OPERATING MANUAL PRO-series Model C3 Conductivity

OPERATING MANUAL PRO-series Model C3 Conductivity
OPERATING MANUAL
PRO-series Model C3
Conductivity Transmitter
(for conductivity, resistivity, and TDS measurement)
Rev. 1-202
1
PRO-series Model C3 Conductivity Transmitter
This operating manual and other GLI operating manuals
are available on GLI’s web site at gliint.com when viewed
using Adobe’s free Acrobat reader. To get this reader, link
to Adobe through GLI’s web site or visit Adobe’s web site
at adobe.com.
WARRANTY
GLI International, Inc. warrants the PRO-series Model C3 to be free from defects
in material or workmanship for a period of 2 years (24 months) from the date of
shipment of this product from our facility. A warranty claim will not be honored if
defects are not reported within the warranty period, or if GLI International determines that defects or damages are due to normal wear, misapplication, lack of
maintenance, abuse, improper installation, alteration, or abnormal conditions.
GLI International’s obligation under this warranty shall be limited to, at its option,
replacement or repair of this product. The product must be returned to GLI International, freight prepaid, for examination. The product must be thoroughly
cleaned and any process chemicals removed before it will be accepted for replacement or repair. GLI International’s liability shall not exceed the cost of the
product. Under no circumstances will GLI International be liable for any incidental or consequential damages, whether to person or property. GLI International
will not be liable for any other loss, damage or expense of any kind, including
loss of profits, resulting from the installation, use, or inability to use this product.
PRO-series Model C3 Conductivity Transmitter
2
Rev. 1-202
Declaration of Conformity
according to ISO/IEC Guide 22 and EN 45014
Manufacturer’s Name:
GLI International, Inc.
Manufacturer’s Address:
9020 West Dean Road
P.O. Box 245022
Milwaukee, Wisconsin 53224, USA
declares that the products:
Product Names:
PRO-series pH/ORP Transmitter
PRO-series Dissolved Oxygen Transmitter
PRO-series Electrodeless Conductivity Transmitter
PRO-series Contacting Conductivity Transmitter
PRO-series Flow Transmitter
Model Numbers:
PRO-P3xxx, PRO-D3xxx, PRO-E3xxx, PRO-C3xxx, PRO-F3xxx
conforms to the following Product Specifications:
EMC:
EN 50081-2 : 1993
Generic Emission Standard (Industrial Environment)
EN 55011 : 1998 / CISPR 11 : 1999
Group 1, Class A
EN 61000-6-2 : 1999
Generic Immunity Standard (Industrial Environment)
EN 61000-4-2 : 1995 - ESD Immunity
4 kV CD, 8kV AD
EN 61000-4-3 : 1997 - Radiated Immunity
10 V/m, 80% AM (1 kHz)
EN 61000-4-4 : 1995 - EFT/B Immunity
1.0 kV Signal & Power Lines
EN 61000-4-6 : 1996 - Conducted Immunity
10 V, 80% AM (1 kHz)
Supplementary Information:
The products herewith comply with the requirements of the following directives and carry the CE marking
accordingly:
EMC Directive 89/336/EEC
Products were tested in typical configurations. Specific test configurations and results are published in
L.S. Compliance’s Test Report Numbers: 301140, 301222, 301256 and EMC Testing Wisconsin’s Test
Report Number 00340.
These devices comply with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
These devices comply with U.S. UL Standard 1604 (USL) and Canadian National Standard C22.2 No. 213M1987 (CNL). All devices are UL Listed (Control Number 9NX6) and hold a Class I, Division 2, Groups A,
B, C, and D Hazardous Locations rating.
For Compliance Information ONLY, contact:
Product Regulations Manager
GLI International
9020 West Dean Road
Milwaukee, Wisconsin 53224, USA
Rev. 1-202
3
PRO-series Model C3 Conductivity Transmitter
IMPORTANT SAFETY INFORMATION
Please read and observe the following:
• The transmitter can be located in a Class I, Division 2, Group A, B, C or D hazardous area.
• Since the transmitter is powered by only low DC voltage, it is completely safe to handle.
• Install the transmitter in accordance with relevant local codes and instructions contained in this
operating manual. Also, note and comply with the transmitter’s technical specifications and ratings.
• Whenever it appears that transmitter safety is questionable, disable the transmitter to ensure against
any unintended operation. For example, an unsafe condition is likely when:
1) The transmitter appears visibly damaged.
2) The transmitter fails to operate properly or provide the intended measurements.
3) The transmitter has been stored for long periods at temperatures above 158°F (70°C).
• Only qualified personnel should perform wiring or repairs, and only when the transmitter is not powered.
HELPFUL IDENTIFIERS
In addition to information on installation and operation, this instruction manual may contain
WARNINGS pertaining to user safety, CAUTIONS regarding possible instrument malfunction,
and NOTES on important, useful operating guidelines.
WARNING:
A WARNING LOOKS LIKE THIS. IT WARNS YOU OF THE
POTENTIAL FOR PERSONAL INJURY.
CAUTION:
A CAUTION LOOKS LIKE THIS. IT ALERTS YOU TO POSSIBLE
INSTRUMENT MALFUNCTION OR DAMAGE.
☞
NOTE: A note looks like this. It alerts you to important operating
information.
PRO-series Model C3 Conductivity Transmitter
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Rev. 1-202
CONDENSED OPERATING INSTRUCTIONS
This manual contains details for all operating aspects of the instrument. The following condensed instructions are provided to assist you in getting the instrument started up and operating as quickly as
possible. These condensed instructions only pertain to basic conductivity measurement operation. To measure resistivity or TDS, or to use specific features of the instrument, refer to the appropriate
sections in this manual for instructions.
A. CONNECTING SENSOR/CONFIGURING TEMPERATURE ELEMENT TYPE
1. After properly mounting the transmitter (PART TWO, Section 2), connect the GLI contacting
conductivity sensor, matching wire colors to terminals as indicated:
Sensor Wire Colors
Red
---Inner Shield
White
Blue
---Black
Outer Shield (see Note)
Connect To TB2
Terminal 1
Terminal 2 (unused)
Terminal 3
Terminal 4
Terminal 5
Terminal 6 (unused)
Terminal 7
Earth Ground
NOTE: For systems not requiring CE
compliance and lacking an earth
ground, connect the outer shield
to Terminal 3 on TB2.
2. The transmitter is factory-set for automatic temperature compensation using the Pt 1000 ohm temperature element built into GLI contacting conductivity sensors. If you want fixed MANUAL
temperature compensation, change the temperature element type to “MANUAL” and enter a temperature. For details, see PART THREE, Section 3.2, subheading “Select TEMP ELEMENT Type.”
B. CONNECTING DC POWER
Refer to PART TWO, Section 3.2, 3.3, 3.4, or 3.5 to connect DC power to the transmitter.
C. CALIBRATING THE TRANSMITTER
The transmitter must be calibrated so that measured values will correspond to actual process values.
It can be traditionally “wet” calibrated. However, since measured conductivity is greatly affected by
small changes in temperature, GLI strongly recommends using its simple DRY-CAL method for
highest measuring accuracy of conductivity and temperature. Besides, DRY-CAL is actually a normal
part of configuring the sensor characteristics during initial startup, and DRY-CAL eliminates the
need for conductivity reference solutions. This method also automatically sets the transmitter
measuring range to match the inherent range of the sensor’s cell constant. For more details about
the benefits of DRY-CAL, refer to the “Calibration Tip!” in PART THREE, Section 4.1.
NOTE: DRY-CAL eliminates the need for periodic re-calibration! The only requirement, depending
on the application, may be to periodically clean the sensor. Only when the sensor is replaced is it necessary to perform a new DRY-CAL calibration.
Calibration Tip! Each contacting conductivity sensor has a unique zero point and span. Consequently, when calibrating a sensor for the first time, always zero it according to step 1. Zeroing
provides the best possible measuring accuracy.
DRY-CAL calibration, routinely attained while configuring the transmitter for sensor characteristics,
requires entry of the sensor’s GLI-certified “CELL K” value and temperature “T FACTOR” which are
unique for every sensor.
(continued on next page)
Rev. 1-202
5
PRO-series Model C3 Conductivity Transmitter
CONDENSED OPERATING INSTRUCTIONS
C. CALIBRATING THE TRANSMITTER -- (continued)
1. Zero the sensor if it is being calibrated for the first time. If not, disregard this step and perform
steps 2 through 17.
Zeroing Tip! If the “ZERO: CONFIRM FAILURE?” screen appears at any time during zeroing, press ENTER key to confirm. Then, use the or key to select between “CAL: EXIT”
or “CAL: REPEAT” and do one of the following:
× Ø
• With the “ZERO? (CAL: EXIT)” screen selected, press ENTER key. After the “ZERO:
CONFIRM ACTIVE?” screen appears, press ENTER key again to return the analog output to its active state (MEASURE screen appears).
• With the “ZERO? (CAL: REPEAT)” screen selected, press ENTER key to repeat zeroing.
A. Make sure that the sensor is dry before zeroing.
B. Press MENU key to display a “MAIN MENU” screen. If the
showing, use or key to display it.
× Ø
C. Press ENTER key to display
.
D. Press ENTER key again to display
E. Press
screen is not
.
Ø key once to display
.
F. Press ENTER key to display the “ZERO: IN DRY AIR?” screen.
G. With the dry sensor held in air, press ENTER key again to start automatic zeroing. (During
zeroing, the analog output is automatically “held” at the last measured value.)
H. After the “ZERO: CONFIRM CAL OK?” screen appears, press ENTER key to end zeroing.
I.
After the “ZERO: CONFIRM ACTIVE?” screen appears, press ENTER key to return the
analog output to its active state (MEASURE screen appears).
2. Press MENU key to display
3. Press
.
Ø key once to display
.
4. Press ENTER key to display
5. Press
Ø key until
.
screen appears.
6. Press ENTER key to display
7. Press
Ø key until
.
screen appears.
(continued on next page)
PRO-series Model C3 Conductivity Transmitter
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Rev. 1-202
CONDENSED OPERATING INSTRUCTIONS
C. CALIBRATING THE TRANSMITTER -- (continued)
8. Press ENTER key to display
.
9. Press ENTER key again to display a cell category selection screen like
. Use
and keys to select the nominal cell category that corresponds to the sensor’s GLI-certified
“CELL K” value shown on a label attached to the sensor cable or to the inside cover of its optional junction box. Then press ENTER key to enter the selection.
×
Ø
screen re-appears, press
10. After the
Ø key once to display
.
11. Press ENTER key to display a “CELL K” value screen like
. Adjust the disand
keys to
played value to exactly match the sensor’s GLI-certified “CELL K” value. (Use
select digit, and and keys to adjust its value.) Then press ENTER key to enter the value.
×
Ö
Ø
12. After the
screen re-appears, press ESC key once to display
Ø key once to display
.
14. Press ENTER key to display
.
Ø key once to display
.
13. Press
15. Press
Õ
.
16. Press ENTER key to display a “T FACTOR” value screen like
. Adjust the
displayed value to exactly match the sensor’s GLI-certified “T FACTOR.” (Use and
keys to
select digit, and and keys to adjust its value.) Then press ENTER key to enter the value.
×
Ö
Ø
Õ
17. After the
screen re-appears, press MENU key once and then ESC key once
to display the MEASURE screen.
This completes GLI’s DRY-CAL calibration. The transmitter is now ready to measure conductivity.
To change the display format of the MEASURE screen (for example, from 0-2000 µS/cm to
0.000-2.000 mS/cm), refer to PART THREE, Section 3.2, subheading “Select DISPLAY FORMAT.”
NOTE: If the values you intend to measure are above the transmitter’s fixed measuring range (not
its selected display format), use a different sensor that has the appropriate nominal cell constant. For a listing of sensor cell constants and their inherent measuring ranges, see TABLE
A in PART THREE, Section 3.2, under subheading “Select DISPLAY FORMAT.”
D. COMPLETING TRANSMITTER CONFIGURATION
To further configure the transmitter to your application requirements, use the appropriate
CONFIGURE screens to make selections and “key in” values. Refer to PART THREE, Section 3 for
complete configuration details.
