b) Cable type and earthing (grounding)
The choice of cable type should reflect the environment through which it is going
to run. Screened cable should always be used where electrical noise is present.
Good cabling practice will be reflected in signal quality.
The configuration tested had the cable screen and drain wire connected to local
earth (ground) at the monitoring end and was connected to the transmitter body.
The test configuration had the body of the transmitter connected to earth
(ground). This is the normal recommended configuration for good EMC
performance but it may not be suitable for intrinsically safe installations.
Pressure equipment directive
a) Pressure ranges > 1,000 bar (14,504 psi):
The transmitter has been assessed as a ‘pressure accessory’, Category I.
b) Pressure ranges ≤ 1,000 bar (14,504 psi):
The pressure transmitter has been assessed as a ‘pressure accessory’ meeting
the requirements for Sound Engineering Practice (SEP) in accordance with this
directive.
For product classification and regulatory information, refer to the following
publication:
K0581
Pressure Equipment Directive Alignment Statement
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Abbreviations
The abbreviations in this publication are as follows:
Note: Abbreviations are the same in the singular and plural.
a
A/D
ATEX
AWG
COSHH
D/A
DAC
DC
DIN
DIP
DPM
°C
°F
EEPROM
EMC
EU
FM
FS
g
HART®
HHC
IECEx
in
inH20
kg
lb
LCD
absolute pressure
analogue to digital
ATmosphères EXplosibles (explosive atmospheres)
American wire gauge
Control Of Substances Hazardous to Health
digital to analogue
digital to analogue convertor
direct current
Deutsche Industrie Norm
dual inline package
digital pressure module
degrees Celsius
degrees Fahrenheit
electrically erasable programmable read-only memory
electromagnetic compatibility
European Union
Factory Mutual Approvals
full-scale
gauge pressure
highway addressable remote transducer
hand held communicator
International Electrotechnical Commission Certification
Scheme for Explosive Atmospheres
inch (“)
inches of water
kilogram
pound
liquid crystal display
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LRL
LRV
m
mA
max
mbar
µF
mH
min
mm
mmH2O
MWP
MSDS
NAMUR
PCB
psi
PTFE
PV
RH
RTX
s
sg
TSL
URL
URV
V
V d.c.
Ω
lower range limit
lower range value
metre
milliampere
maximum
millibar
microfarad
millihenry
minimum/minute
millimetre
millimetre of water
maximum working pressure
materials specification data sheet
Normenarbeitsgemeinschaft für Mess- und Regeltechnik
(An association of users of process control technology)
printed circuit board
pound-force per square inch
polytetrafluoroethylene
primary variable
relative humidity
Rangeable Transmitter
seconds
specific gravity
terminal straight line
upper range limit
upper range value
volt
volt direct current
ohm
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Table of Contents
Page
Safety .........................................................................................................................
i
Abbreviations ............................................................................................................
iii
Table of Contents .....................................................................................................
v
1 DESCRIPTION ....................................................................................................... 1-1
1.1 Introduction ..................................................................................................................... 1-1
1.2
About the Electronics Housing ............................................................................... 1-1
1.3
Identification Codes ..................................................................................................... 1-3
2 TECHNICAL DATA ............................................................................................... 2-1
2.1 Environment Data ........................................................................................................ 2-1
2.2
Turn-on Time.................................................................................................................... 2-1
2.3
Sensor Fill Fluid .............................................................................................................. 2-1
2.4
HART® receive impedance data ............................................................................ 2-1
3 INSTALLATION ..................................................................................................... 3-1
3.1 Introduction ..................................................................................................................... 3-1
3.2
Special Tools and Equipment .................................................................................. 3-1
3.3
Location and Mounting .............................................................................................. 3-2
3.4
To Rotate the LCD Module Through 90° ............................................................. 3-2
3.5
To Rotate the Housing ................................................................................................ 3-3
3.6
Impulse Piping ................................................................................................................ 3-4
3.7
The Transmitter Pressure Connections .............................................................. 3-4
3.8
Liquid Level Measurement ....................................................................................... 3-7
3.9
Electrical Data ................................................................................................................ 3-8
3.10 System Checks ............................................................................................................... 3-11
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Page
4 OPERATION ........................................................................................................... 4-1
4.1 General .............................................................................................................................. 4-1
4.2
Manual Configuration Facilities ............................................................................. 4-2
4.3
Manual Configuration - Calibration ..................................................................... 4-3
4.4
