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GLI International C33 Operating Manual

Pro-series conductivity transmitter
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Worldwide Headquarters and Sales:
GLI International, Inc.
9020 West Dean Road
Milwaukee, Wisconsin 53224
U.S.A.
In the interest of improving and updating its equipment, GLI reserves the right to alter specifications to equipment at any time.
Rev. 0-201
GLI_CondTransmitter_C33_om_D201
OPERATING MANUAL
PRO-series Model C33
Conductivity Transmitter
(for conductivity, resistivity, and TDS measurement)
Phone:
[414] 355-3601
Fax:
[414] 355-8346
E-mail:
info@gliint.com
Web:
www.gliint.com
A
Viridor Instrumentation
Represented By:
company
PRO-series Model C3 Conductivity Transmitter
1

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  • Page 1 Back to MANUALS Menu GLI_CondTransmitter_C33_om_D201 OPERATING MANUAL PRO-series Model C33 Conductivity Transmitter (for conductivity, resistivity, and TDS measurement) Worldwide Headquarters and Sales: Represented By: Phone: [414] 355-3601 GLI International, Inc. Fax: [414] 355-8346 9020 West Dean Road E-mail: info@gliint.com Milwaukee, Wisconsin 53224 Web: www.gliint.com...
  • Page 2 Back to MANUALS Menu 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.

  • Page 3: Important Safety Information

    Back to MANUALS Menu 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: •...
  • Page 4 Back to MANUALS Menu 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...
  • Page 5 Back to MANUALS Menu 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.
  • Page 6 Back to MANUALS Menu 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- ×...
  • Page 7 Back to MANUALS Menu 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 × × Ø Ø keys to select the nominal cell category that corresponds to the sensor’s GLI-certified “CELL K”...
  • Page 8 Back to MANUALS Menu PRO-series Model C3 Conductivity Transmitter Rev. 0-201...

  • Page 9: Table Of Contents

    Back to MANUALS Menu T A B L E C O N T E N T S P A R T O N E - I N T R O D U C T I O N SECTION 1 GENERAL INFORMATION 1.1 Capability Highlights ................13-14 1.2 Transmitter Safety .................
  • Page 10 Back to MANUALS Menu T A B L E O F C O N T E N T S ( c o n t i n u e d ) 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...
  • Page 11 Back to MANUALS Menu T A B L E O F C O N T E N T S ( c o n t i n u e d ) P A R T F O U R - S E R V I C E A N D M A I N T E N A N C E SECTION 1 GENERAL INFORMATION ................
  • Page 12 Back to MANUALS Menu T A B L E O F C O N T E N T S ( c o n t i n u e d ) 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...

  • Page 13: Part O N E - I N T R O D U C T I O N

    Back to MANUALS Menu PART ONE - INTRODUCTION SECTION 1 - GENERAL INFORMATION P A R T O N E - I N T R O D U C T I O N ECTION GENERAL INFORMATION 1.1 Capability Highlights Sensor Input The transmitter can be used with any GLI Model 3400- series contacting conductivity sensor.

  • Page 14: Transmitter Safety

    Back to MANUALS Menu PART ONE - INTRODUCTION SECTION 1 - GENERAL INFORMATION 1.2 Transmitter Safety 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. 1.3 Retained All user-entered configuration values are retained indefi- Configuration Values...

  • Page 15: Specifications

    Back to MANUALS Menu PART ONE - INTRODUCTION SECTION 2 - SPECIFICATIONS ECTION SPECIFICATIONS 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.

  • Page 16: Section 2 Specifications

    Back to MANUALS Menu 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 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).

  • Page 17: Part T W O - I N S T A L L A T I O N

    Back to MANUALS Menu PART TWO - INSTALLATION SECTION 1 - UNPACKING P A R T T W O - I N S T A L L A T I O N ECTION UNPACKING After unpacking, it is recommended to save the shipping carton and packing materials in case the instrument must be stored or re-shipped.

  • Page 18: Wall And Pipe Mounting

    Back to MANUALS Menu PART TWO - INSTALLATION SECTION 2 - MECHANICAL REQUIREMENTS 2.2 Wall and Pipe Figure 2-1 illustrates how to wall or pipe mount the trans- mitter using the supplied GLI hardware kit. Determine the Mounting mounting method, and attach the hardware as shown. 1.