Rev. 1-202
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PRO-series Model C3 Conductivity Transmitter
PRO-series Model C3 Conductivity Transmitter
8
Rev. 1-202
TABLE
OF
CONTENTS
PART ONE - INTRODUCTION
SECTION 1
GENERAL INFORMATION
1.1 Capability Highlights ............................................................................. 13
1.2 Transmitter Safety ................................................................................. 14
1.3 Retained Configuration Values ............................................................. 14
1.4 Transmitter Serial Number .................................................................... 14
1.5 EMC Conformance ................................................................................ 14
SECTION 2
SPECIFICATIONS....................................................................................15-16
PART TWO - INSTALLATION
SECTION 1
UNPACKING ................................................................................................. 17
SECTION 2
MECHANICAL REQUIREMENTS
2.1 Location................................................................................................. 17
2.2 Wall and Pipe Mounting ........................................................................ 18
2.3 Panel Mounting ..................................................................................... 19
2.4 Integral Sensor Mounting ...................................................................... 20
SECTION 3
ELECTRICAL CONNECTIONS
3.1 GLI Contacting Conductivity Sensor ..................................................... 22
3.2 Two-wire Hookup .................................................................................. 23
3.3 Three-wire Hookups (load sinking or load sourcing
with or without RS-485 serial communication) ............................23-25
3.4 Four-wire Hookups (with or without RS-485
serial communication) .................................................................25-26
3.5 Monitor Mode Hookups (without current loop and
with or without RS-485 serial communication) ................................. 27
PART THREE - OPERATION
SECTION 1
USER INTERFACE
1.1 Display .................................................................................................. 28
1.2 Keypad .............................................................................................28-29
1.3 MEASURE Screen (normal display mode) ............................................ 30
SECTION 2
MENU STRUCTURE
2.1 Displaying Main Branch Selection Screens .......................................... 31
2.2 Displaying Top-level Menu Screens...................................................... 32
2.3 Displaying Submenu Screens ............................................................... 33
2.4 Adjusting Edit/Selection Screen Values ................................................ 33
2.5 Entering (Storing) Edit/Selection Screen Values/Choices..................... 33
Rev. 1-202
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PRO-series Model C3 Conductivity Transmitter
TABLE OF CONTENTS (continued)
SECTION 3
TRANSMITTER CONFIGURATION
3.1 Selecting LANGUAGE to Operate Transmitter...................................... 34
3.2 Configuring Sensor Characteristics:
SELECT MEASURE (conductivity, resistivity or TDS) ................34-35
Select DISPLAY FORMAT ..........................................................35-36
SET FILTER Time............................................................................ 36
Select Temperature COMPENSATION.......................................36-37
CONFIG TDS Measurement (configuration
not needed for other measurements) ....................................37-38
CONFIG LINEAR Temperature Compensation (configuration
not needed for other compensation methods) .......................38-39
ENTER NOTE (top line of MEASURE screen)................................. 39
SELECT CELL K (sensor’s GLI-certified “K” value) ......................... 40
Select TEMP ELEMENT Type ....................................................40-41
SET T FACTOR (sensor’s GLI-certified “T” factor) .....................41-42
3.3 SET °C OR °F (temperature display format) ......................................... 43
3.4 Configuring Analog Output:
SET PARAMETER (representation) ................................................ 43
SET 4 mA and 20 mA VALUES (range expand) .............................. 44
SET FILTER Time............................................................................ 44
SET FAIL LEVEL Mode (off, 4 mA or 20 mA) .................................. 45
3.5 SET PASSCODE (feature enabled or disabled) ................................... 46
3.6 Configuration Setting Summary (ranges/choices and defaults) .......47-48
SECTION 4
TRANSMITTER CALIBRATION
4.1 Important Information .......................................................................49-50
4.2 ZERO Procedure (first-time sensor calibration only)........................50-51
4.3 DRY-CAL Method (highly recommended):
SELECT CELL K (sensor’s GLI-certified “K” value) ....................51-52
SET T FACTOR (sensor’s GLI-certified “T” factor) .....................52-53
4.4 1 POINT SAMPLE Method (wet calibration).....................................53-56
4.5 Analog Output Calibration ................................................................56-57
SECTION 5
TEST/MAINTENANCE
5.1 STATUS Check (transmitter and sensor) .........................................58-59
5.2 HOLD OUTPUT..................................................................................... 59
5.3 OUTPUT Test Signal........................................................................59-60
5.4 Firmware (EPROM VERSION) Check ................................................... 60
5.5 SELECT SIM Measurement .............................................................60-61
5.6 SIM SENSOR Setting............................................................................ 61
5.7 RESET CONFIGURE Values to Factory Defaults............................61-62
5.8 RESET CALIBRATE Values to Factory Defaults .................................. 62
PRO-series Model C3 Conductivity Transmitter
10
Rev. 1-202
TABLE OF CONTENTS (continued)
PART FOUR - SERVICE AND MAINTENANCE
SECTION 1
GENERAL INFORMATION ........................................................................... 63
SECTION 2
PRESERVING MEASUREMENT ACCURACY
2.1 Keeping Sensor Clean .......................................................................... 63
2.2 Keeping Transmitter Calibrated ............................................................ 63
2.3 Avoiding Electrical Interference............................................................. 63
SECTION 3
TROUBLESHOOTING
3.1 Ground Loops:
Determining if Ground Loop Exists .................................................. 64
Finding Source of Ground Loop....................................................... 65
3.2 Isolating Measuring System Problem:
Checking Electrical Connections ..................................................... 65
Verifying Sensor Operation.............................................................. 65
Verifying Transmitter Operation ..................................................65-66
Verifying Sensor Interconnect Cable Integrity ................................. 66
SECTION 4
TRANSMITTER REPAIR/RETURN
4.1 Customer Assistance............................................................................. 67
4.2 Repair/Return Policy ............................................................................. 67
Rev. 1-202
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PRO-series Model C3 Conductivity Transmitter
TABLE OF CONTENTS (continued)
ILLUSTRATIONS
Figure 1-1
EMC Diagram ..................................................................................................................14
Figure 2-1
Wall and Pipe Mounting Details .......................................................................................18
Figure 2-2
Panel Mounting Details ....................................................................................................19
Figure 2-3
Integral Sensor Mounting Details......................................................................................20
Figure 2-4
Transmitter Terminal Designations...................................................................................21
Figure 2-5
Connecting GLI Contacting Conductivity Sensor ..............................................................22
Figure 2-6
Two-wire Hookup .............................................................................................................23
Figure 2-7
Three-wire Hookup -- Load Sinking ..................................................................................24
Figure 2-8
Three-wire Hookup -- Load Sinking with RS-485 Serial Communication...........................24
Figure 2-9
Three-wire Hookup -- Load Sourcing................................................................................25
Figure 2-10 Three-wire Hookup -- Load Sourcing with RS-485 Serial Communication.........................25
Figure 2-11 Four-wire Hookup without RS-485 Serial Communication ................................................26
Figure 2-12 Four-wire Hookup with RS-485 Serial Communication .....................................................26
Figure 2-13 Monitor Mode Hookup (without Current Loop) -- without RS-485 Serial Communication...27
Figure 2-14 Monitor Mode Hookup (without Current Loop) -- with RS-485 Serial Communication........27
Figure 3-1
Transmitter Keypad..........................................................................................................29
TABLES
TABLE A
Sensor Cell Constants and Measuring Ranges.................................................................35
TABLE B
Transmitter Configuration Settings (Ranges/Choices and Defaults).............................47-48
TABLE C
Conductivity Reference Solutions ....................................................................................54
TABLE D
Full-scale Equivalent Test Resistor Values.......................................................................66
PRO-series Model C3 Conductivity Transmitter
12
Rev. 1-202
PART ONE - INTRODUCTION
SECTION 1 - GENERAL INFORMATION
PART ONE - INTRODUCTION
SECTION 1
GENERAL INFORMATION
1.1 Capability Highlights
Sensor Input
MEASURE Screen
The transmitter can be used with any GLI Model 3400series contacting conductivity sensor. These sensors have
a built-in Pt 1000 RTD temperature compensator element.
The MEASURE screen (normal display mode) can provide
different readouts of measured data. With the MEASURE
screen displayed, press or key to show:
Õ Ö
•
•
•
•
Measured conductivity (or resistivity or TDS)
Measured temperature (°C or °F)
Measured conductivity (or resistivity or TDS) and temperature
Measured analog output value (mA).
Passcode-protected
Access
For security, you can enable a passcode feature to restrict access to configuration and calibration settings to authorized
personnel only. See PART THREE, Section 3.5 for details.
Calibration Methods
It is highly recommended to calibrate the transmitter using
GLI’s simple DRY-CAL method, which eliminates the need
to prepare a reference solution (PART THREE, Sections 4.2
and 4.3.) However, the transmitter can be traditionally “wet”
calibrated (Sections 4.2 and 4.4). The analog output loop
can also be calibrated (Section 4.5).
Analog Output
The transmitter’s isolated 4-20 mA analog output can be
assigned to represent one of these:
• Measured conductivity (or resistivity or TDS)
• Measured temperature
Parameter values can be entered to define the endpoints at
which the 4 mA and 20 mA analog output values are desired (range expand). For analog output setup details, see
PART THREE, Section 3.4.
☞
Rev. 1-202
NOTE: During calibration, the analog output is automatically held at the last measured value and, upon
completion, returned to its active state.
13
PRO-series Model C3 Conductivity Transmitter
PART ONE - INTRODUCTION
SECTION 1 - GENERAL INFORMATION
1.2 Transmitter Safety
The transmitter is completely safe to handle. Only low DC
voltage is present.
☞
NOTE: The transmitter can be located in a Class 1, Div. 2
hazardous area.
1.3 Retained
Configuration Values
All user-entered configuration values are retained indefinitely, even if power is lost or turned off. The non-volatile
transmitter memory does not require battery backup.
1.4 Transmitter
Serial Number
A label with the transmitter model number, serial number,
and build date is located between the terminal blocks.
1.5 EMC Conformance
The transmitter is designed to provide protection from most
normally encountered electromagnetic interference. This
protection exceeds U.S. standards and meets European
IEC 1000 (EN 61000) series testing for electromagnetic and
radio frequency emissions and immunity. Refer to Figure 11 and the specifications in Section 2.1 for more information.
EMISSIONS
IMMUNITY
FIGURE 1-1 EMC Diagram
PRO-series Model C3 Conductivity Transmitter
14
Rev. 1-202
PART ONE - INTRODUCTION
SECTION 2 - SPECIFICATIONS
SECTION 2
SPECIFICATIONS
2.1
Operational
Display....................................... Two-line by 16 character LCD
NOTE: The measured value (conductivity, resisitivity or TDS) and temperature
can be displayed separately or shown together on a single screen.
The corresponding 4-20 mA analog output value can also be shown.
Measurement
Ranges
Conductivity .......................... µS/cm: 0-2.000, 0-20.00, 0-200.0 or 0-2000
mS/cm: 0-2.000, 0-20.00 or 0-200.0
Resistivity ............................. 0-19.99 MΩ • cm or 0-999.9 KΩ • cm
TDS ...................................... 0-9999 ppm or 0-9999 ppb
Temperature ......................... -4.0 to +392.0°F or -20.0 to +200.0°C
Analog Output....................... 4.00-20.00 mA
Ambient Conditions:
Operation.............................. -4 to +140°F (-20 to +60°C); 0-95% relative
humidity, non-condensing
Storage ................................. -22 to +158°F (-30 to +70°C); 0-95% relative
humidity, non-condensing
Temperature Compensation ....... Automatic from -4.0 to +392.0°F (-20.0 to
+200.0°C) with selection for Pt 1000 ohm
RTD temperature element, or manually fixed
at a user-set temperature
NOTE: The selected measurement (conductivity, resistivity or TDS) determines which of the following temperature compensation methods
are available:
•
•
•
•
Linear % per °C slope
Built-in ammonia temperature properties table
Built-in natural water temperature properties table
No compensation
Sensor-to-Transmitter Distance .. 300 ft. (91 m) maximum
Power Requirements (Class 2 Power Supply):
Two-wire Hookup .................. 16-30 VDC
Three-wire Hookup ................ 14-30 VDC (16 VDC min. with RS-485 comm.)
Four-wire Hookup.................. 12-30 VDC (16 VDC min. with RS-485 comm.)
Calibration Methods:
Sensor ZERO........................ With the dry sensor in air, press keys to
(all measurements)
initiate automatic system zeroing.
Conductivity Measurement:
DRY-CAL......................... Enter GLI-certified cell constant “K” value and
temperature “T” factor of sensor (during
initial transmitter configuration).
1-POINT SAMPLE ........... Enter one reference solution value or one
sample value (determined by laboratory
analysis or a comparison reading).
Resistivity Measurement:
DRY-CAL......................... See conductivity description above
TDS Measurement:
DRY-CAL......................... See conductivity description above
1-POINT SAMPLE ........... See conductivity description above
Rev. 1-202
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PRO-series Model C3 Conductivity Transmitter
PART ONE - INTRODUCTION
SECTION 2 - SPECIFICATIONS
Analog Output ............................ Isolated 4-20 mA output with 0.004 mA
(12-bit) resolution
NOTE: The output can be assigned to represent the measured value (conductivity, resistivity or TDS), or measured temperature. Parameter
values can be entered to define the endpoints at which the 4 mA
and 20 mA output values are desired (range expand). During calibration, the output is automatically held at the last measured value
and, upon completion, returned to its active state.
Maximum Loop Load.................. Dependent on power supply voltage,
transmitter hookup arrangement, and wire
resistance (see load resistance charts for
respective hookup diagrams in PART TWO,
Section 3.2, 3.3 or 3.4)
Memory (non-volatile)................. All user settings are retained indefinitely without battery backup
Certifications:
European Community EMC..... Certified CE compliant for conducted and
radiated emissions (EN 50081-2) and
immunity (EN 61000-6-2)
General Purpose..................... UL, C-UL, and FM
Class 1, Div. 2 ........................ UL, C-UL, and FM
2.2
Transmitter Performance
(Electrical, Analog Outputs)
Accuracy*................................... ± 0.1% of span
Sensitivity* ................................. ± 0.05% of span
Repeatability*............................. ± 0.05% of span
Temperature Drift*...................... Zero and Span: ± 0.02% of span per °C
Response Time .......................... 1-60 seconds to 90% of value upon step
change (with output filter setting of zero)
*These performance specifications are typical at 25°C.