Manual Configuration - LCD .................................................................................... 4-5
5 MAINTENANCE ..................................................................................................... 5-1
5.1 General .............................................................................................................................. 5-1
5.2
Fault Finding .................................................................................................................... 5-2
5.3
Returned Goods Procedure ...................................................................................... 5-4
Safety Precautions ....................................................................................................... 5-4
Important Notice ........................................................................................................... 5-4
Customer service .......................................................................................... Back cover
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Illustrations
Page
1-1
General view ................................................................................................................... 1-1
1-2
Transmitter schematic diagram ............................................................................ 1-2
3-1
LCD module - Turn thru 90° ..................................................................................... 3-2
3-2
Housing locking screws ............................................................................................. 3-3
3-3
Piping arrangements .................................................................................................. 3-6
3-4
Open tank level measurement ............................................................................... 3-7
3-5
Power and load requirements ................................................................................ 3-8
3-6
Electrical conduit configuration ............................................................................. 3-10
3-7
Transmitter connections ........................................................................................... 3-10
4-1
Display - Normal operation ...................................................................................... 4-2
4-2
Location of DIP switches and push buttons .................................................... 4-2
4-3
Calibration set-up for safe areas .......................................................................... 4-4
4-4
LCD - Range selection ................................................................................................ 4-5
4-5
Selection sequence - LCD configuration ........................................................... 4-6
5-1
Fault finding from the output signal .................................................................... 5-2
Tables
3-1
Wire resistance .............................................................................................................. 3-9
4-1
DIP switch operation ................................................................................................... 4-3
5-1
LCD alarm/error codes ............................................................................................... 5-3
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1
DESCRIPTION
1.1
Introduction
The Druck RTX 1000H series is a process pressure transmitter that measures the
pressure of liquid, gas or vapour and gives an analogue output proportional to the
applied pressure. The transmitter is available in a compact and lightweight metal
housing with facilities for direct mounting to pipeline installations. The type of
housing is specified in the order.
The transmitter uses the HART® protocol to give digital two-way communication.
The HART® protocol gives easy access to the process data and makes it possible to
adjust the transmitter operation. For example: to make accurate adjustments to
the zero and span. There are also push-buttons and switches on the electronics
module to adjust the transmitter operation.
1.2
About the Electronics Housing (Figure 1-1)
The electronics housing contains a Digital Pressure Module (DPM), electronics
module, connecting cables and the terminal block.
certification label (if fitted)
end-cap (with access
to the terminal block)
electrical conduit
entry (with optional
adaptor)
end-cap
(with access to the
electronics module)
electronics housing
rating plate
earth (ground)
terminal
housing locking
screw
process pressure
connection
Figure 1-1 General view
1-1
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RTX 1000H series User Manual
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Digital Pressure Module (DPM) - (Figure 1-2)
The sensing element in the DPM is constructed from a micro-machined silicon
diaphragm assembly bonded to a stainless steel or Hastelloy body. A Hastelloy
isolation diaphragm and silicone fluid isolates the sensing element from the
process media.
The sensor piezo-resistors, diffused into the surface of the silicon diaphragm,
produce a signal in response to applied pressure. The accuracy of the sensor
element is enhanced by measuring the residual errors over its operating
temperature and pressure range and applying digital compensation in the
transmitter electronics.
Electronics Module (Figure 1-2)
The electronics module uses microprocessor technology to give a compact circuit
with the minimum of components. The module produces an extremely stable signal
unaffected by changes in ambient temperature.
The HART® communication module gives digital two-way communications. The
HART® protocol gives easy access to the process data and makes it possible to
adjust the transmitter configuration from any point in the loop.
An optional LCD module shows the applied pressure value in two ways:
•
as a % of calibrated span represented by a bar graph
•
as a value in the applicable engineering units.
The LCD shows the Primary Variable (PV) value for the applied pressure. The LCD
value is not affected by the re-range facilities.
1.3
Identification Codes
The data sheet shows the identification codes for the transmitter. Before you install
the transmitter, use this table to make sure that the data on the transmitter is
correct.
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2
TECHNICAL DATA
Please refer to the data sheet for additional information.