  • Page 19: Panel Mounting

    Back to MANUALS Menu 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.

  • Page 20: Integral Sensor Mounting

    Back to MANUALS Menu PART TWO - INSTALLATION SECTION 2 - MECHANICAL REQUIREMENTS 2.4 Integral Sensor Figure 2-3 illustrates how to integrally mount the transmitter onto a sensor using the supplied GLI mounting hardware kit. Mounting 1. Using a blunt tool, open knockout hole in bottom of swivel ball for routing the sensor cable.

  • Page 21: Electrical Connections

    Back to MANUALS Menu PART TWO - INSTALLATION SECTION 3 - ELECTRICAL CONNECTIONS ECTION 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 mm Wiring Tip! To comply with European Community (CE) electromagnetic compatibility requirements, follow these general wiring guidelines:...

  • Page 22: Gli Contacting Conductivity Sensor

    Back to MANUALS Menu PART TWO - INSTALLATION SECTION 3 - ELECTRICAL CONNECTIONS 3.1 GLI Contacting Refer to Figure 2-5 and connect the sensor (or intercon- nect) cable wires to Terminal 1, Terminals 3 through 5, and Conductivity Sensor Terminal 7 on TB2, matching colors as indicated. (Termi- nals 2 and 6 are unused.) Wiring Tip! Route the sensor cable in 1/2-inch, grounded metal conduit to protect it from moisture,...

  • Page 23: Two-Wire Hookup

    Back to MANUALS Menu PART TWO - INSTALLATION SECTION 3 - ELECTRICAL CONNECTIONS 3.2 Two-wire Hookup In a two-wire hookup, at least 16 VDC is required for opera- tion. 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: •...

  • Page 24: Figure 2-7 Three-Wire Hookup -- Load Sinking

    Back to MANUALS Menu 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. •...

  • Page 25: Four-Wire Hookups (With Or Without Rs-485 Serial Communication)

    Back to MANUALS Menu PART TWO - INSTALLATION SECTION 3 - ELECTRICAL CONNECTIONS Jumper Required Loop Power Loop Resistance 14-30VDC (See nomograph) 1400 1200 1000 LOOP LOAD 50 Ohms/Volt DC VOLTAGE FIGURE 2-9 Three-wire Hookup -- Load Sourcing Loop Power Loop Resistance 16-30VDC (See nomograph)

  • Page 26: Figure 2-11 Four-Wire Hookup Without Rs-485 Serial Communication

    Back to MANUALS Menu 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.

  • Page 27: Monitor Mode Hookups

    Back to MANUALS Menu PART TWO - INSTALLATION SECTION 3 - ELECTRICAL CONNECTIONS 3.5 Monitor Mode In a monitor mode hookup (without current loop), the trans- mitter can be wired two ways depending on whether or not Hookups (without RS-485 serial communication is used. At least 12 VDC is current loop) required for operation (16 VDC with serial communication).

  • Page 28: Part T H R E E - O P E R A T I O N

    Back to MANUALS Menu PART THREE - OPERATION SECTION 1 - USER INTERFACE P A R T T H R E E - O P E R A T I O N ECTION USER INTERFACE The user interface consists of a two-line LCD display and a Õ...

  • Page 29: Figure 3-1 Transmitter Keypad

    Back to MANUALS Menu PART THREE - OPERATION SECTION 1 - USER INTERFACE 2. ENTER key: Pressing this key does two things; it dis- plays 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.

  • Page 30: Measure Screen (Normal Display Mode)

    Back to MANUALS Menu PART THREE - OPERATION SECTION 1 - USER INTERFACE 1.4 MEASURE Screen The MEASURE screen is normally displayed. Pressing the MENU key temporarily replaces the MEASURE screen with (normal display mode) the top-level “MAIN MENU CALIBRATE” branch selection screen.

  • Page 31: Menu Structure

    Back to MANUALS Menu PART THREE - OPERATION SECTION 2 - MENU STRUCTURE ECTION 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 top- level screens, related lower level submenu screens and, in many cases, sub-submenu screens.