2.3
Mechanical
Enclosure................................... Polycarbonate; NEMA 4X general purpose;
choice of included mounting hardware
Mounting Configurations............. Panel, wall, pipe or integral sensor mounting
Dimensions ................................ With Back Cover:
3.75 in. W x 3.75 in. H x 2.32 in. D
(95 mm W x 95 mm H x 60 mm D)
Without Back Cover for Panel Mount
3.75 in. W x 3.75 in. H x 0.75 in. D
(95 mm W x 95 mm H x 19 mm D)
Net Weight ................................. 10 oz. (280 g) approximately
PRO-series Model C3 Conductivity Transmitter
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Rev. 1-202
PART TWO - INSTALLATION
SECTION 1 - UNPACKING
PART TWO - INSTALLATION
SECTION 1
UNPACKING
Unpack and examine the equipment even if you do not use
it immediately. If there is evidence of damage, notify the
transit carrier immediately. Recommendation: Save the
shipping carton and packing materials in case the instrument must be stored or re-shipped.
SECTION 2
MECHANICAL REQUIREMENTS
2.1 Location
1.
☞
It is recommended to locate the transmitter as close as
possible to the installed sensor. The maximum allowable distance between an installed sensor and the
transmitter is 300 ft. (91 m).
NOTE: The transmitter can be located in a Class 1,
Div. 2 hazardous area.
2.
Mount the transmitter in a location that is:
➥ Clean and dry where there is little or no vibration.
➥ Protected from corrosive fluids.
➥ Within ambient temperature limits (-4 to +140°F or
-20 to +60°C).
CAUTION:
EXPOSING THE TRANSMITTER TO DIRECT
SUNLIGHT MAY INCREASE THE OPERATING
TEMPERATURE ABOVE ITS SPECIFIED LIMIT,
AND DECREASE DISPLAY VISIBILITY.
Rev. 1-202
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PRO-series Model C3 Conductivity Transmitter
PART TWO - INSTALLATION
SECTION 2 - MECHANICAL REQUIREMENTS
2.2 Wall and Pipe
Mounting
Figure 2-1 illustrates how to wall or pipe mount the transmitter using the supplied GLI hardware kit. Determine the
mounting method, and attach the hardware as shown.
1.
Fasten the wall/pipe adapter to the wall or pipe.
2.
Using a blunt tool, open both cable entry knockout
holes in the back cover.
3.
Insert-and-twist the back cover onto the installed
wall/pipe adapter, and tighten its two screws to lock
back cover onto the adapter.
4.
Attach transmitter to back cover using its four captive
screws.
PRO-SERIES BACK COVER
TWO SCREWS LOCK BACK COVER TO
WALL/PIPE ADAPTER AFTER
COVER IS TWISTED ONTO ADAPTER.
PRO-SERIES
TRANSMITTER
VERTICAL
PIPE MOUNT
WALL MOUNT
HORIZONTAL
PIPE MOUNT
SCREWS
(CUSTOMER SUPPLIED)
PRO-SERIES
WALL/PIPE ADAPTER
STRAPS OR HOSE CLAMPS
(CUSTOMER SUPPLIED)
FIGURE 2-1 Wall and Pipe Mounting Details
PRO-series Model C3 Conductivity Transmitter
18
Rev. 1-202
PART TWO - INSTALLATION
SECTION 2 - MECHANICAL REQUIREMENTS
2.3 Panel Mounting
Figure 2-2 illustrates how to panel mount the transmitter
using the supplied GLI panel mount hardware kit.
☞
1.
Cut a 3.30-inch (84 mm) square cutout hole in panel.
2.
Position panel-mount gasket over cutout in front of
panel, and place retainer plate behind panel with its
four threaded inserts facing away from back of panel.
3.
Attach transmitter to retainer plate using its four captive
screws.
NOTE: If panel is too thick, remove captive screws
from transmitter, and use longer screws provided in hardware kit.
FIGURE 2-2 Panel Mounting Details
Rev. 1-202
19
PRO-series Model C3 Conductivity Transmitter
PART TWO - INSTALLATION
SECTION 2 - MECHANICAL REQUIREMENTS
2.4 Integral Sensor
Mounting
Figure 2-3 illustrates how to integrally mount the transmitter
onto a sensor using the supplied GLI mounting hardware kit.
1.
Using a blunt tool, open knockout hole in bottom of
swivel ball for routing the sensor cable.
2.
Attach swivel-mount assembly onto back end of sensor
using coupling provided with GLI sensor (only sensors
with “PRO1” suffix in their part number) or an appropriately-sized coupling that you provide.
3.
Insert-and-twist the back cover onto the installed
swivel-mount assembly. Tighten its two screws to lock
the back cover onto the swivel-mount assembly.
NOTE: To change mounting angle, loosen swivel-mount
assembly by lifting tab on bottom of swivel nut. Position to desired angle and re-tighten swivel nut.
4.
Attach transmitter to back cover using its four captive screws.
PRO-SERIES TRANSMITTER
PRO-SERIES BACK COVER
TWO SCREWS LOCK BACK COVER
TO SWIVEL-MOUNT ASSEMBLY
AFTER COVER IS TWISTED ONTO
ADAPTER.
SWIVEL-MOUNT ASSEMBLY (TO
LOOSEN ASSEMBLY TO CHANGE
MOUNTING ANGLE, LIFT TAB
SLIGHTLY ON BOTTOM OF SWIVEL
NUT)
SENSOR
CABLE
TAB
COUPLING (SUPPLIED
WITH GLI SENSOR THAT
HAS "PRO1" SUFFIX IN
SENSOR PART NUMBER)
BOTTOM OF SWIVEL NUT
GLI SENSOR
(COUPLING AND SENSOR
APPEAR DIFFERENTLY FOR
EACH MEASUREMENT TYPE)
FIGURE 2-3 Integral Sensor Mounting Details
PRO-series Model C3 Conductivity Transmitter
20
Rev. 1-202
PART TWO - INSTALLATION
SECTION 3 - ELECTRICAL CONNECTIONS
SECTION 3
ELECTRICAL CONNECTIONS
Figure 2-4 shows the terminal block arrangement and
terminal designations for the transmitter.
☞
NOTE: All terminals are suitable for single wires up to 14
AWG (2.5 mm2).
☞
Wiring Tip! To comply with European Community (CE) electromagnetic compatibility requirements, follow these general wiring guidelines:
1. Locate transmitter as far as possible from motors and other nonCE certified devices with excessive electromagnetic emissions.
2. Use GLI-specified ferrites and cables. Failure to do so may eliminate compliance. Locate all ferrites as close as possible to the
transmitter.
◆ DC Power Supply Cable (GLI 1W0980 two-conductor plus
shield): Connect cable shield to earth ground at the supply
end. Loop cable 2-1/2 times through ferrite (Steward
#28B0686-200, Fair-Rite Corp. #2643665702, or equivalent).
◆ Sensor Cable: Keep cable shields as short as possible. At the
transmitter end, connect the outer shield to earth ground, and
the inner shield to the SHIELD terminal. Clamp ferrite (Steward #28A2025-OAO, Fair-Rite Corp. #0431164281, or equivalent) on sensor cable.
◆ Analog mA Output Cable (four-wire hookup only -- GLI
1W0980 two-conductor plus shield): Connect cable shield to
earth ground at the supply end. Loop cable 2-1/2 times
through ferrite (Steward #28B0686-200, Fair-Rite Corp.
#2643665702, or equivalent).
PRO-C-ESP: 2E Conductivity
14-30 VDC Class 2 20mA max
(-)
Serial #: CA0123456
1
2
3
4
5
6
7
2-Wire Connection
TB2
(+)
(See manual for 3, 4 Wire Connections)
TB1
Red
(Drive)
NC
Shield
(Ground)
White
(Temp)
Blue
(Ground)
NC
Black
(Signal)
1
2
3
4
5
6
7
FIGURE 2-4 Transmitter Terminal Designations
Rev. 1-202
21
PRO-series Model C3 Conductivity Transmitter
PART TWO - INSTALLATION
SECTION 3 - ELECTRICAL CONNECTIONS
3.1 GLI Contacting
Conductivity Sensor
Depending on how transmitter is mounted, route the sensor
(or interconnect) cable into the transmitter as follows:
• Wall/Pipe-mounted Transmitter: Route cable through
left side cable entry knockout hole in the back cover.
• Panel-mounted Transmitter: Route cable behind panel
to the exposed TB2 terminal strip.
• Integral Sensor-mounted Transmitter: Route cable
through swivel ball knockout hole and center hole in
back cover. (Do not open left side cable entry knockout
hole in back cover.)
☞
Wiring Tip! Route the sensor cable in 1/2-inch,
grounded metal conduit to protect it from moisture,
electrical noise, and mechanical damage.
For installations where the distance between sensor and
transmitter exceeds the sensor cable length, indirectly
connect the sensor to the transmitter using a junction box
and interconnect cable.
☞
NOTE: Do not route the sensor cable in any conduit containing AC or DC power wiring (“electrical noise”
may interfere with the sensor signal). Also, always
re-calibrate the system when the cable length between sensor and transmitter changes.
Refer to Figure 2-5 and connect the sensor (or interconnect) cable wires as shown, matching colors as indicated.
☞
NOTE: For systems not requiring CE compliance and
lacking an earth ground, connect the outer shield to
Terminal 3 on TB2.
Red
1 Red (Drive)
2
Inner Shield
White
Blue
3 Shield (Ground)
4 White (Temp)
5 Blue (Ground)
6
SENSOR
7 Black (Signal)
To Earth Ground
FIGURE 2-5 Connecting GLI Contacting Conductivity Sensor
PRO-series Model C3 Conductivity Transmitter
22
Rev. 1-202
PART TWO - INSTALLATION
SECTION 3 - ELECTRICAL CONNECTIONS
3.2 Two-wire Hookup
In a two-wire hookup, at least 16 VDC is required for operation. A load device can be connected in the current loop
(see Figure 2-6 for details).
Depending on how the transmitter is mounted, route the DC
power/analog output wiring into the transmitter as follows:
• Wall/Pipe-mounted Transmitter: Route cable through
right side cable entry knockout hole in the back cover.
• Panel-mounted Transmitter: Route cable behind panel
to the exposed TB1 terminal strip.
• Integral Sensor-mounted Transmitter: Route cable
through right side cable entry knockout hole in the back
cover. (Do not open left side cable entry knockout hole
in cover.)
☞
Wiring Tip! Use high quality, shielded instrumentation cable.
+
1
2
3
4
5
6
7
Loop Power
16-30VDC
Class 2
Jumper
Required
Loop Resistance
(See nomograph)
800
700
RESISTANCE
IN OHMS
600
500
400
300
LOOP LOAD
50 Ohms/Volt
200
100
0
16
18
20
22
24
26
28
30
DC VOLTAGE
FIGURE 2-6
Two-wire Hookup
3.3 Three-wire Hookups
In a three-wire hookup, the transmitter can be wired four
ways depending on load “sinking” or “sourcing” and whether
or not RS-485 serial communication is used. At least 14
VDC is required for operation (16 VDC with serial communication). When using RS-485, consult GLI for Command Set.
Depending on how the transmitter is mounted, route the DC
power, analog output, and RS-485 serial communication
wiring into the transmitter as follows:
Rev. 1-202
23
PRO-series Model C3 Conductivity Transmitter
PART TWO - INSTALLATION
SECTION 3 - ELECTRICAL CONNECTIONS
• Wall/Pipe-mounted Transmitter: Route cable through
right side cable entry knockout hole in the back cover.
• Panel-mounted Transmitter: Route cable behind panel
to the exposed TB1 terminal strip.
• Integral Sensor-mounted Transmitter: Route cable
through right side cable entry knockout hole in the back
cover. (Do not open left side cable entry knockout hole
in cover.)
☞
Wiring Tip! Use high quality, shielded instrumentation cable.
Refer to the three-wire hookup that meets your application
requirements, and connect the transmitter accordingly.
Loop Resistance
(See nomograph)
+
1
2
3
4
5
6
7
Loop Power
14-30VDC
Class 2
Jumper
Required
-
1400
RESISTANCE
IN OHMS
1200
1000
800
600
LOOP LOAD
50 Ohms/Volt
400
200
0
14
16
20
18
22
24
26
28
30
DC VOLTAGE
FIGURE 2-7
Three-wire Hookup -- Load Sinking
Loop Resistance
(See nomograph)
1
2
3
4
5
6
7
+
Jumper
Required
"A" +
"B" Shield
-
Loop Power
16-30VDC
Class 2
RS-485 Serial
communications
1400
RESISTANCE
IN OHMS
1200
1000
800
600
LOOP LOAD
50 Ohms/Volt
400
200
0
16
18
20
22
24
26
28
30
DC VOLTAGE
FIGURE 2-8
Three-wire Hookup -- Load Sinking with RS-485 Serial Communication
PRO-series Model C3 Conductivity Transmitter
24
Rev. 1-202
PART TWO - INSTALLATION
SECTION 3 - ELECTRICAL CONNECTIONS
Jumper Required
1
2
3
4
5
6
7
+
Loop Resistance
(See nomograph)
Loop Power
14-30VDC
Class 2
-
1400
RESISTANCE
IN OHMS
1200
1000
800
600
LOOP LOAD
50 Ohms/Volt
400
200
0
14
16
18
20
22
24
26
28
30
DC VOLTAGE
FIGURE 2-9
Three-wire Hookup -- Load Sourcing
1
2
3
4
5
6
7
+
Loop Resistance
(See nomograph)
"A" +
"B" Shield
-
RS-485 Serial
communications
Loop Power
16-30VDC
Class 2
1400
RESISTANCE
IN OHMS
1200
1000
800
600
LOOP LOAD
50 Ohms/Volt
400
200
0
16
18
20
22
24
26
28
30
DC VOLTAGE
FIGURE 2-10
Three-wire Hookup -- Load Sourcing with RS-485 Serial Communication
3.4 Four-wire Hookups
In a four-wire hookup, the transmitter can be wired two ways
depending on whether or not RS-485 serial communication
is used. At least 12 VDC is required for operation (16 VDC
with serial communication). When using RS-485, consult
GLI for Command Set.