2.1
Environment data
Service................................................................................................................ Liquid, gas or vapour
Pollution Degree ...................................................................................................................................... 2
Installation (over-voltage) Category................................................................................................II
2.2
Turn-on time
...................................................................................................................................................... 2 seconds
2.3
Sensor fill fluid
..................................................................................................................................................... Silicone oil
2.4
HART® receive impedance data
Transmitter equivalent resistance (Rx)................................................................................ 40 kΩ
Transmitter equivalent capacitance (Cx) ............................................................................ 13 nF
2-1
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3
INSTALLATION
WARNING:
IF THE EQUIPMENT IS CERTIFIED FOR USE IN EXPLOSIVE ATMOSPHERES, REFER
TO THE SAFETY SECTION AT THE BEGINNING OF THIS DOCUMENT FOR
ADDITIONAL DATA BEFORE PROCEEDING.
3.1
Introduction
The following procedures detail the correct installation of the unit.
Use qualified plant installation personnel and follow good engineering practice at
all times.
WARNINGS:
1.
2.
3.
3.2
OBSERVE APPROPRIATE LOCAL SAFETY INSTRUCTIONS.
BEFORE INSTALLATION, EXAMINE ALL FITTINGS AND EQUIPMENT FOR
DAMAGE AND MAKE SURE THAT ALL EQUIPMENT IS TO THE CORRECT
PRESSURE RATING.
USE THE IDENTIFICATION CODE ON THE TRANSMITTER TO MAKE SURE
THAT IT HAS THE CORRECT SPECIFICATION FOR THE INSTALLATION (REFER
TO DATA SHEET).
Special Tools and Equipment
The following special tools and equipment are required.
Note: Equivalent substitutes can be used.
Special tools
•
Applicable torque wrench
•
Druck UPS-III [to measure current output]
•
Multimeter [to measure loop resistance]
Materials
•
•
Piping - the necessary length and rating depends on the distances
Fittings to connect the above items including (but not limited to):
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•
•
- Pipe tee (steam or high temperature liquid)
- Pipe fittings
Pipe compound or Teflon tape (where local piping codes allow)
Loctite PST sealant
3.3
Location and Mounting (Figure 3-3)
Although designed to withstand harsh industrial environments, the transmitter
should be located to minimize the following:
•
Vibration
•
Ambient temperature fluctuations
•
Physical impact or shock
3.4
To Rotate the LCD Module Through 90° (Figure 3-1)
If applicable, use the following procedure to turn the optional LCD module in the
electronics housing.
LCD cable
connector
spacer (x4)
LCD
cable
access hole to release
the LCD module
Power
cables
DPM
cables
end-cap
screw/washer (x4)
1.
2.
3.
PCB
LCD module
Figure 3-1 LCD module - Turn through 90°
Isolate the power supply to the transmitter.
Unscrew the end-cap.
Insert a suitable tool into the access hole and release the first leg of the LCD
module from the PCB. Then carefully release the remaining legs from the
PCB.
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4.
10.
To disconnect the LCD cable from the PCB, release the clamp on the LCD
cable connector and carefully remove the cable.
Remove each screw/washer (x4).
Turn the PCB through 90° until the screw holes align with the spacers again.
Tighten each screw/washer (x4) back in position, but make sure that there is
not too much force on the cables, and that they are not caught.
Reconnect the LCD cable.
With the LCD module at the correct angle, push the module into the new
position until the legs are fully engaged with the PCB.
Attach the end-cap.
3.5
To Rotate the Housing (Figure 3-2)
5.
6.
7.
8.
9.
CAUTION:
Do not rotate the electronics housing on the transmitter more than 180 degrees
relative to the pressure connection, from the fully tightened position.
Two locking screws (hexagon socket screws) lock the electronics housing to the
sensor body. To rotate the housing, loosen both of the screws and rotate the
housing. When the angle is correct, tighten the screws.
Note: Do not remove the locking screws or allow them to damage the threaded
flamepath between the housing and the pressure connection.
locking screws
(hexagon socket screws)
Figure 3-2 Housing locking screws
3-3
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3.6
Impulse Piping (Figure 3-3)
The purpose of arranging impulse piping for the specific application is to maintain a
single phase of fluid in the piping and transmitter. Liquid applications should
maintain a liquid state and allow any air or gas formation to travel up and away
from the transmitter. Gas applications should allow the formation of liquids to drain
down and away from the transmitter.
The pipe or tubing used for connection must be rated for continuous operation at
the pipeline designed pressure and temperature. Threaded pipe fittings create
voids (where air can be trapped) and increase the possibility of leaks.
