GLI International C33 User manual

Rev. 0-201 PRO-series Model C3 Conductivity Transmitter
1
OPERATING MANUAL
PRO-series Model C33
Conductivity Transmitter
(for conductivity, resistivity, and TDS measurement)
Worldwide Headquarters and Sales:
GLI International, Inc.
9020 West Dean Road
Milwaukee, Wisconsin 53224
U.S.A.
Represented By:
In the interest of improving and updating its equipment, GLI reserves the right to alter specifications to equipment at any time.
A company
Viridor Instrumentation
Phone:
Fax:
E-mail:
Web:
[414] 355-3601
[414] 355-8346
[e-mail]
www.gliint.com

PRO-series Model C3 Conductivity Transmitter Rev. 0-201
2
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.

Rev. 0-201 PRO-series Model C3 Conductivity Transmitter
3
IMPORTANT SAFETY INFORMATION
This transmitter is compliant with safety standards as outlined in:
FMRC Class Numbers 3600, 3611, and 3810 (U.S.A.)
CSA C22.2 No. 142 and C22.2 No. 213 (Canada)
EN 61010-1 (European Community)
Please read and observe the following:
•The transmitter (not intrinsically safe) must always be located in a safe (non-hazardous) area.
•Since the transmitter is powered by only low DC voltage, it is completely safe to handle.
•Wiring or repairs should only be performed by qualified personnel, and only when transmitter is unpowered.
•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).
•Installed this 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.
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 Rev. 0-201
4
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 deter-
mines 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 Inter-
national, freight prepaid, for examination. The product must be thoroughly
cleaned and any process chemicals removed before it will be accepted for re-
placement or repair. GLI International’s liability shall not exceed the cost of the
product. Under no circumstances will GLI International be liable for any inciden-
tal 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.

Rev. 0-201 PRO-series Model C3 Conductivity Transmitter
5
CONDENSED OPERATING INSTRUCTIONS
This manual contains details for all operating aspects of the instrument. The following condensed in-
structions 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 opera-
tion. 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 enhanced
performance contacting conductivity sensor, matching wire colors to terminals as indicated:
Sensor Wire Colors Connect To TB2
Red Terminal 1
No connection (unused) Terminal 2
Inner and Outer Shield Wires Terminal 3
White Terminal 4
Blue Terminal 5
No connection (unused) Terminal 6
Black Terminal 7
2. The transmitter is supplied factory-set for automatic temperature compensation using the Pt
1000 ohm temperature element built into GLI enhanced performance contacting conductivity
sensors. For fixed MANUAL temperature compensation, you must change the temperature ele-
ment type (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 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 offset. Conse-
quently, 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 to each sensor.
(continued on next page)

PRO-series Model C3 Conductivity Transmitter Rev. 0-201
6
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 at any time during zeroing, the “ZERO: CONFIRM FAILURE?”screen ap-
pears, press ENTER key to confirm. Then, use the
×
×
or
Ø
Ø
key to select between “CAL:
EXIT”or “CAL: REPEAT”and do one of the following:
•With the “ZERO? (CAL: EXIT)”screen selected, press ENTER key. After the “ZERO:
CONFIRM ACTIVE?”screen appears, press ENTER key 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 screen is not
showing, use
×
×
or
Ø
Ø
key to display it.
C. Press ENTER key to display .
D. Press ENTER key again to display .
E. Press
Ø
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 ZERO 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
Ø
key once to display .
4. Press ENTER key to display .
5. Press
Ø
Ø
key until screen appears.
6. Press ENTER key to display .
7. Press
Ø
Ø
key until screen appears.
(continued on next page)

Rev. 0-201 PRO-series Model C3 Conductivity Transmitter
7
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
Ø
Ø
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 op-
tional junction box. Then press ENTER key to enter the selection.
10. After the screen re-appears, press
Ø
Ø
key once to display .
11. Press ENTER key to display a “CELL K”value screen like . Adjust the dis-
played value to exactly match the sensor’s GLI-certified “CELL K”value. (Use
Ö
Ö
and
Õ
Õ
keys to
select digit, and
×
×
and
Ø
Ø
keys to adjust its value.) Then press ENTER key to enter the value.
12. After the screen re-appears, press ESC key once to display .
13. Press
Ø
Ø
key once to display .
14. Press ENTER key to display .
15. Press
Ø
Ø
key once to display .
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
Ö
Ö
and
Õ
Õ
keys to
select digit, and
×
×
and
Ø
Ø
keys to adjust its value.) Then press ENTER key to enter the value.
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 con-
stant. For a listing of sensor cell constants and their inherent measuring ranges, see Table A
in PART THREE, Section 3.2,
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.

