RKI Instruments 35-3001A-02 User Manual
Page 18
14 • 35-3001A-02 Oxygen Sample-Draw Detector
Performing the response test
1.
Exhale into the sample-draw detector’s inlet fitting.
2.
Stop exhaling into the sample line, then verify that the reading on the voltmeter decreased from
the normal reading, 434 mV.
NOTE: If the reading does not decrease, calibrate the detector as described in “Calibration” on
page 18.
3.
Remove the voltmeter leads from the amplifier test points.
4.
Reconnect the sample tubing to the inlet fitting.
Quarterly Calibration
Calibrate the sample-draw detector as described in “Calibration” on page 18.
Troubleshooting
The troubleshooting guide describes symptoms, probable causes, and recommended action for
problems you may encounter with the sample-draw detector.
NOTE: This troubleshooting guide describes sample-draw detector problems only. See the
controller Operator’s Manual if the controller exhibits any problems.
Fail Condition
Symptoms
•
The sample-draw detector’s Fail LED 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 wiring is disconnected or misconnected.
Recommended action
1.
At the sample-draw detector, set the correct flow rate with the sensor flow control valve.
2.
If you cannot set the correct flow rate, check the sample lines for obstructions or kinks.
3.
Verify that the sensor wiring is correct and secure. “Wiring the Sample-Draw Detector to a
Controller” on page 10 describes sensor wiring connections.
4.
Calibrate the sample-draw detector as described in “Calibration” on page 18.
5.
If the fail condition continues, replace the sensor(s) as described in “Replacing Components of
the Sample-Draw Detector” on page 15.
6.
If the fail condition continues, contact RKI Instruments, Inc. for further instruction.
Slow or No Response/Difficult or Unable to Calibrate
Symptoms
•
The sensor responds slowly or does not respond during the monthly response test.
•
Unable to accurately set the zero or response reading during the calibration procedure.