RKI Instruments 65-2497RK - Manual (Page 11)

65-2494RK/65-2497RK Oxygen Detector • 7
WARNING: The controller is not an active gas monitoring device during the response
test procedure.
NOTE: Performing a response test on the oxygen detector may cause alarms. Be sure to
put the controller into its calibration program or disable external alarms before
performing this test.
1. Place the controller into its calibration program or disable external alarms.
2. Verify that the controller display reading is 20.9% oxygen.
If the display reading is not 20.9% oxygen, set the fresh air reading, then continue this
procedure. See the controller operator’s manual for instructions to set the fresh air
reading.
3. Exhale into the bottom of the oxygen detector housing.
4. Stop exhaling into the bottom of the detector, then verify that the reading on the
controller display decreased from the normal reading of 20.9% oxygen.
NOTE: If the reading does not decrease, calibrate the detector as described in
“Calibration” on page 11.
5. When the display reading rises above the decreasing alarm setpoint, return the
controller to normal operation.
Quarterly
Calibrate the detector as described in “Calibration” on page 11. See the calibration
frequency discussion in “Calibration Frequency” on page 10 to determine if a quarterly
calibration schedule fits your needs.