Table of Contents
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MODEL 1054B C
SYMPTOM
Fct below 0.5 or above 2.0.
Actual range determined by user.
Analyzer value not the same
as grab sample of process.
Fault code tcH/tcL/r i n .
Fault code Orn.
Fault code SEn.
Fault code EEP.
Fault code CHS.
No alarm relay closure.
No output current.
Low output current.
Zero conductivity reading.
Fault code E i n .
Very high conductivity reading.
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TABLE 8-3. Troubleshooting Guide
PROBLEM
1. Old or coated sensor.
1. Grab sample incorrect.
2. Unclear what is correct.
3. Analyzer out of calibration.
1. Miswire.
2. Open or shorted RTD.
1. Process conductivity
too high for sensor in use.
2. Process upset.
1. Open wire between sensor
and analyzer.
2. Cable length has been exceeded. 2. Locate analyzer within 250 ft.
Maximum cable length 250 ft.
1. Defective EEPROM.
1. Defective CPU.
1. Defective power card.
2. Defective CPU.
1. Defective power board.
2. Miswired.
1. Circuit loading with excessive
resistance on output.
1. Sensor miswired.
2. Solids coating sensor.
3. Open wire in sensor.
1. Sensor miswired.
2. Shorted sensor.
SECTION 8.0
DIAGNOSTICS AND TROUBLESHOOTING
ACTION
1. Clean or replace sensor.
1. Re-evaluate sample technique
and equipment.
2. Bench test analyzer.
3. Recalibrate per Start-up and
Calibration Section.
1. Check wiring between the
sensor and analyzer.
2. Replace sensor.
1. Replace sensor with a sensor
which has a higher cell constant
(see Table 1-1).
2. Check for process control
problem.
1. Repair wire/check connection.
of sensor.
1. Replace CPU PCB.
1. Replace CPU PCB.
1. Replace power PCB.
2. Replace CPU PCB.
1. Replace power PCB.
2. Check for short.
1. Consult output loading limits
Model 1054B C specifications
(600 ohms max load).
1. Repair wire/connection.
2. Clean sensor.
3. Replace sensor or tube.
1. Repair wire connection.
2. Replace sensor or tube.
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Table of Contents
Troubleshooting