Depending on how the transmitter is mounted, route the DC
power, analog output, and RS-485 serial communication
wiring into the transmitter as follows:
• Wall/Pipe-mounted Transmitter: Route cable through
right side cable entry knockout hole in the back cover.
• Panel-mounted Transmitter: Route cable behind panel
to the exposed TB1 terminal strip.
Rev. 1-202
25
PRO-series Model C3 Conductivity Transmitter
PART TWO - INSTALLATION
SECTION 3 - ELECTRICAL CONNECTIONS
• Integral Sensor-mounted Transmitter: Route cable
through right side cable entry knockout hole in the back
cover. (Do not open left side cable entry knockout hole
in cover.)
☞
Wiring Tip! Use high quality, shielded instrumentation cable.
Refer to the four-wire hookup that meets your application
requirements, and connect the transmitter accordingly.
Loop Resistance
(See nomograph)
1
2
3
4
5
6
7
+
Loop Power
12-30VDC
Class 2
+ External Power
12-30VDC
Class 2
-
-
1400
RESISTANCE
IN OHMS
1200
1000
800
600
LOOP LOAD
50 Ohms/Volt
400
200
0
12
14
16
18
20
22
24
26
28
30
DC VOLTAGE
FIGURE 2-11
Four-wire Hookup without RS-485 Serial Communication
Loop Resistance
(See nomograph)
1
2
3
4
5
6
7
+
"A" +
"B" Shield
+
RS-485 Serial
communications
-
Loop Power
12-30VDC
Class 2
-
External Power
16-30VDC
Class 2
1400
RESISTANCE
IN OHMS
1200
1000
800
600
LOOP LOAD
50 Ohms/Volt
400
200
0
12
14
16
18
20
22
24
26
28
30
DC VOLTAGE
FIGURE 2-12
Four-wire Hookup with RS-485 Serial Communication
PRO-series Model C3 Conductivity Transmitter
26
Rev. 1-202
PART TWO - INSTALLATION
SECTION 3 - ELECTRICAL CONNECTIONS
3.5 Monitor Mode
Hookups (without
current loop)
The transmitter can be wired two ways in a monitor mode
hookup (without current loop) depending on whether or not
RS-485 serial communication is used. At least 12 VDC is
required for operation (16 VDC with serial communication).
When using RS-485, consult GLI for Command Set.
Depending on how the transmitter is mounted, route the DC
power and RS-485 serial communication wiring into the
transmitter as follows:
• Wall/Pipe-mounted Transmitter: Route cable through
right side cable entry knockout hole in the back cover.
• Panel-mounted Transmitter: Route cable behind panel
to the exposed TB1 terminal strip.
• Integral Sensor-mounted Transmitter: Route cable
through right side cable entry knockout hole in the back
cover. (Do not open left side cable entry knockout hole
in cover.)
☞
Wiring Tip! Use high quality, shielded instrumentation cable.
Refer to the monitor mode hookup that meets your application requirements, and connect the transmitter accordingly.
1
2
3
4
5
6
7
+
-
External Power
12-30VDC
Class 2
FIGURE 2-13
Monitor Mode Hookup (without Current Loop) -- without RS-485 Serial Communication
1
2
3
4
5
6
7
+
"A" +
"B" Shield
RS-485 Serial
communication
-
External Power
16-30VDC
Class 2
FIGURE 2-14
Monitor Mode Hookup (without Current Loop) -- with RS-485 Serial Communication
Rev. 1-202
27
PRO-series Model C3 Conductivity Transmitter
PART THREE - OPERATION
SECTION 1 - USER INTERFACE
PART THREE - OPERATION
SECTION 1
USER INTERFACE
The user interface consists of a two-line LCD display and a
keypad with MENU, ENTER, ESC, , , , and keys.
ÕÖ×
1.1 Display
Ø
By using the keypad, you can display three types of
screens:
• MEASURE Screens: The normal display mode shows the
measured value (conductivity, resistivity or TDS). Pressing the
key sequentially scrolls through these other
measurement readouts:
Ö
✓ Measured process temperature
✓ Measured value and temperature
✓ Measured analog output mA value
• MENU Screens: These top-level and lower-level (submenu) screens within the three main branches of the
menu tree are used to access edit/selection screens for
configuration. (EXIT screens at the end of each menu
branch enable you to move up one level in the menu tree
by pressing the ENTER key. This is functionally the same
as pressing the ESC key.)
• Edit/Selection Screens: These screens enter values/
choices to calibrate, configure, and test the transmitter.
1.2 Keypad
The keypad enables you to move throughout the transmitter
menu tree. The keys and their related functions are:
1.
MENU key: Pressing this key with the MEASURE
screen displayed shows the “MAIN MENU CALIBRATE”
screen. To display the CONFIGURE or TEST/MAINT
top-level main branch screen, press the
key. Pressing the MENU key with a menu screen displayed
always shows the top-level screen in that branch.
(Pressing the MENU key also “aborts” the procedure to
change values or selections.)
Ø
PRO-series Model C3 Conductivity Transmitter
28
Rev. 1-202
PART THREE - OPERATION
SECTION 1 - USER INTERFACE
2.
ENTER key: Pressing this key does two things; it displays submenu and edit/selection screens, and it enters
(saves) configuration values/selections.
3.
ESC key: Pressing this key always takes the display up
one level in the menu tree. (Example: With any “MAIN
MENU” screen displayed, pressing the ESC key once
takes the display up one level to the MEASURE
screen.) The ESC key can also “abort” the procedure to
change a value or selection.
4.
Õ and Ö keys: Depending on the type of displayed
screen, these keys do the following:
• MEASURE Screen: Changes readout (in continuous
loop sequence) to show different measurements.
• Menu Screens: These keys are non-functional.
• Edit/Selection Screens: Moves cursor left or right to
select digit for adjustment with and keys.
×
5.
Ø
× and Ø keys: Depending on the type of displayed
screen, these keys do the following:
• MEASURE Screen: These keys are non-functional.
• Menu Screens: Moves up or down respectively
between other same-level menu screens.
• Edit/Selection Screens: Adjusts selected digit value
up or down, or moves up or down between choices.
FIGURE 3-1 Transmitter Keypad
Rev. 1-202
29
PRO-series Model C3 Conductivity Transmitter
PART THREE - OPERATION
SECTION 1 - USER INTERFACE
1.4 MEASURE Screen
(normal display mode)
The MEASURE screen is normally displayed. Pressing the
MENU key temporarily replaces the MEASURE screen with
the top-level “MAIN MENU CALIBRATE” branch selection
screen. Using the keypad, you can then display other
screens to calibrate, configure or test the transmitter. If the
keypad is not used within 30 minutes, except during
calibration or while using specific transmitter test/
maintenance functions, the display will automatically
return to the MEASURE screen. To display the MEASURE
screen at any time, press the MENU key once and then
press the ESC key once.
The MEASURE screen can show four different readout versions. To select between them, in continuous loop
or
key. These are examples of
sequence, press the
the different versions:
Õ
☞
Ö
Ö
Ö
Ö
Ö
NOTE: When the transmitter returns to its normal
MEASURE screen mode, the appearing readout is
always the version last selected.
Note that three MEASURE screen readout examples show the factory-default “COND” notation on
their top lines, illustrating the transmitter notation
feature. To create your own notation, refer to PART
THREE, Section 3.2, subheading “ENTER NOTE
(top line of MEASURE screen).”
When the measured value is beyond the transmitter measuring range, a series of “ + ” or “ - ” screen symbols appear,
respectively indicating that the value is above or below
range.
PRO-series Model C3 Conductivity Transmitter
30
Rev. 1-202
PART THREE - OPERATION
SECTION 2 - MENU STRUCTURE
SECTION 2
MENU STRUCTURE
The transmitter menu tree is divided into three main
branches: CALIBRATE, CONFIGURE, and TEST/MAINT.
Each main branch is structured similarly in layers with toplevel screens, related lower-level submenu screens and, in
many cases, sub-submenu screens.
Each layer contains an EXIT screen to return the display up
one level to the previous layer of screens.
☞
2.1 Displaying
Main Branch
Selection Screens
Rev. 1-202
Menu Structure Tip! For operating convenience, the
layers within each main branch are organized with the
most frequently used function screens at their beginning,
rather than the function screens used for initial startup.
1.
With the MEASURE screen displayed, pressing the
MENU key always shows the
branch selection screen. (Pressing the MENU key with
any other type of screen displayed always returns the
display to the top of that respective menu branch.)
Ø
×
2.
Press and keys to select between the three MAIN
MENU branch selection screens (CALIBRATE,
CONFIGURE or TEST/MAINT), or the EXIT screen:
3.
With the desired MAIN MENU branch selection screen
displayed, press ENTER key to display the first toplevel menu screen within that branch.
31
PRO-series Model C3 Conductivity Transmitter
PART THREE - OPERATION
SECTION 2 - MENU STRUCTURE
2.2 Displaying
Top-level
Menu Screens
With the first top-level menu screen within the desired main
and
keys to scroll through
branch displayed, use the
other top-level screens to access a desired screen.
Ø
×
The top-level menu screens for each main branch are:
Ð
Ð
Ð
SENSOR
SET OUTPUT
STATUS
CAL OUTPUT
SET PASSCODE
HOLD OUTPUT
EXIT
SET °C OR °F
OUTPUT
LANGUAGE
EPROM VERSION
SENSOR
SELECT SIM
EXIT
SIM SENSOR
RESET CONFIGURE
RESET CALIBRATE
EXIT
☞
Menu Structure Tip! A menu screen with a horizontal
bar symbol ( ) at the start of its first line indicates there
is a related submenu or edit/selection screen.
___
___
___
___
È
A menu screen with a “ ” symbol at the start and a “ ”
symbol at the end of its second line indicates that you
can select other screens within the same layer by
pressing the key. A “ ↕ ” symbol at the end of the second line indicates that you can move up or down
between screens by respectively pressing the
or
key. When a “ ” symbol appears, it indicates you have
reached the end of the screens in that layer. You can
select previous screens using the key.
Ø
×
Ç
Ø
×
PRO-series Model C3 Conductivity Transmitter
32
Rev. 1-202
PART THREE - OPERATION
SECTION 2 - MENU STRUCTURE
2.3 Displaying
Submenu Screens
After selecting a top-level menu screen, press the ENTER
key to display a related submenu or edit/selection screen:
• Submenu Screens are usually linked to other related
key displays these
same-level screens. Pressing the
other related menu screens.
Ø
Example: With this submenu screen displayed:
Ø
key displays this related,
pressing the
same-level submenu screen:
• Edit/Selection Screens always have a first line ending
or key changes the value/
with a “?”. Pressing the
choice enclosed by parenthesis (second line on screen).
Ø ×
Example: With this submenu screen displayed:
pressing the
Ø key displays this related choice:
Use arrow keys to edit/change the value/choice enclosed
by parenthesis (examples shown above and below).
2.4 Adjusting
Edit/Selection
Screen Values
×
Õ
Ø
Ö
and
A choice can be changed by simply using the
keys. Numerical values can be adjusted using the and
keys to select a digit, and and keys to adjust its value.
×
2.5 Entering (Storing)
Edit/Selection Screen
Values/Choices
☞
Rev. 1-202
Ø
With the desired value/choice displayed, press the ENTER
key to enter (store) it into the non-volatile transmitter memory. The previous screen will then re-appear.
NOTE: You can always press the ESC key to abort saving
a new setting. The original setting will be retained.
33
PRO-series Model C3 Conductivity Transmitter
PART THREE - OPERATION
SECTION 3 - TRANSMITTER CONFIGURATION
SECTION 3
TRANSMITTER CONFIGURATION
☞
3.1 Selecting LANGUAGE
to Operate Transmitter
NOTE: When the passcode feature is enabled (Section
3.5), you must successfully enter the passcode
before attempting to enter a configuration setting.
The transmitter is normally equipped to display screens in
English and Spanish (Español). However, another language
such as French (Français), German (Deutsche), etc. may be
substituted for Spanish. The transmitter is factory-set for
English. To select the other language:
1.
Press MENU key to display a “MAIN MENU” screen.
If the
or
Ø × key to display it.
☞
3.2 Configuring
Sensor Characteristics
SELECT MEASURE
(conductivity,
resistivity or TDS)
2.