When installing the connecting tubing or impulse piping, the following apply:
•
Horizontally installed impulse piping must slope at least 75 mm per metre
(approximately 1” per foot). For liquid and steam applications the piping
must slope down towards the transmitter. For gas applications the piping
must slope down away from the transmitter.
•
Impulse piping should be kept as short as possible and maintained at
ambient temperature avoiding fluctuations and gradients.
•
Installations outdoors for liquid or saturated gas service may require
insulation and heat tracing to prevent freezing.
•
For installations where the transmitter is more than 1.8 m (6 feet) from the
tapping, the impulse piping must be supported to prevent sagging and
vibration.
•
Impulse piping must be located in protected areas or against walls or
ceilings. If routed across a floor, protective coverings or kick plates must be
used. High temperature piping or equipment should be avoided.
•
Appropriate pipe sealing compound rated at the design piping temperature
must be used on all threaded connections. When making threaded
connections between stainless steel fittings, Loctite PST Sealant is
recommended.
3.7
The Transmitter Pressure Connections
The recommended connection uses a two-valve manifold connected between the
transmitter and the process pressure. Before connecting the transmitter remove
the protection caps and carefully inspect the sealing face and threaded bore of the
connection for damage.
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Liquid service connections (Figure 3-3a)
Liquid measurement connections should be made to the side of the process line to
avoid deposits of sediment. The transmitter should be mounted beside or below the
connection so that gases vent into the process line.
Gas service connections (Figure 3-3b)
Gas measurement connections should be made to the top or side of the process
line. The transmitter should be mounted beside or above the connection allowing
any liquid to drain into the process line.
Steam service connections (Figure 3-3c)
Steam measurement connections should be made to the side of the process line.
The transmitter should be mounted below the connection so that the piping
remains filled with condensate. Live steam must not come into contact with the
transmitter; to prevent this the lines should be filled with water or condensate.
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two-valve
manifold
two-valve
manifold
(a) Liquid service
two-valve
manifold
(b) Gas service
set length for
cooling
plugged tee-piece
for sealing fluid
(water, condensate)
(c) Steam service
Figure 3-3 Piping arrangements
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3.8
Liquid Level Measurement
Gauge pressure transmitters can be used to measure liquid level in an open or
vented tank by measuring the hydrostatic pressure head. The head pressure can
be calculated by multiplying the liquid height above the transmitter diaphragm by
the specific gravity of the liquid.
The tank's volume and shape does not affect the head pressure. If the transmitter is
mounted below the zero point (minimum level) of the measured range, zero
suppression will be required.
maximum level
20
sg = 1.1
zero
suppression
5000 mm/200”
mA
4
minimum level
0
1100/44
1000 mm/40”
6600/264
mmH2O/inH2O
Figure 3-4 Open tank level measurement
Calculations
Min. level
=
(1000 x 1.1) mmH2O
(40” x 1.1) inH2O
=
1100 mmH2O
44” inH2O
=
([1000 + 5000] x 1.1) mmH2O
([40 + 200] x 1.1) inH2O
=
(6000 x 1.1) mmH2O
(240 x 1.1) inH2O
=
6600 mmH2O
264 inH2O
Range
=
1100 to 6600 mmH2O
44 to 264 inH2O
(Span
=
5500 mmH2O)
220 inH2O
Max level
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3.9
Electrical Data
WARNING:
IF THE EQUIPMENT IS CERTIFIED FOR USE IN EXPLOSIVE ATMOSPHERES, REFER
TO THE SAFETY SECTION AT THE BEGINNING OF THIS DOCUMENT FOR
ADDITIONAL DATA BEFORE PROCEEDING.
WARNING:
SWITCH OFF AND ISOLATE THE POWER SUPPLY BEFORE CONNECTING OR
DISCONNECTING THE TRANSMITTER.
CAUTIONS:
1.
The transmitter uses DC power in a 2-wire system to control current
through a resistive load.
2.
Do not apply more than 35 Volts to the loop circuit. The transmitter may
be damaged.
General
The electrical installation must comply with local wiring codes and standards. To
get the full performance from the transmitter, carefully choose the wiring scheme
to be used and take care connecting the transmitter.
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Power and maximum load (Figure 3-5)
e
Note:
re
sis
ta
nc
Ma
xim
um
Resistive Loop Load - Ohms
The total loop resistance must include the connection wire resistance.
