RKI Instruments 35-3010RKA-06 - Manual (Page 24)

20 • 35-3010RKA-06 Sample-Draw Detector
7. Disconnect the sample tubing from the inlet line.
8. Unscrew the regulator from the zero air calibration cylinder. Leave the sample tubing
connected to the regulator.
Setting the Response Reading
1. Screw the regulator into the 4-gas calibration cylinder.
2. Connect the sample tubing from the regulator to the inlet line at or near the sample-
draw detector’s INLET fitting.
3. Allow the calibration gas to flow for one minute.
4. Check the mV output on the LEL transmitter test points and verify that the reading
matches the response reading (±2 mV) you determined earlier.
5. If necessary, use the span pot on the LEL transmitter to adjust the reading to match the
correct response reading.
6. Repeat steps 3 and 4 for the H
2
S channel using the appropriate test points described in
the Preparing For Calibration section above and the appropriate span pot.
7. Disconnect the sample tubing from the sample-draw detector’s inlet line.
8. Unscrew the regulator from the calibration cylinder.
NOTE: For convenience, leave the regulator connected to the sample tubing.
Returning to Normal Operation
1. Remove the voltmeter leads from the test points.
2. Reconnect the incoming sample line.
3. Wait 1 to 2 minutes to allow the calibration gas to be drawn out and the readings to
stabilize.
4. Close the housing door.
5. Store the components of the calibration kit in a safe and convenient place.