Press ENTER key to display
3.
Press
4.
. Use
Press ENTER key to display
or
key to select a language, and press ENTER
key to enter it.
Ø
Ø key until
.
screen appears.
×
NOTE: After a language is selected and entered, all
screens are displayed in that language.
The transmitter must be configured to define the characteristics of the sensor including its “K” value, temperature
element type, “T” factor, and other related items such as
selecting the measurement and its format, temperature
compensation, input signal filtering, etc.
1. With the
Ø key once to display
2. Press ENTER key to display
PRO-series Model C3 Conductivity Transmitter
screen is not showing, use
34
screen displayed, press
.
.
Rev. 1-202
PART THREE - OPERATION
SECTION 3 - TRANSMITTER CONFIGURATION
3.
Press ENTER key again to display a screen like
Ø
×
and
keys to select the
. Use
desired measurement (conductivity, resistivity or TDS),
and press ENTER key to enter it.
WARNING:
CHANGING THE MEASUREMENT AUTOMATICALLY
REPLACES ALL USER-ENTERED CONFIGURATION VALUES WITH FACTORY-DEFAULTS.
Select
DISPLAY FORMAT
After choosing the measurement, select the desired display
format for the MEASURE screen. The selected units and
resolution will also appear on all applicable edit/selection
menu screens.
The nominal cell constant of a sensor determines its inherent measuring range. TABLE A lists cell constants and their
respective measuring ranges. When configuring measuring
units and display resolution for your application, make sure
they are within the sensor’s inherent listed range. If not,
choose a sensor with the appropriate constant.
TABLE A -- Sensor Cell Constants and Measuring Ranges
☞
Sensor
Cell
Constant
Conductivity
(in µS/cm)
0.05
0.5
1
5
10
0-100
0-1000
0-2000
0-10,000
0-200,000
Inherent Measuring Range
Resistivity
(in MΩ • cm)
See Note below
See Note below
See Note below
See Note below
See Note below
NOTE: To determine which cell constant to use, convert
the full-scale TDS value to its equivalent conductivity value at 25°C. Do this by multiplying the TDS
value by “2.” Then find the range in the Conductivity
column corresponding to the calculated value. The
cell constant to use is in that row.
1.
With the
Ø key once to display
Rev. 1-202
0.002-20
0.001-20
not applicable
not applicable
not applicable
TDS
(in ppm)
35
screen displayed, press
.
PRO-series Model C3 Conductivity Transmitter
PART THREE - OPERATION
SECTION 3 - TRANSMITTER CONFIGURATION
2.
Press
ENTER
key
to
display
Ø
a
screen
like
×
and
keys to select a
. Use
display format, and press ENTER key to enter it:
CONDUCTIVITY
2.000 µS/cm 2.000 mS/cm
20.00 µS/cm 20.00 mS/cm
200.0 µS/cm 200.0 mS/cm
2000 µS/cm
SET FILTER Time
RESISTIVITY
XX.XX MΩ • cm
XXX.X KΩ • cm
TDS
XXXX ppm
XXXX ppb
A time constant (in seconds) can be set to filter or “smooth
out” the sensor signal. A minimum value of “0 seconds” has
no smoothing effect. A maximum value of “60 seconds” provides maximum smoothing. Deciding what sensor signal
filter time to use is a compromise. The higher the filter time,
the longer the sensor signal response time will be to a
change in the actual process value.
1.
With the
screen displayed, press
Ø key once to display
2.
Press
ENTER
key
.
to
display
a
screen
like
. Use arrow keys to adjust to a
desired filter time, and press ENTER key to enter it.
Select Temperature
COMPENSATION
Configure the required type of temperature compensation
for the selected measurement.
1.
With the
screen displayed, press
Ø key once to display
2.
Press
ENTER
key
.
to
display
Ø
a
screen
like
×
and
keys to select the
. Use
type of compensation, and press ENTER key to enter it:
PRO-series Model C3 Conductivity Transmitter
36
Rev. 1-202
PART THREE - OPERATION
SECTION 3 - TRANSMITTER CONFIGURATION
• LINEAR: Recommended for most aqueous solutions
• AMMONIA (not available for TDS measurement):
Built-in temperature properties table only for specific
applications -- consult factory
• NATURAL WATER (not available for TDS measurement): Built-in temperature properties table only
for specific applications -- consult factory)
• NONE: Measurement values are not compensated
☞
CONFIG TDS Measurement
(configuration not needed
for other measurements)
NOTE: LINEAR is the factory default for temperature
compensation with a 2.00% per °C slope and
25.0°C reference temperature. This provides
the best results for most aqueous solutions. To
enter different slope and reference temperature
values for an uncommon solution, refer to
subheading “CONFIG LINEAR Temperature
Compensation” in this section for details.
Only when TDS is selected must the transmitter be
further configured to define a conductivity-to-TDS conversion factor. If CONDUCTIVITY or RESISTIVITY was
selected, disregard this subsection -- no measurement configuration is needed.
1.
With the
screen displayed, press
Ø key once to display
.
2.
Press ENTER key to display
3.
Press ENTER key again to display
.
and
keys to select a conversion factor, and
Use
press ENTER key to enter it:
Ø
.
×
• NaCl: Built-in NaCl conductivity-to-TDS conversion
factor.
• USER DEFINED: Conductivity-to-TDS conversion
factor set by user (see step 4).
Rev. 1-202
37
PRO-series Model C3 Conductivity Transmitter
PART THREE - OPERATION
SECTION 3 - TRANSMITTER CONFIGURATION
4.
If “USER DEFINED” was selected, you must set a conductivity-to-TDS conversion factor:
A. With the
press
screen displayed,
Ø key once to display
.
B. Press ENTER key to display a screen like
. Use arrow keys to adjust to
a desired conductivity-to-TDS conversion factor,
and press ENTER key to enter it.
C. After the
press ESC
key
screen re-appears,
to return to the
once
screen.
CONFIG LINEAR
Temperature Compensation
(configuration not needed for
other compensation methods)
Only when LINEAR is the selected temperature compensation, determine if the transmitter should be further
configured with a specific slope (% per °C) and reference temperature. If the built-in AMMONIA or NATURAL
WATER properties table or NONE was selected, disregard
this subsection -- no compensation configuration is needed.
Factory defaults for LINEAR compensation are 2.00%/°C
slope and 25.0° reference temperature. These values are
appropriate for most aqueous solutions. Use chemical
handbook tables to find values for uncommon solutions. To
enter different values:
1.
With the
screen displayed, press
screen appears.
or
Ø key until
2.
Press ENTER key to display
3.
Press ENTER key again to display a screen like
.
. Use arrow keys to adjust to a
desired slope, and press ENTER key to enter it.
PRO-series Model C3 Conductivity Transmitter
38
Rev. 1-202
PART THREE - OPERATION
SECTION 3 - TRANSMITTER CONFIGURATION
4.
After the
screen re-appears, press
Ø key once to display
5.
Press
ENTER
key
.
to
display
a
screen
like
. Use arrow keys to adjust to a
desired reference temperature, and press ENTER key
to enter it.
6.
After the
screen re-appears, press
ESC key once to return to the
screen.
ENTER NOTE (top line
of MEASURE screen)
The top line of the MEASURE screen readouts that separately show the measurement, temperature, and analog
output values are factory set to read “COND.” This notation
can be changed, for example, to “BASIN 1” to tailor the
transmitter MEASURE screen to the application. The top
line would then be “MEASURE BASIN 1.” The notation is
limited to eight characters which can be a combination of
capital letters A through Z, numbers 0 through 9, spaces,
# symbols, hyphens, and periods.
1.
With the
Ø key once to display
2.
screen displayed, press
.
Press ENTER key to display
Create the desired notation on the second line:
.
A. Starting with extreme left character position, use
and keys to select the desired first character.
×
B.
Ø
Press Ö key once to select the next character, and
use × and Ø keys to select its desired character.
C. Repeat procedure until desired notation is displayed.
3.
Rev. 1-202
Press ENTER key to enter the displayed notation.
39
PRO-series Model C3 Conductivity Transmitter
PART THREE - OPERATION
SELECT CELL K
(sensor’s GLI-certified
“K” value)
SECTION 3 - TRANSMITTER CONFIGURATION
Each GLI Model 3400-series contacting conductivity sensor
has a unique, certified “K” value shown on a label attached
to its cable (or to the inside cover of its optional junction box
head). By entering this “K” value, calibration (including zeroing) is only necessary when this sensor is replaced. This
also sets the transmitter measuring range to match the inherent range of the sensor’s cell constant.
1.
With the
screen displayed, press
Ø key once to display
.
2.
Press ENTER key to display
3.
Press ENTER key again to display a screen like
.
Ø
×
and
keys to select the
. Use
nominal cell category that corresponds to the sensor’s
GLI-certified “K” value, and press ENTER key to enter
it.
4.
After the
screen re-appears, press
Ø key once to display
5.
Press
ENTER
key
.
to
display
a
screen
like
. Use arrow keys to adjust the
displayed value to exactly match the sensor’s GLIcertified “K” value, and press ENTER key to enter it.
6.
After the
screen re-appears, press
ESC key once to return to the
screen.
Select
TEMP ELEMENT
Type
PRO-series Model C3 Conductivity Transmitter
The temperature element type is factory-set to “PT1000” for
automatic temperature compensation (defines built-in temperature element in GLI contacting conductivity sensors).
40
Rev. 1-202
PART THREE - OPERATION
SECTION 3 - TRANSMITTER CONFIGURATION
☞
NOTE: When “PT1000” is selected but the element is not
connected to the transmitter, a “WARNING:
CHECK STATUS” message will appear. To prevent
or clear this message, connect the element or select “MANUAL.”
To configure the transmitter for fixed MANUAL temperature
compensation you must select “MANUAL” and enter a specific temperature:
1.
screen displayed, press
With the
Ø key once to display
.
2.
Press ENTER key to display
3.
.
Press ENTER key again to display
key to select “MANUAL” for fixed manual temperUse
ature compensation, and press ENTER key to enter it:
4.
Now determine and enter a specific manual temperature compensation value:
.
Ø
A. With the
press
screen displayed,
Ø key once to display
.
B. Press ENTER key to display a screen like
. Use arrow keys to adjust to
a desired temperature for fixed MANUAL compensation, and press ENTER key to enter it.
SET T FACTOR
(sensor’s GLI-certified
“T” factor)
GLI tests each sensor to provide a unique, certified temperature T FACTOR because:
• Temperature greatly affects conductivity measurement
accuracy.
• The inherent ohm value of the Pt 1000 RTD temperature
element varies slightly from sensor to sensor, affecting
temperature measurement accuracy.
Rev. 1-202
41
PRO-series Model C3 Conductivity Transmitter
PART THREE - OPERATION
SECTION 3 - TRANSMITTER CONFIGURATION
By entering the sensor’s unique T FACTOR, the transmitter
will provide the highest possible measuring accuracy for
both temperature and conductivity.
1.
With the
screen displayed, press
Ø key once to display
2.
Press
ENTER
key
.
to
display
a
screen
like
. Use arrow keys to adjust the
displayed value to exactly match the sensor’s GLIcertified T FACTOR, and press ENTER key to enter it.
SPECIAL CASE -- ALTERED SENSOR CABLE LENGTH
Changing the standard 20 ft. (6 m) sensor cable length, by
shortening it or adding an interconnect cable, affects temperature measuring accuracy. The GLI-certified T FACTOR is based
on standard cable length. To compensate for altered cable
length measuring error, change the certified T FACTOR entry:
• Shortened Sensor Cable: To increase the transmitter temperature reading to match the known solution temperature,
decrease the T FACTOR by 3.85 ohms for each °C difference.
• Added Interconnect Cable: To decrease the transmitter
temperature reading to match the known solution temperature, increase the T FACTOR by 3.85 ohms for each °C
difference.
Example: Suppose the known solution temperature is 50°C
and the transmitter reads 53°C due to interconnect cable resistance. Multiply the 3°C difference by 3.85 ohms to get 11.55.
Then increase the sensor T FACTOR by adding 11.55 to it and
entering that value. If, due to a shortened sensor cable, the
transmitter was reading 3°C less than the known solution temperature you would decrease the sensor T FACTOR by
subtracting 11.55 from it.
3.
After the
screen re-appears, press
ESC key twice to return to the
screen.
PRO-series Model C3 Conductivity Transmitter
42
Rev. 1-202
PART THREE - OPERATION
3.3 SET °C OR °F
(temperature display
format)
SECTION 3 - TRANSMITTER CONFIGURATION
The MEASURE screen can be set to display temperature
values in °C or °F. In either case, the display resolution for
measured temperature is always “XX.X.”
1.
With the
key --
×
not
Ø
screen displayed, press
key -- twice to display
.
2.
ENTER
Press
key
to
display
Ø
a
screen
like
×
and
keys to select the
. Use
displayed temperature units (°C or °F), and press
ENTER key to enter it.
3.4 Configuring
Analog Output
SET PARAMETER
(representation)
The transmitter provides an isolated 4-20 mA analog output.
During normal measurement operation, the output is active
but can be held at the last measured value for up to 30 minutes by using the “HOLD OUTPUT” function in the
TEST/MAINT menu. (See PART THREE, Section 5.2 for
details.) During calibration, the output is automatically held
at the last measured value and, upon completion, returned
to its active state.