For HART® operation, the
minimum loop resistance
is 250 Ohm.
Operating
region
No HART®
Operation
Loop DC Power - Volts
Figure 3-5 Power and load requirements
Wire selection (Table 3-1)
To get the best EMC performance, use shielded twisted pair cable for the field
wiring.
•
Select a wire gauge for the required total length so the transmitter operates
within the load requirements.
•
When using external power supplies, make sure the connection polarity
allows current to flow into the +ve terminal and out of the -ve terminal. Refer
to Figure 3-7.
Table 3-1 Wire resistance
AWG
Wire Diameter
Loop Resistance
Inches
mm
Ohms/Foot
Ohms/Metre
16
0.0508
1.291
0.0082
0.0264
18
0.0403
1.024
0.0128
0.0418
20
0.0320
0.812
0.0204
0.0666
22
0.0254
0.644
0.0322
0.1060
24
0.0201
0.511
0.0514
0.1680
Note: The typical values for resistance per length are doubled as the circuit is a direct
current loop.
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Electrical conduit (Figure 3-6)
Use electrical conduit in accordance with local wiring codes. The electronics
housing has two M20 threaded holes for electrical conduit connections and may be
supplied with a thread adaptor. The configuration in Figure 3-6 prevents moisture
getting into the housing. If conduit is not used, use the correct cable gland/plugs to
seal the housing.
Plug
min: 50 mm
(2")
Flex Conduit
Conduit
Tee
To Drain
Figure 3-6 Electrical conduit configuration
Electrical connections (Figure 3-7)
The transmitter is a 2-wire loop powered device. The marks +ve and -ve identify the
polarity of the connection terminals.
A label in the transmitter shows how to use the third terminal to measure the
output current from the transmitter. In hazardous (classified) areas, do not use this
third terminal.
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250 Ω
HART® - HHC
Note:
For HART® operation, the
minimum loop resistance
is 250 Ohm.
Power
supply
Figure 3-7 Transmitter connections
Because the transmitter circuit is isolated from the housing, one of the signal wires
(+ve or -ve) can be earthed (grounded) if necessary. This may not be appropriate in
hazardous (classified) areas.
3.10 System Checks
Leak test
Before the system is filled and/or commissioned, do a leak test with compressed air
(or other inert compressed gas) or water. The minimum test pressure must be equal
to the normal operating pressure. The maximum pressure is the MWP.
•
Apply pressure at a convenient point on the system.
•
Apply an applicable leak test solution to the impulse piping, valves,
transmitter connections and joints.
•
Look for a continuous stream of bubbles.
•
Bleed the system.
•
Do all the necessary repairs, and test the system again.
•
Return the system to the original configuration.
Transmitter test
Connect the necessary instruments to monitor the pressure signal. If necessary,
connect a milliammeter to measure the output from the transmitter.
•
Apply power to the transmitter.
•
Apply the applicable pressure.
•
Monitor the pressure signal.
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Refer to the 'Operation' section for the procedures to set up and operate the
transmitter.
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4
OPERATION
WARNING:
IF THE EQUIPMENT IS CERTIFIED FOR USE IN EXPLOSIVE ATMOSPHERES, REFER
TO THE SAFETY SECTION AT THE BEGINNING OF THIS DOCUMENT FOR
ADDITIONAL DATA BEFORE PROCEEDING.
4.1
General
CAUTION:
DO NOT over-pressurise the system.
Pressure ranges
The transmitter label shows the factory calibrated range and the Maximum
Working Pressure (MWP).
Start up procedure
When power is supplied to the transmitter, the output is set to the applicable alarm
level (Refer to Table 4-1). When the start up sequence is complete, the output
changes to give the applicable process value.
During start up, the display (if applicable) shows the parameter data for the
transmitter. This includes:
1.
SOFTWARE: Software version
2.
UNITS: Pressure units
3.
URV: Upper Range Value + applicable units
4.
LRV: Lower Range Value + applicable units
5.
TRANSFER: Shows that the transmitter uses a linear transfer function
6.
DAMPING: Damping value in seconds
7.
EE PROTECT: Write protect status (on/off)
8.
ALARM LEVEL: Specified alarm level (high: > 21 mA, low: < 3.6 mA)
When the start up sequence is complete, the display shows the PV value for the
applied pressure and the applicable units (Figure 4-1).
