RKI Instruments 35-3010RK-03 - Manual (Page 19)

35-3010RK-03 Sample-Draw Detector • 15
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. Verify that the sensor and transmitter wiring is correct and secure. “Wiring the
Sample Draw Detector to a Controller” on page 9 describes detector wiring
connections.
2. Set the correct flow rate with the bypass valve or flow adjust potentiometer.
3. If you cannot set the correct flow rate, check the sample lines for obstructions or kinks.
4. If the fail condition continues, contact RKI Instruments, Inc. for further instruction.
Controller Fail Condition
Symptom
The controller is operating properly but indicates a failure alarm or a reading well below
zero on one or more channels.
Probable Causes
• The sample draw detector is in fail condition
• The sensor or transmitter wiring to the controller is disconnected or misconnected.
Recommended Action
1. Check the sample draw detector and if it is in fail, find the cause and correct it (see
above).
2. Verify that the sensor and transmitter wiring are correct and secure. “Wiring the
Sample Draw Detector to a Controller” on page 9 describes detector wiring
connections.
3. Calibrate the problem channel or channels as described in the Calibration section of
this manual.
4. If the fail condition continues, contact RKI Instruments, Inc. for further instruction.
Slow or No Response/Difficult or Unable to Calibrate
Symptoms
• One or more of the sensors respond slowly or does not respond during the monthly
response test.
• Unable to accurately set the zero or response reading on one or more of the channels
during the calibration procedure.
• One or more of the sensors requires frequent calibration.
NOTE: Under “normal” circumstances, the sample draw 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.