The output can be assigned to represent the SENSOR
(measured conductivity, resistivity or TDS) or measured
TEMPERATURE.
1.
key -- not
Rev. 1-202
screen displayed, press
With the
Ø key -- twice to display
×
.
2.
Press ENTER key to display
3.
Press ENTER key again to display
.
and
keys to select the parameter the output
Use
will represent, and press ENTER key to enter it.
Ø
.
×
43
PRO-series Model C3 Conductivity Transmitter
PART THREE - OPERATION
SECTION 3 - TRANSMITTER CONFIGURATION
SET 4 mA and
20 mA VALUES
(range expand)
Parameter values can be set to define the endpoints at
which the 4 mA and 20 mA analog output values are desired.
1.
screen displayed, press
With the
Ø key once to display
2.
Press
ENTER
key
.
to
display
a
screen
like
. Use arrow keys to set the value
at which 4 mA is desired, and press ENTER key to enter it.
3.
screen re-appears, press
After the
Ø key once to display
4.
Press
ENTER
key
.
to
display
a
screen
like
. Use arrow keys to set the value
at which 20 mA is desired, and press ENTER key to
enter it.
☞
SET FILTER Time
NOTE: If the same values are set for 4 mA and 20 mA, the
output automatically goes to, and remains at, 20 mA.
A time constant (in seconds) can be set to filter or “smooth
out” the analog output signal. A minimum value of “0 seconds” has no smoothing effect. A maximum value of “60
seconds” provides maximum smoothing. Deciding what output filter time to use is a compromise. The higher the filter
time, the longer the analog output signal response time will
be to a change in the measured value.
1.
screen displayed, press
With the
Ø key once to display
2.
Press
ENTER
key
.
to
display
a
screen
like
. Use arrow keys to adjust to a
desired filter time, and press ENTER key to enter it.
PRO-series Model C3 Conductivity Transmitter
44
Rev. 1-202
PART THREE - OPERATION
SET FAIL LEVEL Mode
(off, 4 mA or 20 mA)
SECTION 3 - TRANSMITTER CONFIGURATION
When a “WARNING CHECK STATUS” message appears,
indicating that a system problem may exist, the analog output can be set to respond in one of three ways:
• OFF: Output remains active.
• 4mA: Output automatically goes to and remains at 4 mA.
• 20mA: Output automatically goes to and remains at 20 mA.
To SET FAIL LEVEL mode to suit your application:
1.
With the
Ø key once to display
2.
Rev. 1-202
screen displayed, press
.
Press ENTER key to display
. Use
and keys to select a response mode (OFF, 4mA or
20mA), and press ENTER key to enter it.
Ø
×
45
PRO-series Model C3 Conductivity Transmitter
PART THREE - OPERATION
3.5 SET PASSCODE
(feature enabled
or disabled)
SECTION 3 - TRANSMITTER CONFIGURATION
The transmitter has a passcode feature to restrict access to
configuration settings and calibration to only authorized
personnel.
• DISABLED: With the passcode feature disabled, all configuration settings can be displayed and changed, and the
transmitter can be calibrated.
• ENABLED: With the passcode feature enabled, all configuration settings can be displayed -- but they cannot be
changed -- and the CALIBRATE and TEST/MAINT menus
cannot be accessed without the passcode. When you attempt to change a setting in the CONFIGURE menu by
pressing the ENTER key, a displayed notification requests passcode entry. A valid passcode entry saves the
changed setting and returns the display to the “MAIN
MENU” branch selection screen. An incorrect passcode
entry causes the display to momentarily show an error
notification before returning to the “MAIN MENU” branch
selection screen. There is no limit on attempts to enter a
valid passcode.
The passcode is factory set to “3 4 5 6.” It cannot be changed.
To enable or disable the passcode feature:
1.
Press MENU key to display a “MAIN MENU” screen.
If the
or
Ø × key to display it.
PRO-series Model C3 Conductivity Transmitter
screen is not showing, use
2.
Press ENTER key to display
.
3.
Press
Ø key once to display
.
4.
Press ENTER key to display
. Use
and
keys to select the desired passcode mode
(DISABLED or ENABLED), and press ENTER key to
enter it.
Ø
×
46
Rev. 1-202
PART THREE - OPERATION
SECTION 3 - TRANSMITTER CONFIGURATION
3.6 Configuration Setting
Summary
TABLE B lists all configuration settings and their entry
ranges/choices and factory defaults, categorized by basic
functions.
TABLE B -- Transmitter Configuration Settings (Ranges/Choices and Defaults)
Displayed Screen Title
Entry Range or Choices (where applicable)
Factory Default
Your Setting
LANGUAGE Setting
LANGUAGE?
ENGLISH and SPANISH (French, German,
etc. may be substituted for Spanish)
ENGLISH
SENSOR Settings
SELECT MEASURE?
CONDUCTIVITY, RESISTIVITY or TDS
CONDUCTIVITY
DISPLAY FORMAT?
(full scale value)
CONDUCTIVITY:
µS/cm: 2.000, 20.00, 200.0 or 2000
mS/cm: 2.000, 20.00 or 200.0
CONDUCTIVITY:
For 0.05 cell: 20.00 µS/cm
For 0.5 cell: 200.0 µS/cm
For 1.0 cell: 2000 µS/cm
For 5.0 cell: 20.00 mS/cm
For 10 cell: 200.0 mS/cm
RESISTIVITY: XX.XX MΩ • cm or XXX.X KΩ • cm
RESISTIVITY: XX.XX MΩ • cm
TDS: XXXX ppm or XXXX ppb
TDS: XXXX ppm
SET FILTER?
0-60 seconds
0 seconds
T-COMPENSATION?
LINEAR, AMMONIA, NATURAL WATER or
NONE
LINEAR at 2.00% per °C with
25.0°C reference temperature
CONFIG TDS:
SELECT FACTOR?
NaCl or USER DEFINED
NaCl
CONFIG TDS:
SET FACTOR?
0.01-99.99 ppm/µS
0.49 ppm/µS
CONFIG LINEAR:
SET SLOPE?
0-4.00% per °C
2.00% per °C
CONFIG LINEAR:
SET REF TEMP?
0-200.0°C or 32-392.0°F
25.0°C or 77.0°F
ENTER NOTE?
Replace COND with up to eight characters
COND
CELL CONSTANT:
SELECT CELL K?
0.0500, 0.1000, 0.5000, 1.000, 5.000 or
10.00
1.000
CELL CONSTANT
SET CELL K?
0.0500-10.00
1.000
TEMP ELEMENT:
SELECT TYPE?
PT1000 or MANUAL
PT1000
TEMP ELEMENT:
SET T FACTOR?
950-1050 ohms
1000 ohms
TEMP ELEMENT:
SET MANUAL?
0.0-200.0°C
25.0°C
TEMPERATURE Display Setting
SET °C OR °F?
°C or °F
°C
(TABLE B continued on next page.)
Rev. 1-202
47
PRO-series Model C3 Conductivity Transmitter
PART THREE - OPERATION
SECTION 3 - TRANSMITTER CONFIGURATION
TABLE B -- Transmitter Configuration Settings (Ranges/Choices and Defaults) -- continued
Displayed Screen Title
Entry Range or Choices (where applicable)
Factory Default
Your Setting
OUTPUT Settings
SET PARAMETER?
SENSOR or TEMPERATURE
SENSOR
SET 4mA VALUE?
CONDUCTIVITY:
µS/cm: 0-2.000, 0-20.00, 0-200.0 or 0-2000
mS/cm: 0-2.000, 0-20.00 or 0-200.0
CONDUCTIVITY:
0 µS/cm or 0 mS/cm
RESISTIVITY:
0-19.99 MΩ • cm or 0-999.9 KΩ • cm
RESISTIVITY:
0 MΩ or 0 KΩ • cm
TDS: 0-9999 ppm or 0-9999 ppb
TDS: 0 ppm or 0 ppb
TEMPERATURE:
-20.0 to +200.0°C or -4.0 to 392.0°F
TEMPERATURE:
0.0°C or 32.0°F
CONDUCTIVITY:
µS/cm: 0-2.000, 0-20.00, 0-200.0 or 0-2000
mS/cm: 0-2.000, 0-20.00 or 0-200.0
CONDUCTIVITY:
µS/cm: 2.000, 20.00, 200.0
or 2000
mS/cm: 2.000, 20.00 or
200.0
RESISTIVITY:
0-19.99 MΩ • cm or 0-999.9 KΩ • cm
RESISTIVITY:
19.99 MΩ or 999.9 KΩ • cm
TDS: 0-9999 ppm or 0-9999 ppb
TDS: 9999 ppm or 9999 ppb
TEMPERATURE:
-20.0 to +200.0°C or -4.0 to 392.0°F
TEMPERATURE:
200.0°C or 392.0°F
SET 20mA VALUE?
SET FILTER?
0-60 seconds
0 seconds
SET FAIL LEVEL?
OFF, 4mA or 20 mA
OFF
PASSCODE Setting
SET PASSCODE?
DISABLED or ENABLED
DISABLED
TEST/MAINT Simulation Function Settings
SELECT SIM?
SENSOR or TEMPERATURE
SENSOR
SIM SENSOR?
CONDUCTIVITY:
µS/cm: 0-2.000, 0-20.00, 0-200.0 or 0-2000
mS/cm: 0-2.000, 0-20.00 or 0-200.0
Present measured value of
selected parameter
RESISTIVITY:
0-19.99 MΩ • cm or 0-999.9 KΩ • cm
TDS: 0-9999 ppm or 0-9999 ppb
TEMPERATURE:
-20.0 to +200.0°C or -4.0 to 392.0°F
PRO-series Model C3 Conductivity Transmitter
48
Rev. 1-202
PART THREE - OPERATION
SECTION 4 - TRANSMITTER CALIBRATION
SECTION 4
TRANSMITTER CALIBRATION
4.1 Important Information
☞
Each contacting conductivity sensor has a unique zero point
and span. Consequently, always zero the sensor when
calibrating it for the first time (Section 4.2). Zeroing provides the best possible measuring accuracy. After zeroing,
calibrate for sensor span using GLI’s recommended DRYCAL method (Section 4.3). If desired, you can perform a
traditional wet calibration instead using the 1-POINT
SAMPLE method (Section 4.4).
Calibration Tip! Conductivity measurement is greatly
affected by small changes in temperature. To measure
temperature and conductivity more accurately, GLI highly
recommends using the DRY-CAL method to calibrate for
sensor span. (This is actually a normal part of configuring the sensor characteristics during initial startup.)
DRY-CAL eliminates the need for conductivity reference solutions. It also automatically sets the transmitter
measuring range to match the inherent range of the sensor’s cell constant. Furthermore, DRY-CAL eliminates
the need to periodically re-calibrate! The only requirement, depending on the application, may be
periodic cleaning of the sensor. Only when the sensor is
replaced is a new DRY-CAL calibration necessary.
The analog output loop can also be calibrated. Refer to
Section 4.5 for details.
☞
NOTE: When the passcode feature is enabled (Section
3.5), you must successfully enter the passcode
before attempting to calibrate the transmitter.
An in-progress calibration can always be aborted
by pressing the ESC key. After the “ABORT: YES?”
screen appears, do one of the following:
• Press ENTER key to abort. After the “CONFIRM
ACTIVE?” screen appears, press ENTER key to
return the analog output to its active state
(MEASURE screen appears).
×
Ø
• Press
or
key to choose “ABORT: NO?”
screen and press ENTER key to continue calibration.
Rev. 1-202
49
PRO-series Model C3 Conductivity Transmitter
PART THREE - OPERATION
SECTION 4 - TRANSMITTER CALIBRATION
☞
Zeroing/Calibration Tip! If a “CONFIRM FAILURE?”
screen appears during zeroing or calibration, press ENTER
key to confirm. Then, use
or
key to select between
“CAL: EXIT” or “CAL: REPEAT” and do one of the following:
× Ø
• With “(CAL: EXIT)” selected, press ENTER key. After
the “CONFIRM ACTIVE?” screen appears, press
ENTER key to return the analog output to its active
state (MEASURE screen appears).
• With “(CAL: REPEAT)” selected, press ENTER key to
repeat zeroing or calibration.
Zero the sensor if it is being calibrated for the first time. If
not, disregard this subsection and proceed with calibrating
the sensor span (Section 4.3 or Section 4.4).
4.2 Zero Procedure
(first-time sensor
calibration only)
☞
NOTE: After cleaning an existing sensor or when using a
new sensor, always perform a “RESET CALIBRATE” using the TEST/MAINT menu (PART
THREE, Section 5.8) before zeroing and calibrating.
1.
Make sure that the sensor is dry before zeroing.
2.
Press MENU key to display a “MAIN MENU” screen.
If the
or
Ø × key to display it.
PRO-series Model C3 Conductivity Transmitter
screen is not showing, use
3.
Press ENTER key to display
4.
Press ENTER key again to display
5.
Press
6.
Press ENTER key to display the “ZERO: IN DRY AIR?”
screen.
7.
With the dry sensor held in air, press ENTER key again
to start automatic zeroing. (During zeroing, the analog
output is automatically “held” at the last measured value.)
Ø key once to display
50
.