  • Page 32: Displaying Top-Level Menu Screens

    Back to MANUALS Menu PART THREE - OPERATION SECTION 2 - MENU STRUCTURE 2.2 Displaying With the first top-level menu screen within the desired main Ø Ø × × keys to scroll through Top-level branch displayed, use the other top-level screens to access a desired screen. Menu Screens The top-level menu screens for each main branch are: Ð...

  • Page 33: Displaying Submenu Screens

    Back to MANUALS Menu PART THREE - OPERATION SECTION 2 - MENU STRUCTURE 2.3 Displaying After selecting a top-level menu screen, press the ENTER Submenu Screens key to display a related submenu or edit/selection screen: • Submenu Screens are usually linked to other related Ø...

  • Page 34: Transmitter Configuration

    Back to MANUALS Menu PART THREE - OPERATION SECTION 3 - TRANSMITTER CONFIGURATION ECTION TRANSMITTER CONFIGURATION NOTE: When the passcode feature is enabled (Section 3.5), you must successfully enter the passcode before attempting to enter a configuration setting. 3.1 Selecting LANGUAGE The transmitter is normally equipped to display screens in to Operate Transmitter English and Spanish (Español).

  • Page 35: Select Display Format

    Back to MANUALS Menu PART THREE - OPERATION SECTION 3 - TRANSMITTER CONFIGURATION Press ENTER key again to display Ø Ø × × keys to view the three choices: • CONDUCTIVITY: Selects conductivity measurement. • RESISTIVITY: Selects resistivity measurement. • TDS: Selects total dissolved solids measurement. WARNING: CHANGING THE MEASUREMENT AUTOMAT-...

  • Page 36: Set Filter Time

    Back to MANUALS Menu PART THREE - OPERATION SECTION 3 - TRANSMITTER CONFIGURATION 1. With the screen displayed, press Ø Ø key once to display 2. Press ENTER display screen like Ø Ø × × keys to view choices. . Use Depending on the selected measurement, they are: For CONDUCTIVITY For RESISTIVITY...

  • Page 37: Config Tds Measurement

    Back to MANUALS Menu PART THREE - OPERATION SECTION 3 - TRANSMITTER CONFIGURATION ENTER 2. Press display screen like Ø Ø × × keys to view choices: . Use • LINEAR (recommended for most aqueous solutions) • AMMONIA (not shown for TDS measurement; only use this built-in temperature properties table for specific applications -- consult factory) •...

  • Page 38: Uration Not Needed For Other Compensation Methods)

    Back to MANUALS Menu PART THREE - OPERATION SECTION 3 - TRANSMITTER CONFIGURATION 4. With the desired choice displayed, press ENTER key to enter this selection. If the “NaCl” conversion factor was selected, TDS measurement configuration is complete. If you selected “USER DEFINED,” you must enter a conductivity-to-TDS conversion factor: A.

  • Page 39: Enter Note (Top Line Of Measure Screen)

    Back to MANUALS Menu PART THREE - OPERATION SECTION 3 - TRANSMITTER CONFIGURATION 2. Press ENTER key to display Press ENTER key again to display a screen like . Use arrow keys to adjust the displayed value to the desired % per °C slope, and press ENTER key to enter the value.

  • Page 40: Select Cell K (Sensor's Gli-Certified "K" Value)

    Back to MANUALS Menu PART THREE - OPERATION SECTION 3 - TRANSMITTER CONFIGURATION A. Starting with extreme left character position, use × × Ø Ø keys to select the desired first character. Ö Ö B. Press key once to select the next character, and ×...

  • Page 41: Select Temp Element Type

    Back to MANUALS Menu PART THREE - OPERATION SECTION 3 - TRANSMITTER CONFIGURATION 6. After the screen re-appears, press ESC key once to return to the screen. Select Configure the transmitter for either automatic temperature TEMP ELEMENT compensation (uses Pt 1000 ohm RTD built into sensor), or Type fixed MANUAL temperature compensation.

  • Page 42: Set T Factor (Sensor's Gli-Certified "T" Factor)

    Back to MANUALS Menu PART THREE - OPERATION SECTION 3 - TRANSMITTER CONFIGURATION A. With the screen displayed, Ø Ø key once to display press B. Press ENTER key to display a screen like . Use arrow keys to adjust the displayed value to the desired fixed temperature, and press ENTER key to enter the value.