PRO-series Model C3 Conductivity Transmitter Rev. 0-201
8

Rev. 0-201 PRO-series Model C3 Conductivity Transmitter
9
TABLE OF CONTENTS
PART ONE - INTRODUCTION
SECTION 1 GENERAL INFORMATION
1.1 Capability Highlights ........................................................................13-14
1.2 Transmitter Safety .................................................................................14
1.3 Retained Configuration Values .............................................................14
1.4 Transmitter Serial Number ....................................................................14
1.5 EMI/RFI 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 ................................................21-22
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

PRO-series Model C3 Conductivity Transmitter Rev. 0-201
10
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
(not needed for other measurements) ...................................37-38
CONFIG LINEAR Temperature Compensation (config-
uration not needed for other compensation methods)...........38-39
ENTER NOTE (top line of MEASURE screen)............................39-40
SELECT CELL K (sensor’s GLI-certified “K”value) ....................40-41
Select TEMP ELEMENT Type ....................................................41-42
SET T FACTOR (sensor’s GLI-certified “T”factor) .....................42-43
3.3 SET °C OR °F (temperature display format) .........................................43
3.4 Configuring Analog Output:
SET PARAMETER (representation) ................................................44
SET 4 mA and 20 mA VALUES (range expand) .........................44-45
SET FILTER Time............................................................................45
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 Checking (transmitter and sensor) ....................................58-59
5.2 HOLD OUTPUT.....................................................................................59
5.3 OUTPUT Test Signal........................................................................59-60
5.4 Firmware (EPROM VERSION) Checking ..............................................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

Rev. 0-201 PRO-series Model C3 Conductivity Transmitter
11
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

PRO-series Model C3 Conductivity Transmitter Rev. 0-201
12
TABLE OF CONTENTS (continued)
ILLUSTRATIONS
Figure 1-1 EMI/RFI Immunity 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

PART ONE - INTRODUCTION SECTION 1 - GENERAL INFORMATION
Rev. 0-201 PRO-series Model C3 Conductivity Transmitter
13
PART ONE - INTRODUCTION
SECTION 1
1.1 Capability Highlights
Sensor Input
MEASURE Screen
Passcode-protected
Access
Calibration Methods
Analog Output
☞
The transmitter can be used with any GLI Model 3400-
series 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
Õ
Õ
or Ö
Ö
key to show:
•Measured conductivity, resistivity or TDS
•Measured temperature (°C or °F)
•Measured conductivity, resistivity or TDS, and temperature
•Measured analog output value (mA).
For security, you can enable a passcode feature to restrict ac-
cess to configuration and calibration settings to authorized
personnel only. See PART THREE, Section 3.5 for details.
It is highly recommended to calibrate the transmitter using
GLI’s simple DRY-CAL method, which eliminates the need
to prepare a reference solution. However, the transmitter
can be traditionally “wet”calibrated. For calibration details,
refer to PART THREE, Sections 4.2 and 4.3 or 4.4. The analog
output loop can also be calibrated (Section 4.4).
The transmitter’s isolated 4-20 mA analog output can be
assigned to represent one of these measurements:
•Measured conductivity, 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 de-
sired (range expand). For output setup details, see PART
THREE, Section 3.4.
NOTE: During calibration, the analog output is automati-
cally held at the last measured value and, upon
completion, returned to its active state.
GENERAL INFORMATION

PART ONE - INTRODUCTION SECTION 1 - GENERAL INFORMATION
PRO-series Model C3 Conductivity Transmitter Rev. 0-201
14
1.2 Transmitter Safety
1.3 Retained
Configuration Values
1.4 Transmitter
Serial Number
1.5 EMI/RFI Conformance
The transmitter is completely safe to handle. Only low DC
voltage is present.
WARNING:
ALWAYS LOCATE THE TRANSMITTER IN A SAFE
AREA. IT IS NOT DESIGNED INTRINSICALLY SAFE.
All user-entered configuration values are retained indefi-
nitely, even if power is lost or turned off. The non-volatile
transmitter memory does not require battery backup.
A label with the transmitter model number, serial number,
and build date is located on its enclosure.
The transmitter is designed to provide protection from most
normally encountered electromagnetic interference. This
protection exceeds U.S. standards and meets European
IEC 801-series testing for electromagnetic and radio fre-
quency emissions and susceptibility. Refer to Figure 1-1
and the specifications in Section 2.1 for more information.
EMISSIONS SUSCEPTIBILITY
FIGURE 1-1 EMI/RFI Immunity Diagram

