RKI Instruments 61-0191RK - Manual (Page 16)

12 • 61-1004RK/61-0191RK Carbon Dioxide Detector
4. Set the response reading according to the controller’s operator’s manual.
5. Unscrew the CO
2
cylinder from the regulator.
Returning to Normal Operation
1. Remove the sample tubing from the regulator.
2. Remove the calibration cup from the detector. Leave the sample tubing connected to
the calibration cup for convenience.
3. Allow the reading at the controller to decrease below the alarm points before
returning the controller to normal operation or enabling external alarms.
NOTE: If you do not allow the gas reading to decrease below the alarm points, then
unwanted alarms may occur.
4. Verify that the controller display reading decreases and stabilizes at a typical
background CO
2
level. The 0-5,000 ppm and 0-5 %volume detectors will display a
reading in a fresh air environment because they have low ranges. The 0-50 %volume
and 0-100 %volume detectors will not display a reading in fresh air because their
ranges are too large.
5. Store the components of the calibration kit in a safe and convenient place.