RKI Instruments GD-K8A User Manual
Page 13
Model GD-K8A Diffusion Detector Head • 9
Performing the response test
1.
Screw the calibration cylinder onto the fixed flow regulator.
2.
Turn the regulator’s on/off knob counterclockwise to open it. Gas will begin to flow.
3.
Allow gas to flow for two minutes and verify the reading is within ± 20% of the
response reading you determined earlier.
NOTE:
If the reading is not within ± 20% of the correct response reading, calibrate the
GD-K8A as described in the Calibration section of this manual.
4.
Turn the regulator’s on/off knob clockwise to close it.
5.
Unscrew the calibration cylinder from the regulator.
6.
Remove the calibration adapter from the sensor face, then disconnect the calibration
kit sample tubing from the regulator.
7.
Remove the milliampmeter test clips from the output check pins.
8.
Close the housing door.
9.
Allow time for the gas reading to return to normal and return the controller to normal
operation.
NOTE:
If the gas reading does not return to normal before returning the controller to
normal operation, unwanted alarms may occur.
Quarterly/Biannually
Calibrate the GD-K8A as described in the Calibration section of this manual. The
calibration frequency (every 3 to 6 months) depends on your specific application.
Troubleshooting
The troubleshooting guide describes symptoms, probable causes, and recommended
action for problems you may encounter with the GD-K8A.
Fail Condition
Symptoms
•
The controller is indicating a fail condition.
Probable causes
•
The GD-K8A wiring to the controller is disconnected or misconnected.
•
The GD-K8A is malfunctioning.
Recommended action
1.
Verify that the GD-K8A wiring is correct and secure. The Installation section of this
manual describes GD-K8A wiring connections.
2.
Calibrate the GD-K8A as described in the Calibration section of this manual.
3.
If the fail condition continues, replace the sensor as described later in this section.
4.
If the fail condition continues, contact RKI Instruments, Inc. for further instruction.