RKI Instruments 35-3000RKA-H2S User Manual
Page 11
Sample-Draw Hydrogen Sulfide Gas Detection • 11
Troubleshooting
The troubleshooting guide describes symptoms, probable causes, and recommended
action for problems you may encounter with the sample-draw hydrogen sulfide gas
detector.
NOTE:
This troubleshooting guide describes sample-draw detector problems only. See
the instruction manual for the monitoring device if it exhibits any problems.
Fail condition
Symptoms
•
The sample-draw detector’s Fail light is on.
•
The monitoring device is operating properly but indicates a reading well below zero.
Probable causes
•
The sample-draw detector’s flow rate is too low because of an obstructed sample line,
failed pump, etc.
•
The sample-draw detector is malfunctioning.
•
The sensor or transmitter wiring is disconnected or misconnected.
Recommended action
1.
At the sample-draw detector, set the correct flow rate with the bypass valve or flow
adjust potentiometer.
2.
If you cannot set the correct flow rate, check the sample lines for obstructions or kinks.
3.
Verify that the detector and transmitter wiring are correct and secure. The Installation
section on page 6 describes detector wiring connections.
4.
Calibrate the sample-draw detector as described in the Calibration section on page 14.
5.
If the fail condition continues, replace the sensor as described later in this section.
6.
If the fail condition continues, contact RKI Instruments, Inc., for further instruction.
Slow or no response/difficult or unable to calibrate
Symptoms
•
The detector responds slowly or does not respond during the monthly response test.
•
Unable to accurately set the zero or response reading during the calibration
procedure.
•
The detector requires frequent calibration.
NOTE:
Under “normal” circumstances, the detector requires calibration once a quarter.
Some applications may require a more frequent calibration schedule.
Probable causes
•
The calibration cylinder is low, out-dated, or defective.
•
The sample-draw detector’s flow rate is too low because of an obstructed sample line,
failed pump, etc.
•
The sample-draw detector is malfunctioning.