12 • 65-2424RK H
2
S Transmitter
Maintenance
This section describes maintenance procedures. It includes preventive maintenance,
troubleshooting, and component replacement procedures.
Preventive Maintenance
This section describes a preventive maintenance schedule to ensure the optimum performance
of the H
2
S transmitter. It includes daily and quarterly procedures.
Daily
Verify a display reading of 0 PPM H
2
S at the controller. Investigate significant changes in the
display reading.
Quarterly
Calibrate the H
2
S transmitter as described in the Calibration section of this manual.
Troubleshooting
The troubleshooting guide describes symptoms, probable causes, and recommended action for
problems you may encounter with the H
2
S transmitter.
NOTE:
This troubleshooting guide describes transmitter problems only. See the controller
operator’s manual for problems you may encounter with the controller.
Fail Condition
Symptoms
•
The controller indicates a fail condition.
Probable causes
•
The transmitter wiring is disconnected or misconnected.
•
The transmitter’s zero reading is low enough to cause a fail condition.
•
The transmitter is malfunctioning.
Recommended action
•
Verify that the transmitter wiring is correct and secure.
•
Calibrate the transmitter.
•
If the fail condition continues, replace the H
2
S sensor.
•
If the fail condition continues, contact RKI for further instruction.
Slow or No Response/Difficult or Unable to Calibrate
Symptoms
•
The transmitter responds slowly or does not respond during the monthly response test.
•
Unable to accurately set the zero or response reading during the calibration procedure.
