RKI Instruments 35-3000RKA-10 User Manual
Page 16
16 • 35-3000RK-10 PPM Hexane Sample Draw Detector
11. Connect the humidifier tube from the gas collection bag to the dispensing valve, then
open the clamp.
12. Turn the dispensing valve’s on/off knob counterclockwise to open it. The gas
collection bag begins to fill.
13. Turn the dispensing valve’s on/off knob clockwise to close it when the gas collection
bag appears full.
14. Close the tubing clamp, then disconnect the humidifier tube from the dispensing
valve.
15. Remove the dispensing valve from the gas cylinder.
Performing the response test
1.
Connect the humidifier tube from the gas collection bag to the inlet sample line.
The sample draw detector’s pump begins pulling the test sample from the gas
collection bag when you connect the tubing to the inlet sample line.
2.
After one minute, verify that the test points output stabilizes within ± 20% of the mV
reading you determined earlier for the test sample. If the mV reading is not within ±
20% of the test sample, calibrate the sample draw detector as described in
“Calibration” on page 23.
3.
Remove the humidifier tube from the inlet sample line.
4.
Remove the voltmeter leads from the amplifier test points.
5.
Close the housing door.
6.
Unscrew the dispensing valve from the gas cylinder.
7.
Return the controller to normal operation.
8.
Store the components of the calibration kit in a save place
Biannually
Calibrate the sample draw detector as described in the “Calibration” on page 23.
Troubleshooting
The troubleshooting guide describes symptoms, probable causes, and recommended
action for problems you may encounter with the sample draw combustible gas detector.
NOTE:
This troubleshooting guide describes sample draw detector problems only. See
the controller operator’s manual if it exhibits any problems.
Fail condition
Symptoms
•
The sample draw detector’s Fail LED is on.
•
The controller 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,
clogged filter, failed pump, etc.
•
The sample draw detector is malfunctioning.
•
The detector or amplifier wiring is disconnected or misconnected.