RKI Instruments 35-3000RKA-10 User Manual
Page 17
35-3000RK-10 PPM Hexane Sample Draw Detector • 17
Recommended action
1.
Set the correct flow rate with the bypass valve or flow adjust pot.
2.
If you cannot set the correct flow rate, check the sample lines for obstructions or kinks.
3.
Inspect the hydrophobic filter to see if it is dirty or clogged with particulate matter or
liquid.
4.
Verify that the detector and amplifier wiring are correct and secure. “Installation” on
page 10 describes sample draw detector wiring connections.
5.
Calibrate the sample draw detector as described in “Calibration” on page 23.
6.
If the fail condition continues, replace the detector as described later in this section.
7.
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 twice a year.
Some applications may require a more frequent calibration schedule. See
“Calibration Frequency” on page 23 for a discussion of the calibration
requirements.
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.
Recommended action
1.
Verify that the calibration cylinder contains an adequate supply of a fresh test sample.
2.
If a demand flow regulator calibration kit is used, use a different demand flow
regulator to determine if the original one if functioning properly.
3.
If necessary, set the correct flow rate with the bypass valve or flow adjust pot.
4.
If you cannot set the correct flow rate, check the sample line for obstructions or kinks.
5.
If the calibration/response difficulties continue, replace the sensor as described later
in this section.
6.
If the calibration/response difficulties continue, contact RKI Instruments, Inc., for
further instruction.
Replacing Components of the Sample Draw Detector
This section includes procedures to replace the detector, amplifier, hydrophobic filter, and
ferrules.
Replacing the Detector
1.
Turn off the controller