RKI Instruments 65-2481RK User Manual
Page 30
26 • 65-2481RK Multi Point Detector
connected to the regulator and the calibration cup.
Setting the Zero Reading
1.
Screw the regulator into the 100% nitrogen calibration gas cylinder. Make sure the
regulator is off. It is off when the on/off knob is turned all the way clockwise.
2.
Follow the directions in the controller operator’s manual for setting the zero reading.
3.
When the directions call for exposing the detector to gas, turn the regulator’s on/off
knob counterclockwise to open it. Gas will begin to flow.
4.
Allow gas to flow for 2 minutes before continuing with the directions.
5.
Turn the regulator’s on/off knob clockwise to close it.
6.
Set the zero reading according to the controller operator’s manual.
7.
Unscrew the regulator from the cylinder.
Returning to Normal Operation
1.
Unscrew the calibration cup from the oxygen detector.
NOTE:
For convenience, leave regulator and calibration cup connected by the sample
tubing.
2.
When the controller display reading rises above the alarm points, return the
controller to normal operation.
NOTE
: If you do not allow the gas reading to rise above the alarm points, then unwanted
alarms may occur.
3.
Verify that the controller display reading increases and stabilizes at 20.9% oxygen.
4.
Store the components of the calibration kit in a safe and convenient place.