.
.
Rev. 1-202
PART THREE - OPERATION
SECTION 4 - TRANSMITTER CALIBRATION
8.
After the “ZERO: CONFIRM ZERO OK?” screen appears, press ENTER key to end zeroing.
9.
After the “ZERO: CONFIRM ACTIVE?” screen appears,
press ENTER key to return the analog output to its active state (MEASURE screen appears).
This completes zeroing the sensor.
4.3 DRY-CAL Method
(highly recommended)
Every GLI enhanced-performance contacting conductivity
sensor has two unique, GLI-certified values that must be
entered to complete a DRY-CAL calibration:
• Sensor CELL K value shown on a label attached to its
cable or to the inside cover of its optional junction box.
• Temperature T FACTOR shown on the same label.
(Since the inherent ohm value of the Pt 1000 RTD temperature element built into each sensor varies slightly,
GLI tests each sensor to provide its specific T FACTOR.)
If these two GLI-certified values were previously entered
during initial setup (Section 3.2 under their respective subheadings), DRY-CAL calibration is complete. If the certified
values have not been entered, use the steps in the following
“SELECT CELL K” and “SET T FACTOR” subsections.
SELECT CELL K
(sensor’s GLI-certified
“K” value)
Rev. 1-202
1.
Press MENU key to display a “MAIN MENU” screen.
If the
or
Ø × key to display it.
screen is not showing, Use
2.
Press ENTER key to display
3.
Press
4.
Press ENTER key to display
5.
Press
Ø key until
Ø key until
51
.
screen appears.
.
screen appears.
PRO-series Model C3 Conductivity Transmitter
PART THREE - OPERATION
SECTION 4 - TRANSMITTER CALIBRATION
6.
Press ENTER key to display
7.
Press ENTER key again to display a cell category selec-
.
×
Ø
and
tion screen like
. Use
keys to select the nominal cell category that corresponds to the sensor’s GLI-certified “K” value (shown
on label attached to sensor cable or to inside cover of
its optional junction box), and press ENTER key to enter it.
8.
After the
Ø key once to display
9.
screen re-appears, press
.
Press ENTER key to display a cell “K” value screen like
. Use arrow keys to adjust the
displayed value to exactly match the sensor’s GLIcertified “K” value, and press ENTER key to enter it.
SET T FACTOR
(sensor’s GLI-certified
“T” factor)
After entering the “K” value, complete DRY-CAL calibration
by entering the GLI-certified “T” factor:
1.
With the
ESC key once to display
screen displayed, press
.
2.
Press
Ø key once to display
.
3.
Press ENTER key to display
.
4.
Press
Ø key once to display
.
5.
Press ENTER key to display a “T” factor value screen
like
. Use arrow keys to adjust the
displayed value to exactly match the sensor’s GLIcertified “T” factor, and press ENTER key to enter it.
PRO-series Model C3 Conductivity Transmitter
52
Rev. 1-202
PART THREE - OPERATION
SECTION 4 - TRANSMITTER CALIBRATION
SPECIAL CASE -- ALTERED SENSOR CABLE LENGTH
Changing the standard 20 ft. (6 m) sensor cable length, by
shortening it or adding an interconnect cable, affects temperature measuring accuracy. The GLI-certified T FACTOR is based
on standard cable length. To compensate for altered cable
length measuring error, change the certified T FACTOR entry:
• Shortened Sensor Cable: To increase the transmitter temperature reading to match the known solution temperature,
decrease the T FACTOR by 3.85 ohms for each °C difference.
• Added Interconnect Cable: To decrease the transmitter temperature reading to match the known solution temperature,
increase the T FACTOR by 3.85 ohms for each °C difference.
Example: Suppose the known solution temperature is 50°C and
the transmitter reads 53°C due to interconnect cable resistance.
Multiply the 3°C difference by 3.85 ohms to get 11.55. Then increase the sensor T FACTOR by adding 11.55 to it and entering
that value. If, due to a shortened sensor cable, the transmitter
was reading 3°C less than the known solution temperature you
would decrease the sensor T FACTOR by subtracting 11.55
from it.
6.
After the
screen re-appears, press
MENU key once and then ESC key once to display the
MEASURE screen.
This completes GLI’s DRY-CAL calibration.
This “wet” calibration method requires you to immerse the
sensor into a properly prepared conductivity reference solution of known value, or to keep the sensor installed in the
process while obtaining a process sample. When keeping
the sensor installed, determine the process value by laboratory analysis or comparison reading. In either case, enter
the known reference solution or sample conductivity value.
4.4 1 POINT SAMPLE
Method
(wet calibration)
☞
Rev. 1-202
NOTE: After cleaning an existing sensor or when using a
new sensor, always perform a “RESET CALIBRATE” using the TEST/MAINT menu (PART
THREE, Section 5.8) before calibrating.
53
PRO-series Model C3 Conductivity Transmitter
PART THREE - OPERATION
SECTION 4 - TRANSMITTER CALIBRATION
1.
Depending on the situation, do one of the following:
■ When Keeping Sensor Installed:
Obtain a sample of the process solution and determine its value using laboratory analysis or a recently
calibrated portable meter.
■ When Immersing Sensor in Reference Solution:
A. Prepare a conductivity reference solution using
your normal method. Its value should be near
the typical measured process value for best accuracy. When the value is between 100 and
20,000 microSiemens/cm, the data in TABLE C
can be used to prepare the reference solution.
Add the listed grams of pure, dried NaCl to one
liter of high purity, de-ionized, CO2-free water
that is 25°C to obtain the listed conductivity.
Solution conductivity can be decreased by dilution with de-ionized water.
TABLE C -- Conductivity Reference Solutions
µS/cm
100
200
500
1000
2000
3000
4000
5000
8000
10,000
20,000
Desired Solution Value
mS/cm
ppm (NaCl)*
0.10
50
0.20
100
0.50
250
1.00
500
2.00
1010
3.00
1530
4.00
2060
5.00
2610
8.00
4340
10.00
5560
20.00
11,590
Grams NaCl
To Be Added
0.05
0.10
0.25
0.50
1.01
1.53
2.06
2.61
4.34
5.56
11.59
*When using ppm measuring scale for compounds other than
NaCl, refer to appropriate chemistry handbook for reference
solution formulation.
B. Thoroughly rinse the clean sensor in de-ionized
water. Then fully immerse the sensor electrodes
in the prepared reference solution. Important:
Allow the sensor and solution temperatures
to equalize. Depending on their temperature
differences, this may take a few minutes.
☞
PRO-series Model C3 Conductivity Transmitter
NOTE: Suspend the sensor to prevent its electrodes from touching the container.
Remove any bubbles clinging to the
54
Rev. 1-202
PART THREE - OPERATION
SECTION 4 - TRANSMITTER CALIBRATION
outer and center electrodes by gently
stirring the sensor in the solution. Sensors with a deeper recessed center
electrode require more vigorous stirring.
2.
Press MENU key to display a “MAIN MENU” screen.
If the
or
Ø × key to display it.
screen is not showing, use
3.
Press ENTER key to display
4.
Press ENTER key again to display
5.
Press ENTER key again to display
.
With the sensor in the process (or conductivity reference solution), press ENTER key to confirm. This
active
measurement reading.
☞
.
.
screen appears showing the
NOTE: During calibration, the analog output is automatically “held” at the last measured value.
6.
Wait for the reading to stabilize which may take a few
minutes. Then press ENTER key. The “PLEASE WAIT”
screen may appear if the reading is still too unstable.
After the reading has stabilized, this static
screen appears showing the “last
measured” value.
7.
Use arrow keys to adjust the displayed value to
exactly match the known value of the process sample
(or reference solution).
8.
Press ENTER key to enter the value and complete calibration (“CONFIRM CAL OK?” screen appears).
9.
If the sensor was immersed in a reference solution, reinstall the sensor into the process.
10. Press ENTER key to display the active measurement
reading on the “1 POINT SAMPLE: CONFIRM ACTIVE?” output status screen. When the reading cor-
Rev. 1-202
55
PRO-series Model C3 Conductivity Transmitter
PART THREE - OPERATION
SECTION 4 - TRANSMITTER CALIBRATION
responds to the actual typical process value, press
ENTER key again to return the analog output to its active state (MEASURE screen appears).
This completes “1 POINT SAMPLE” calibration.
4.5 Analog Output
Calibration
The transmitter analog output is factory-calibrated. However, it can be re-calibrated if desired.
☞
NOTE: When the passcode feature is enabled (Section
3.5), you must successfully enter the passcode
before attempting to calibrate the analog output.
Also, the transmitter adjustment range for output
values during calibration is ± 2 mA.
1.
Press MENU key to display a “MAIN MENU” screen.
If the
or
Ø × key to display it.
screen is not showing, use
2.
Press ENTER key to display
.
3.
Press
Ø key once to display
.
4.
Press ENTER key to display
.
5.
Press ENTER key again to display a screen like
. The displayed value is “counts” -not mA -- that dynamically change as the output is adjusted.
6.
PRO-series Model C3 Conductivity Transmitter
Connect a calibrated digital multimeter in series with
the loop load to measure the actual minimum mA output
in the loop.
56
Rev. 1-202
PART THREE - OPERATION
SECTION 4 - TRANSMITTER CALIBRATION
7.
Use arrow keys to adjust the minimum output value to
read exactly “4.00 mA” on the digital multimeter -- not
the transmitter display, and press ENTER key to complete calibration of the minimum endpoint value.
8.
After the
screen re-appears, press
Ø key once to display
9.
Press
ENTER
key
.
to
display
a
screen
like
. Once again, the displayed value
is “counts” -- not mA -- that dynamically change as the
output is adjusted.
10. Now measure the actual maximum mA output in the
loop with the digital multimeter.
11. Use arrow keys to adjust the maximum output value to
read exactly “20.00 mA” on the digital multimeter -- not
the transmitter display, and press ENTER key to complete calibration of the maximum endpoint value.
This completes analog output calibration.
Rev. 1-202
57
PRO-series Model C3 Conductivity Transmitter
PART THREE - OPERATION
SECTION 5 - TEST/MAINTENANCE
SECTION 5
TEST/MAINTENANCE
The transmitter has TEST/MAINT menu screens to:
• Check operating status of the transmitter and sensor.
• Hold analog output at its last measured value.
• Provide analog output test signal to confirm operation
of connected device.
• Identify transmitter firmware EPROM version.
• Simulate a measurement or temperature signal to
exercise the measurement loop.
• Reset configuration -- not calibration -- values to defaults.
• Reset calibration -- not configuration -- values to defaults.
☞
5.1 STATUS Check
(transmitter and
sensor)
NOTE: When the passcode feature is enabled (Section
3.5), you must successfully enter the passcode
before attempting to use the TEST/MAINT menu
screens.
The system diagnostic capabilities of the transmitter enable
you to check the operating status of the transmitter and
sensor. The MEASURE screen will flash the “WARNING
CHECK STATUS” message when a system diagnostic “fail”
condition has been detected. To determine the condition
causing the warning, display the “STATUS” screens.
1.
Press MENU key to display a “MAIN MENU” screen.
If the
or
Ø × key to display it.
screen is not showing, use
2.
Press ENTER key to display
3.
Press ENTER key again to display “STATUS: ANALYZER
OK” screen. This screen confirms that the transmitter is
operating properly. If “FAIL” appears, it may mean:
.
• Analog-to-digital converter not responding.
• Internal serial communications failure.
PRO-series Model C3 Conductivity Transmitter
58
Rev. 1-202
PART THREE - OPERATION
SECTION 5 - TEST/MAINTENANCE
4.
Press ENTER key once to view “STATUS: SENSOR
OK” screen. If “FAIL” appears, it indicates that the sensor cable wires or terminals are shorted.
5.
Press ENTER key once to view the “STATUS: TEMP
OK” screen. If “FAIL” appears, it indicates that the
PT1000 RTD temperature element in the sensor is inoperative, disconnected or incorrectly wired.
6.
To end status checking, press ESC key or ENTER key
(display returns to previous level of TEST/MAINT menu
branch).
The HOLD OUTPUT function conveniently holds the analog
output at its last measured value for up to 30 minutes to
suspend operation of any connected device.
5.2 HOLD OUTPUT
1.
With the
Ø key once to display
2.
☞
Press ENTER key to immediately hold the analog
output (“HOLD OUTPUT: ENTER TO RELEASE”
screen appears, acknowledging hold is applied).
To release the hold at any time and return the analog
output back to its “active” state, press ENTER key (display returns to previous level of TEST/MAINT menu
branch).
The OUTPUT function provides an analog output test signal
of a desired mA value to confirm operation of a connected
device.
1.
With the
Ø key until
Rev. 1-202
.
NOTE: If the keypad is not used within 30 minutes, the
analog output will automatically change back to
its active state and the display will return to the
MEASURE screen.
3.
5.3 OUTPUT Test Signal
screen displayed, press
59
screen displayed, press
screen appears.
PRO-series Model C3 Conductivity Transmitter
PART THREE - OPERATION
SECTION 5 - TEST/MAINTENANCE
2.
Press
ENTER
key
to
display
a
screen
like
.
☞
5.4 Firmware (EPROM
VERSION) Check
NOTE: The mA output test signal is now active. Its
value is shown on this screen.
3.