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Bar graph
(0%: 4 mA, 100%: 20 mA)
PV value
Applicable units
Figure 4-1 Display - Normal operation
Alarm/Error conditions
Refer to the 'Maintenance' section.
4.2
Manual Configuration Facilities (Figure 4-2)
The manual configuration facilities (DIP switches and push buttons) are in the
electronics module. To get access to the electronics module:
1.
Remove the end-cap (with access to the electronics module).
2.
If applicable, release the LCD module to get access to the DIP switches.
- Insert a suitable tool into the access hole, and release the first leg of the
LCD module from the PCB. Then carefully release the remaining legs from
the PCB.
DIP switches
1 to 4
Access hole to release
the LCD module
Push buttons:
- span (S)
- zero (Z)
Optional LCD module with
push buttons span (S) and
zero (Z)
PCB
Figure 4-2 Location of DIP switches and push buttons
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Table 4-1 DIP switch operation
DIP
Switch
Function
Set ON
Set OFF
1
Write Protection
To prevent accidental
changes to the EEPROM
values.
1) To change values for span
and zero.
2) To set up the display - if
applicable.
2
Alarm level
To use the high NAMUR alarm
(> 21 mA) when there is a
transmitter fault.
To use the low NAMUR alarm
(< 3.6 mA) when there is a
transmitter fault.
3
Damping
To use the ON_Damping
factor. Default = 1 s
To use the OFF_Damping
factor. Default = 0.1 s
4
Not used
-
-
4.3
Manual Configuration - Calibration
To get accurate results, do the calibration in conditions where the pressure and
temperature are stable.
Equipment
•
•
A precision pressure calibrator such as the Druck DPI611/612 or
DPI620 series. The accuracy of the supplied pressure must be better than
±0.075%.
In safe areas, a 12 to 35 Volt DC power supply (separate or part of another
system).
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•
Fittings and tubing as required.
Excitation voltage and 4
mA to 20 mA signal
Transmitter
Precision Pressure
Calibrator
Figure 4-3 Calibration set-up for safe areas
Calibration ranges
Set any span value from 1 - 100% of the URL. Refer to the 'Technical Data' section.
Procedure to adjust the range (No LCD)
1.
2.
Set DIP switch 1 to OFF (write protect - OFF).
To set the pressure for the Lower Range Value (LRV):
a. Press the S and Z buttons together, and supply the LRV pressure.
b. To set the LRV, press the Z button.
3.
To set the pressure for the Upper Range Value (URV):
a. Press the S and Z buttons together, and supply URV pressure.
b. To set the URV, press the S button.
4.
To prevent accidental changes to the new values, set DIP switch 1 to ON.
To leave the set up procedure without saving a value:
•
Press the S and Z buttons together OR
•
Do not press the buttons for 25 seconds.
If a value is not in the applicable range, the value is ignored.
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Procedure to adjust the range (LCD option) - (Figure 4-4)
Note: The push buttons on the LCD module only work when it is attached to the PCB.
1.
2.
Set DIP switch 1 to OFF (write protect - OFF).
Press S and Z together:
3.
Press Z:
Figure 4-4 LCD - Range selection
4.
To set the pressure for the Lower Range Value (LRV):
a. Supply the applicable LRV pressure.
b. Press the Z button.
5.
To set the pressure for the Upper Range Value (URV):
a. Supply the applicable URV pressure.
b. Press the S button.
6.
To prevent accidental changes to the new values, set DIP switch 1 to ON.
Note: The LCD shows the PV value for the applied pressure. The LCD value is not
affected by the re-range facilities. Refer to the 'Description' section.
To leave the set up procedure without saving a value:
•
Press the S and Z buttons together OR
•
Do not press the buttons for 25 seconds.
If a value is not in the applicable range, the display shows error code 00. The
specified value is ignored.
4.4
Manual Configuration - LCD (Figure 4-5)
There are three items to set up for the optional LCD: the pressure units, the decimal
point position, and the display contrast.
Note: The push buttons on the LCD module only work when it is attached to the PCB.
1.
2.
Set DIP switch 1 to OFF (write protect - OFF).
Press S and Z together:
3.
Press S:
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Figure 4-5 Selection sequence - LCD configuration
4.
UNITS: Use the S and Z buttons to step through the available units.
Wait 5 seconds or press S and Z together to go to the DECIMAL display.
5.