PART ONE - INTRODUCTION SECTION 2 - SPECIFICATIONS
Rev. 0-201 PRO-series Model C3 Conductivity Transmitter
15
SECTION 2
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 or Pt 100 ohm RTD temperature
element, or manually fixed at a user-entered
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 temp. properties table,
built-in natural water temp. properties table, or no compensation
Sensor-to-Transmitter Distance.. 300 ft. (91 m) maximum
Power Requirements:
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 description above (for conductivity)
TDS Measurement:
DRY-CAL......................... See description above (for conductivity)
1-POINT SAMPLE ........... See description above (for conductivity)
SPECIFICATIONS

PART ONE - INTRODUCTION SECTION 2 - SPECIFICATIONS
PRO-series Model C3 Conductivity Transmitter Rev. 0-201
16
2.2 Transmitter Performance
(Electrical, Analog Outputs)
2.3 Mechanical
Analog Output............................ Isolated 4-20 mA output with 0.004 mA
(12-bit) resolution
NOTE: The output can be assigned to represent the selected measurement
(conductivity, resistivity or TDS) or 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 with-
out battery backup
EMI/RFI Conformance................ Exceeds US and meets European standards
for conducted and radiated emissions and
immunity; certified CE compliant for applica-
tions as specified by EN 50081-2 for
emissions and EN 50082-2 for immunity
Electrical Certifications:
General Purpose (pending) ..... UL, C-UL, FM, and CENELEC
Class 1, Div. 2 (pending)......... UL, C-UL, and FM: Groups A, B, C, D, F, and G
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.
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

PART TWO - INSTALLATION SECTION 1 - UNPACKING
Rev. 0-201 PRO-series Model C3 Conductivity Transmitter
17
PART TWO - INSTALLATION
SECTION 1
After unpacking, it is recommended to save the shipping
carton and packing materials in case the instrument must be
stored or re-shipped. Inspect the equipment and packing
materials for signs of shipping damage. If there is any evi-
dence of damage, notify the transit carrier immediately.
SECTION 2
2.1 Location 1. It is recommended to locate the transmitter as close as
possible to the installed sensor. The maximum allow-
able distance between an installed sensor and the
transmitter is 300 ft. (91 m).
WARNING:
ALWAYS LOCATE THE TRANSMITTER IN A SAFE
(NON-HAZARDOUS) AREA. THE TRANSMITTER
IS NOT INTRINSICALLY SAFE.
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.
UNPACKING
MECHANICAL REQUIREMENTS

PART TWO - INSTALLATION SECTION 2 - MECHANICAL REQUIREMENTS
PRO-series Model C3 Conductivity Transmitter Rev. 0-201
18
2.2 Wall and Pipe
Mounting
Figure 2-1 illustrates how to wall or pipe mount the trans-
mitter 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 screw to lock back
cover onto adapter.
4. Attach transmitter to back cover using its four captive screws.
FIGURE 2-1 Wall and Pipe Mounting Details

PART TWO - INSTALLATION SECTION 2 - MECHANICAL REQUIREMENTS
Rev. 0-201 PRO-series Model C3 Conductivity Transmitter
19
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 pro-
vided in hardware kit.
FIGURE 2-2 Panel Mounting Details

PART TWO - INSTALLATION SECTION 2 - MECHANICAL REQUIREMENTS
PRO-series Model C3 Conductivity Transmitter Rev. 0-201
20
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 appropri-
ately-sized coupling that you provide.
3. Insert-and-twist back cover onto installed swivel-mount
assembly, and tighten its screw to lock back cover onto
swivel-mount assembly.
NOTE: To change mounting angle, loosen swivel-mount
assembly by lifting tab on bottom of swivel nut. Posi-
tion to desired angle and re-tighten swivel nut.
4. Attach transmitter to back cover using its four captive screws.
FIGURE 2-3 Integral Sensor Mounting Details