RKI Instruments 61-1001RK - Manual (Page 11)

61-1001RK Combustible Gas Detector• 7
NOTE: Performing a response test on the hydrogen detector may cause alarms. Be sure
to put the controller into its calibration program or disable external alarms before
performing this test.
NOTE: The following procedure assumes the use of a calibration kit which includes a
calibration gas cylinder, a 0.5 LPM fixed flow regulator with an on/off knob, a
calibration cup for the detector, and a length of sample tubing.
Preparing for the response test
1. Place the controller into its calibration program or disable external alarms.
2. Verify that the controller display reading is 0% LEL.
If the controller reading is not 0% LEL, set the zero reading then continue this
procedure. See the controller operator’s manual for directions to set the zero reading.
3. Screw the regulator into the calibration cylinder.
4. Screw the calibration cup onto the bottom of the detector.
5. Use the calibration kit sample tubing to connect the regulator to the calibration cup.
Performing the response test
1. Turn the regulator’s on/off knob counterclockwise to open the regulator. Gas will
begin to flow.
2. Allow the gas to flow for one minute.
3. Verify that the reading is within ± 20% of the gas concentration.
NOTE: If the readings are not within ± 20% of the gas concentration, calibrate the
detector as described in the Calibration section of this manual.
4. Turn the regulator knob clockwise to close the regulator.
5. Unscrew the regulator from the calibration cylinder.
6. Unscrew the calibration cup from the detector.
7. When the display reading falls below the alarm setpoints, return the controller to
normal operation.
8. Store the components of the calibration kit in a safe place.
Quarterly
Calibrate the detector as described in the Calibration section of this manual.