Use arrow keys to adjust the displayed value to obtain
the desired mA test signal.
4.
To remove the output test signal and return to the previous level of the TEST/MAINT menu branch, press
ESC key or ENTER key.
The EPROM VERSION function checks the version of firmware used in the transmitter.
1.
screen displayed, press
With the
Ø key until
5.5 SELECT SIM
Measurement
screen appears.
2.
Press ENTER key to view the EPROM version screen.
3.
To return to the previous level of the TEST/MAINT
menu branch, press ESC key or ENTER key.
The SELECT SIM function selects a type of simulated
measurement. It is used in conjunction with the SIM
SENSOR function (Section 5.6) to simulate a measured
value, making the analog output respond accordingly.
1.
With the
screen displayed, press
Ø key until
2.
Press
ENTER
screen appears.
key
to
display
Ø
a
screen
like
×
and
keys to select the
. Use
type of simulated measurement, and press ENTER key
to enter it:
PRO-series Model C3 Conductivity Transmitter
60
Rev. 1-202
PART THREE - OPERATION
SECTION 5 - TEST/MAINTENANCE
• SENSOR: Selects simulated measurement to be
the configured measurement (conductivity, resistivity or TDS).
• TEMPERATURE: Selects simulated measurement
to be temperature.
5.6 SIM SENSOR Setting
After selecting the type of simulated measurement (Section
5.5), use the SIM SENSOR function to set the desired
simulation value.
1.
With the
screen displayed, press
Ø key once to display
2.
Press
ENTER
key
.
to
display
a
screen
like
.
☞
5.7 RESET CONFIGURE
Values to Factory
Defaults
☞
Rev. 1-202
NOTE: The analog output signal is now active. It has a
mA value that corresponds to the measurement
value shown on this screen.
3.
Use arrow keys to adjust the displayed simulation
value to the desired value.
4.
To remove the simulated output and return to the previous level of the TEST/MAINT menu branch, press ESC
key or ENTER key.
The RESET CONFIGURE function resets stored configuration settings (all at the same time) -- but not calibration
settings -- to their factory-set defaults shown in TABLE B.
NOTE: Resetting configuration values also excludes the
SELECT MEASURE function (conductivity, resistivity or TDS) which remains as is until you change it.
61
PRO-series Model C3 Conductivity Transmitter
PART THREE - OPERATION
SECTION 5 - TEST/MAINTENANCE
1.
With the
Ø key until
5.8 RESET CALIBRATE
Values to Factory
Defaults
screen appears.
2.
Press ENTER key to display the “RESET CONFIGURE:
ARE YOU SURE?” screen, asking if you really intend to
perform this extreme action. (To abort this procedure,
press ESC key now.)
3.
Press ENTER key to reset stored configuration settings
-- not calibration settings -- to factory defaults. The
“RESET CONFIGURE: DONE” screen appears, acknowledging that reset has occurred.
4.
To return to the previous level of the TEST/MAINT
menu branch, press ESC key or ENTER key.
The RESET CALIBRATE function resets all stored calibration settings -- but not configuration settings -- to factoryset defaults.
1.
With the
Ø key until
PRO-series Model C3 Conductivity Transmitter
screen displayed, press
screen displayed, press
screen appears.
2.
Press ENTER key to display the “RESET CALIBRATE:
ARE YOU SURE?” screen, asking if you really intend to
perform this extreme action. (To abort this procedure,
press ESC key now.)
3.
Press ENTER key to reset all stored calibration settings
-- not configuration settings -- to factory defaults. The
“RESET CALIBRATE: DONE” screen appears, acknowledging that reset has occurred.
4.
To return to the previous level of the TEST/MAINT
menu branch, press ESC key or ENTER key.
62
Rev. 1-202
PART FOUR - SERVICE AND MAINTENANCE
SECTION 1 - GENERAL INFORMATION
PART FOUR - SERVICE AND MAINTENANCE
SECTION 1
GENERAL INFORMATION
If a measurement problem exists and you suspect the sensor cable, inspect it for physical damage. If an interconnect
cable is used, disconnect the cable at both ends (sensor
and transmitter) and, using an ohmmeter, check its wires for
continuity and internal shorts.
SECTION 2
PRESERVING MEASUREMENT ACCURACY
2.1 Keeping Sensor Clean
To maintain measurement accuracy, periodically clean the
sensor. Operating experience will help you determine when
to clean the sensor (daily, weekly or monthly intervals). Use
the recommended cleaning procedure described in the GLI
contacting conductivity sensor operating manual.
2.2 Keeping Transmitter
Calibrated
If the DRY-CAL method (PART THREE, Section 4.3) was
used to calibrate sensor span, re-calibration is only needed
when the sensor is replaced. If sensor span was calibrated using the 1 POINT SAMPLE method, you must
periodically re-calibrate. In either case, always calibrate
when replacing the sensor.
☞
2.3 Avoiding Electrical
Interference
☞
Rev. 1-202
NOTE: If your measuring application requires utmost accuracy, GLI offers a re-certification service to verify a
used sensor’s “K” value and temperature “T” factor.
For details, call your local GLI representative or GLI
Customer Service.
Recommendation: Do not run the sensor cable (and interconnect cable, if used) in the same conduit with AC or DC
power wiring. Also, connect cable shielding as recommended (PART TWO, Section 3.1).
Maintenance Tip! Excess cable should not be coiled
near motors or other equipment that may generate electrical or magnetic fields. Cut cables to proper length
during installation to avoid unnecessary inductive pickup
(“electrical noise” may interfere with sensor signal).
63
PRO-series Model C3 Conductivity Transmitter
PART FOUR - SERVICE AND MAINTENANCE
SECTION 3 - TROUBLESHOOTING
SECTION 3
TROUBLESHOOTING
3.1 Ground Loops
The transmitter may be affected by a “ground loop” problem
(two or more electrically grounded points at different potentials).
Symptoms Indicating a Possible Ground Loop
• Transmitter reading is offset from the actual value by a
consistent amount, or ....
• Transmitter reading is frozen on one value, or ....
• Transmitter reading is “off scale” (upscale or downscale).
Although the source of a ground loop is difficult to determine, there are several common causes.
Common Causes of a Ground Loop
• Components, such as recorders or computers, are
connected to non-isolated analog outputs.
• Not using shielded cabling or failure to properly connect
all cable shields.
• Moisture or corrosion in a junction box.
Determining if
Ground Loop Exists
PRO-series Model C3 Conductivity Transmitter
The following simple test can help to determine if there is a
ground loop:
1.
With the conductivity MEASURE screen displayed, immerse the sensor in a non-conductive container (plastic
or glass) filled with solution of a known conductivity
value. Note the transmitter reading for this solution.
2.
Connect one end of a wire to a known earth ground
such as a metal water pipe. Place the other end of this
wire into the reference solution next to the sensor.
3.
Note the transmitter reading now and compare it with
the reading taken in step 1. If the reading changed, a
ground loop exists.
64
Rev. 1-202
PART FOUR - SERVICE AND MAINTENANCE
Finding Source
of Ground Loop
☞
3.2 Isolating Measuring
System Problem
Checking
Electrical Connections
Verifying
Sensor Operation
Verifying
Transmitter Operation
Rev. 1-202
SECTION 3 - TROUBLESHOOTING
Sometimes the source of a ground loop is easy to find, but it
usually takes an organized approach to isolate the problem.
Troubleshooting Tip! Use a systematic troubleshooting
method. If possible, start by grounding all shields and
electrical grounds at one stable point. One at a time, turn
off all pumps, motors, and switches that are in contact
with the process. Each time you do this, check if the
ground loop still exists. Since the process media being
measured is electrically conductive, the source of the
ground loop may not be readily apparent.
When experiencing problems, try to determine the primary
measurement system component causing the problem (sensor, transmitter or interconnect cable, if used).
1.
Verify that adequate DC voltage exists at the appropriate transmitter TB1 terminals.
2.
Check all transmitter wiring to ensure proper connections.
To verify sensor operation, refer to the procedure in the
troubleshooting section of the sensor operating manual. Or
replace the suspect sensor with a known new or working
sensor and perform calibration.
1.
After disconnecting DC power from the transmitter, disconnect the sensor (and interconnect cable, if used).
Then connect a 1% tolerance, 1097 ohm resistor between Terminals 4 (white) and 5 (blue) on TB2.
2.
Depending on the configured sensor cell constant,
measuring units, and range, use the listed resistance in
TABLE D (1% tolerance resistor or decade box) and
connect it between Terminals 1 (red) and 7 (black) on
TB2.
65
PRO-series Model C3 Conductivity Transmitter
PART FOUR - SERVICE AND MAINTENANCE
SECTION 3 - TROUBLESHOOTING
TABLE D -- Full-Scale Equivalent Test Resistance Values
Configured
Display Format
0.05 (see Note 1)
0-2.000 µS/cm
25 KΩ
0-20.00 µS/cm
2.5 KΩ
not applicable
0-200.0 µS/cm
Configured “Nominal” Cell Constant
0.5
1
5
For Conductivity Measurement
not applicable
not applicable
not applicable
not applicable
25 KΩ
not applicable
not applicable
not applicable
5 KΩ
not applicable
not applicable
0-2000 µS/cm
not applicable
2.5 KΩ
not applicable
0-2.000 mS/cm
not applicable
not applicable
500 KΩ
not applicable
0-20.00 mS/cm
not applicable
not applicable
0-200.0 mS/cm
not applicable
not applicable
2.5 KΩ
5 KΩ
not applicable
2.5 KΩ
not applicable
5 KΩ
500 Ω
not applicable
not applicable
50 Ω
For Resistivity Measurement
not applicable
not applicable
0-19.99 MΩ z cm
0-999.9 KΩ z cm
50 KΩ
0-9999 ppm
3.2 Ω
32 Ω
0-9999 ppb
3.2 KΩ
32 KΩ
1 MΩ
10
not applicable
not applicable
not applicable
not applicable
not applicable
64 Ω
320 Ω
640 Ω
64 KΩ
320 KΩ
640 KΩ
not applicable
For TDS Measurement
NOTE 1: When measuring ultrapure water as conductivity (less than 1.00 microSiemens/cm), an 877 KΩ resistance will display
0.057 µS/cm. When measuring ultrapure water as resistivity, a 910 KΩ resistance will display 18.2 MΩ z cm.
3.
Reconnect DC power to the transmitter.
4.
Verify that the transmitter conductivity reading is fullscale for the applicable range. Also, verify that the
transmitter temperature reading is 0°C.
If these readings are achieved, the transmitter is operating
properly, but the interconnect cable (if used) may be faulty.
Verifying Interconnect
Cable Integrity
PRO-series Model C3 Conductivity Transmitter
1.
Disconnect DC power and the resistors or decade box
from the transmitter.
2.
Reconnect the sensor directly to the transmitter (purposely bypassing the interconnect cable and junction
box, if used).
3.
Place the sensor in a container of known value conductivity reference solution that is at room temperature.
4.
Reconnect DC power to the transmitter.
5.
Verify that the transmitter conductivity reading is the
same as the known reference solution value. If the
reading is achieved, the interconnect cable and/or junction box connections are probably faulty. Use a digital
multi-meter to check the interconnect cable for shorted
or open wires.
66
Rev. 1-202
PART FOUR - SERVICE AND MAINTENANCE
SECTION 4 - TRANSMITTER REPAIR/RETURN
SECTION 4
TRANSMITTER REPAIR/RETURN
4.1 Customer Assistance
If you need assistance in troubleshooting or repair service,
please contact your local GLI representative, or GLI Customer Service at:
GLI International, Inc.
9020 West Dean Road
Milwaukee, WI 53224
Phone: [800] 543-8907
Fax:
[414] 355-8346
E-mail: info@gliint.com
 GLI CUSTOMER SERVICE HOURS 
Monday
through
Thursday
Friday
4.2 Repair/Return Policy
Eastern
Std. Time
8:30 a.m.
to
5:30 p.m.
8:30 a.m.
to
4:00 p.m.
Central
Std. Time
7:30 a.m.
to
4:30 p.m.
7:30 a.m.
to
3:00 p.m.
Mountain
Std. Time
6:30 a.m.
to
3:30 p.m.
6:30 a.m.
to
2:00 p.m.
Pacific
Std. Time
5:30 a.m.
to
2:30 p.m.
5:30 a.m.
to
1:00 p.m.
Call GLI Customer Service before returning a transmitter for
repair. Many problems can be diagnosed and resolved over
the telephone. GLI will issue a Return Material Authorization (RMA) number for a transmitter being returned. All returned transmitters must be freight prepaid and include:
1. A clearly written description of the malfunction.
2. Name of person to contact and the phone number where
they can be reached.
3. Proper return address to ship transmitter back. Include
preferred shipping method (UPS, Federal Express, etc.)
if applicable.
4. A purchase order if transmitter is out of warranty to
cover costs of repair.
☞
NOTE: If the transmitter is damaged during return shipment
because of inadequate packaging, the customer is
responsible for any resulting repair costs.
(Recommendation: Use the original GLI shipping
carton or an equivalent.)
Also, GLI will not accept transmitters returned for
repair or replacement unless they are thoroughly
cleaned and all process material is removed.
Rev. 1-202
67
PRO-series Model C3 Conductivity Transmitter
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