  • Page 43: Set °C Or °F (Temperature Display Format)

    Back to MANUALS Menu PART THREE - OPERATION SECTION 3 - TRANSMITTER CONFIGURATION • Shortened Sensor Cable: To increase the transmitter tem- perature reading to match the known solution temperature, decrease the T FACTOR by 3.85 ohms for each ° C difference. •...

  • Page 44: Configuring Analog Output

    Back to MANUALS Menu PART THREE - OPERATION SECTION 3 - TRANSMITTER CONFIGURATION 3.4 Configuring The transmitter provides an isolated 4-20 mA analog output. During normal measurement operation, the output is active Analog Output but can be held at the last measured value for up to 30 min- utes by using the “HOLD OUTPUT”...

  • Page 45: Set Filter Time

    Back to MANUALS Menu PART THREE - OPERATION SECTION 3 - TRANSMITTER CONFIGURATION . Use arrow keys to set the dis- played value at which 20 mA is desired, and press ENTER key to enter the value. NOTE: If the same values are set for 4 mA and 20 mA, the output automatically goes to, and remains at, 20 mA.

  • Page 46: Set Passcode (Feature Enabled Or Disabled)

    Back to MANUALS Menu PART THREE - OPERATION SECTION 3 - TRANSMITTER CONFIGURATION 3.5 SET PASSCODE The transmitter has a passcode feature to restrict access to configuration settings and calibration to only authorized (feature enabled personnel. or disabled) • DISABLED: With the passcode feature disabled, all con- figuration settings can be displayed and changed, and the transmitter can be calibrated.

  • Page 47: Configuration Setting Summary (Ranges/Choices And Defaults)

    Back to MANUALS Menu PART THREE - OPERATION SECTION 3 - TRANSMITTER CONFIGURATION 3.6 Configuration Setting Table B lists all configuration settings and their entry ranges/choices and factory defaults, categorized by basic Summary functions. Table B -- TRANSMITTER CONFIGURATION SETTINGS (RANGES/CHOICES and DEFAULTS) Displayed Screen Title Entry Range or Choices (where applicable) Factory Default...
  • Page 48 Back to MANUALS Menu 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 TEMPERATURE Display Configuration Setting CONFIGURE: °...

  • Page 49: Transmitter Calibration

    Back to MANUALS Menu PART THREE - OPERATION SECTION 4 - TRANSMITTER CALIBRATION ECTION 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 the first time (Section 4.2). Zeroing provides the best possible measuring accuracy.

  • Page 50: Zero Procedure (First-Time Sensor Calibration Only)

    Back to MANUALS Menu PART THREE - OPERATION SECTION 4 - TRANSMITTER CALIBRATION Zeroing/Calibration Tip! If a “CONFIRM FAILURE?” screen appears during zeroing or calibration, press ENTER × × Ø Ø key to confirm. Then, use key to select between “CAL: EXIT”...

  • Page 51: Dry-Cal Method (Highly Recommended)

    Back to MANUALS Menu PART THREE - OPERATION SECTION 4 - TRANSMITTER CALIBRATION 9. After the “ZERO: CONFIRM ACTIVE?” screen appears, press ENTER key to return the analog output to its ac- tive state (MEASURE screen appears). This completes zeroing the sensor. Each GLI enhanced performance conductivity sensor has 4.3 DRY-CAL Method two unique, GLI-certified values that must be entered to...

  • Page 52: Set T Factor (Sensor's Gli-Certified "T" Factor)

    Back to MANUALS Menu 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 Ø tion screen like . Use keys to select the nominal cell category that corre- sponds to the sensor’s GLI-certified “K”...

  • Page 53: Point Sample Method (Wet Calibration)

    Back to MANUALS Menu PART THREE - OPERATION SECTION 4 - TRANSMITTER CALIBRATION SPECIAL CASE -- ALTERED SENSOR CABLE LENGTH (only for sensors with Pt 1000 temperature element*) Changing the standard 20 ft. (6 m) sensor cable length, by shortening it or adding an interconnect cable, affects tempera- ture measuring accuracy.

