RKI Instruments 35-3001-04 - Manual (Page 23)

35-3001-04 Carbon Monoxide Sample-Draw Detector • 19
Setting the Response Reading
1. Screw the demand flow regulator onto the carbon monoxide calibration cylinder.
2. Connect the sample tubing from the regulator to the inlet line.
3. Allow the sample-draw detector to draw the calibrating sample for 1 minute.
4. When the reading on the voltmeter stabilizes, verify that the reading matches the response
reading (±2 mV) you determined earlier.
5. If necessary, use the span potentiometer on the amplifier to adjust the reading to match the
correct response reading.
6. Disconnect the sample tubing from the sample-draw detector’s inlet fitting.
7. Reconnect the incoming sample line to the inlet fitting.
8. Unscrew the regulator from the calibration cylinder.
Returning to Normal Operation
1. Wait approximately one minute to allow the carbon monoxide reading to stabilize.
2. Remove the voltmeter leads from the amplifier test points.
3. Close the housing door.
4. Follow the instructions in the controller’s operator’s manual to exit the calibration mode.
5. Store the components of the calibration kit in a safe and convenient place.