DECIMAL: Use the S and Z buttons to move the decimal position. There is a
maximum number of decimal places for each unit.
Wait 5 seconds or press S and Z together to go to the CONTRAST display.
6.
CONTRAST: Use the S and Z buttons to adjust the contrast.
Wait 5 seconds or press S and Z together to return to normal operation.
To prevent accidental changes to the new values, set DIP switch 1 to ON.
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5
MAINTENANCE
WARNING:
IF THE EQUIPMENT IS CERTIFIED FOR USE IN EXPLOSIVE ATMOSPHERES, REFER
TO THE SAFETY SECTION AT THE BEGINNING OF THIS DOCUMENT FOR
ADDITIONAL DATA BEFORE PROCEEDING.
5.1
General
The transmitter contains no moving parts and requires a minimum of maintenance.
Visual inspection
•
Inspect the transmitter for damage and corrosion. Any damage to the
transmitter must be assessed. If the housing is no longer sealed against
water and/or dust, the transmitter must be replaced.
Cleaning
•
Clean the transmitter case with a damp lint-free cloth and mild detergent.
•
Corrosion must be removed and the area of corrosion cleaned and, if
necessary, neutralised.
•
If the product has been in contact with hazardous or toxic materials, obey all
the applicable COSHH or MSDS references and precautions when handling.
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5.2
Fault Finding
If the measured pressure goes above URV or goes below LRV, the output signal will
saturate at the following values:
LRV fault
indication
←
2 mA
3.6 mA
-2.5%
not
allowed
3.8 mA
-1.25%
under
range
- URV
normal signal range
4 mA
0.00%
over
range
not
allowed
20 mA 20.5 mA
21 mA
100% 103.15% 106.25%
fault
indication
22 mA
→
Figure 5-1 Fault finding from the output signal
Fault indications
If there is a specified fault condition, the transmitter output changes to the
specified NAMUR alarm level. The alarm level is set by the position of DIP switch 2
(refer to table 4-1.
If applicable, the optional display shows an alarm code to help identify the fault.
Table 5-1 shows some of the codes. If there are several fault conditions, the alarm
code is the sum of all the applicable codes.
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Table 5-1 LCD alarm/error codes
Code
Possible cause
To correct the error
Too much positive or negative pressure.
Supply pressure in the specified limits for
the device.
DPM error
Power off, wait 25 seconds, then power
on again.
DPM data not received
Power off, wait 25 seconds, then power
on again.
LCD adjustment has loosened the DPM
cable connection on the PCB.
Examine the DPM cable connection
(Figure 3-1).
LCD adjustment has loosened the DPM
cable connection on the PCB.
Examine the DPM cable connection
(Figure 3-1).
Configuration error. The range is not in
the specified limits for the device.
Refer to section 2 for the specified range
limits.
Configuration error. DIP switch 1 set to ON
(Write protect).
Set DIP switch 1 to OFF, then follow the
procedures in Section 4.
02
ALARM
04
ALARM
08
ALARM
00
ERROR
If you cannot identify the code or the fault condition does not change, contact an
approved service agent.
Over/under range
If the measured pressure goes above or below the set range of the transmitter, the
electronics module causes the transmitter output to change.
When the measured pressure is under range, the transmitter output continues
below the 4.0 mA level until it reaches 3.8 mA (Figure 5-1). When the measured
pressure is over range, the transmitter output continues above the 20.0 mA level
until it reaches 20.5 mA (Figure 5-1).
If applicable, the optional display will also show a flashing pressure value.
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5.3
Returned Goods Procedure
To repair or calibrate the transmitter, return it to the applicable GE Service
Department.
Please contact our Service Department, and get a Return Authorisation number.
Please supply these details:
Product (i.e. RTX 1000H)
Pressure range
Serial number
Details of defect/work to be undertaken
Calibration traceability requirements
Operating conditions
Safety Precautions
To prevent possible injury when we receive the product, you must also tell us if the
product has been in contact with hazardous or toxic materials. Please supply the
applicable COSHH or MSDS references and precautions.
Important Notice
Service or calibration by unauthorised sources will affect the warranty and may not
guarantee further performance. If the equipment has “Hazardous (Classified) area”
approval, the approval will also be invalid.
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Customer service
Visit our web site at:
www.gemeasurement.com
Publication: 111M3356 Revision © 2016 General Electric Company. All rights reserved.
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