Electro-Chemical Devices (ECD) T80 - Manual (Page 48)

6.0 TROUBLESHOOTING
Symptom Probable cause Remedy
Blank Display No Power
Sensor Failure, causing power draw
down below transmitter threshold
Check power source, 24VDC loop,
24VDC, 110/220VAC
Unplug sensor from transmitter,
replace sensor if instrument
powers up.
Incorrect Readings Sensor needs calibration
Incorrect Temperature
measurement
Temperature Compensation set up
incorrectly
Perform a standardization
calibration. See INFO for calibration
log
Calibrate/Trim Temperature to
correct value
Verify: 0.33% for pH, pIon
0.00% for ORP
4.0% for DO
“Looking For Sensor” prompt Lost connection between sensor
and transmitter
Check sensor connection to
transmitter, loose connector?
Visually inspect cable for cuts or
crushed areas, replace sensor if
cable is compromised
Page 47 Model T80