RKI Instruments 61-1001RK-05 - Manual (Page 14)

10 • 61-1001RK-05 Combustible Gas Detector
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 short piece of sample tubing to connect the
regulator to the calibration cup.
Preparing for Calibration
WARNING: Do not remove the junction box cover while the circuits are energized
unless the area is determined to be non-hazardous. Keep the junction box
cover tightly closed during operation.
1. Screw the calibration cup onto the bottom of the detector.
2. Screw the regulator into the calibration cylinder.
3. Use the calibration kit sample tubing to connect the regulator to the calibration cup.
4. Place the controller into its calibration program or disable external alarms.
NOTE: Calibrating the hydrogen detector may cause alarms. Be sure to put the controller
into its calibration program or disable external alarms before continuing.
Setting the Zero Reading
NOTE: If you can verify that the hydrogen detector is in a fresh air environment, you do
not need to apply zero air to the detector before adjusting the zero reading.
1. Follow the directions in the controller operator’s manual for setting the zero reading.
2. When the instructions call for applying zero air to the detector, turn the regulator’s
on/off knob counterclockwise to open it.
3. Allow the gas to flow for one minute.
4. Set the zero reading according to the controller operator’s manual.
5. Turn the regulator’s on/off knob clockwise to close it.
6. Leave the sample tubing connected to the regulator and the calibration cup.
Setting the Response Reading
1. Follow the directions in the controller operator’s manual for setting the response
reading (span).
2. When the directions call for exposing the detector to gas, turn the regulator’s on/off
knob counterclockwise to open it.
3. Allow the gas to flow for one minute before continuing with the directions.
4. After setting the response reading, turn the regulator’s on/off knob clockwise to close
it.
5. Unscrew the regulator from the cylinder.
Returning to Normal Operation
1. Unscrew the calibration cup from the detector.