  • Page 54: Table C Conductivity Reference Solutions

    Back to MANUALS Menu 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 deter- mine its value using laboratory analysis or a recently calibrated portable meter.
  • Page 55 Back to MANUALS Menu PART THREE - OPERATION SECTION 4 - TRANSMITTER CALIBRATION Remove any bubbles clinging to the outer and center electrodes by gently stirring the sensor in the solution. Sen- sors with a deeper recessed center electrode require more vigorous stirring. 2.

  • Page 56: Analog Output Calibration

    Back to MANUALS Menu PART THREE - OPERATION SECTION 4 - TRANSMITTER CALIBRATION TIVE?” output status screen. When the reading corre- sponds to the actual typical process value, press ENTER key again to return the analog output to its ac- tive state (MEASURE screen appears).

  • Page 57: Analog Output Calibration

    Back to MANUALS Menu 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 com- plete calibration of the minimum endpoint value.

  • Page 58: Test/Maintenance

    Back to MANUALS Menu PART THREE - OPERATION SECTION 5 - TEST/MAINTENANCE ECTION TEST/MAINTENANCE The transmitter has TEST/MAINT menu screens to: • Check system status for the transmitter and sensor. • Hold analog output at its last measured value. • Provide analog output test signal to confirm operation of connected device.

  • Page 59: Hold Output

    Back to MANUALS Menu 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 sen- sor cable wires or terminals are shorted. 5. Press the ENTER key again to view the “STATUS: TEMP OK”...

  • Page 60: Firmware (Eprom Version) Checking

    Back to MANUALS Menu PART THREE - OPERATION SECTION 5 - TEST/MAINTENANCE ENTER 2. Press display screen like 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.

  • Page 61: Sim Sensor Setting

    Back to MANUALS Menu PART THREE - OPERATION SECTION 5 - TEST/MAINTENANCE • SENSOR: Depending on the configured measurement, selects the simulated value to be a conductivity, resistivity or TDS value. • TEMPERATURE: Selects the simulated value to be a temperature value. 3.

  • Page 62: Reset Calibrate Values To Factory Defaults

    Back to MANUALS Menu PART THREE - OPERATION SECTION 5 - TEST/MAINTENANCE 1. With the screen displayed, press Ø Ø key until 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.

  • Page 63: Part F O U R - S E R V I C E A N D M A I N T E N A N C E

    Back to MANUALS Menu PART FOUR - SERVICE AND MAINTENANCE SECTION 1 - GENERAL INFORMATION P A R T F O U R - S E R V I C E A N D M A I N T E N A N C E ECTION GENERAL INFORMATION If a measurement problem exists and you suspect the sen-...

  • Page 64: Troubleshooting

    Back to MANUALS Menu PART FOUR - SERVICE AND MAINTENANCE SECTION 3 - TROUBLESHOOTING ECTION TROUBLESHOOTING 3.1 Ground Loops The transmitter may be affected by a “ground loop” problem (two or more electrically grounded points at different poten- tials). Symptoms Indicating a Possible Ground Loop •...

  • Page 65: Finding Source Of Ground Loop

    Back to MANUALS Menu PART FOUR - SERVICE AND MAINTENANCE SECTION 3 - TROUBLESHOOTING Finding Source Sometimes the source of a ground loop is easy to find, but it of Ground Loop usually takes an organized approach to isolate the problem. Troubleshooting Tip! Use a systematic troubleshooting method.

  • Page 66: Verifying Sensor Interconnect Cable Integrity

    Back to MANUALS Menu PART FOUR - SERVICE AND MAINTENANCE SECTION 3 - TROUBLESHOOTING Table D -- FULL-SCALE EQUIVALENT TEST RESISTANCE VALUES Configured “Nominal” Cell Constant Configured Display Format 0.05 (see Note 1) For Conductivity Measurement 25 K Ω 0-2.000 µS/cm not applicable not applicable not applicable...

  • Page 67: Transmitter Repair/Return

    TRANSMITTER REPAIR/RETURN 4.1 Customer Assistance If you need assistance in troubleshooting or repair service, please contact your local GLI representative, or the GLI Customer Service Department at: GLI International, Inc. Phone: [800] 543-8907 9020 West Dean Road Fax: [414] 355-8346 Milwaukee, WI 53224 E-mail: info@gliint.com...

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