TPS WP-81 - Temperature Troubleshooting

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pH and ORP/mV Troubleshooting, continued...
Inaccurate
readings, even
when calibration is
successful.
Reference junction blocked.
Clean reference junction, as
per instructions supplied with
the sensor.
Displays 7.00 for
all solutions.
Electrical short in connector.
1. Check connector.
Replace if necessary.
2. Replace sensor.
Displays 4-5 pH
for all solutions.
Glass bulb or internal stem
cracked.
Replace sensor.
Display flashes
“ATC” and “LIMIT”
The Temperature is not
within the ATC limits.
Cool/Heat solution before
taking measurements.
20.4 Temperature Troubleshooting
Symptom
Possible Causes
Remedy
Displays “OVR
o
C”
when sensor is
plugged in.
1. Faulty sensor.
2. Faulty instrument.
Fit new sensor, part number
122201.
Return to factory for repair.
Temperature
inaccurate and
cannot be
calibrated.
1. Faulty connector.
2. Faulty sensor.
3. Faulty instrument.
Check the connector and
replace if necessary.
Fit new sensor, part number
122201.
Return to factory for repair.