RKI Instruments 65-2405RK-04 User Manual
Page 22
18 • 65-2405RK-04 Combustible Gas Transmitter
6.
Unscrew the regulator from the zero air calibration cylinder.
7.
Leave the calibration cup/splash guard’s flexible tubing connected to the regulator.
Setting the Response Reading
1.
Screw the regulator into the calibration cylinder. Verify that the calibration gas is
representative of the transmitter’s target gas.
2.
Turn the regulator’s on/off knob counterclockwise to open the regulator.
3.
Allow the calibration gas to flow for the length of time determined in “Determining
Response Time” on page 16 and verify that the reading matches the response reading
(±2 mV) you determined earlier. If necessary, use the span pot on the amplifier to
adjust the reading to match the correct response reading.
4.
Turn the regulator’s on/off knob clockwise to close the regulator.
5.
Unscrew the regulator from the calibration cylinder.
Returning to Normal Operation
1.
Remove the voltmeter leads from the amplifier test points.
2.
Disconnect the calibration cup/splash guard’s flexible tubing from the regulator.
NOTE:
Do not disconnect the flexible tubing from the calibration cup/splash guard.
3.
Secure the amplifier junction box cover to the junction box.
4.
When the controller display reading falls below the alarm setpoints, return the
controller to normal operation.
5.
Verify that the controller display reading decreases and stabilizes at 0 %LEL.
6.
Store the components of the calibration kit in a safe and convenient place.