RKI Instruments 65-2484RK-06 User Manual
Page 26
22 • 65-2484RK-06 Multi Point Detector
calibration cup.
4.
Put the controller into its calibration program. See the controller operator’s manual
for instructions to enter the calibration program.
NOTE:
RKI controllers have a peak hold feature for fresh air adjustment and a minimum
hold feature for zero adjustment. Because of this, the instructions call for turning
off the gas to a detector before making adjustments.
Setting the Fresh Air Reading
1.
Follow the directions in the controller operator’s manual for setting the fresh air
reading.
2.
When the instructions call for applying zero air to the detector, turn the regulator’s
on/off knob counterclockwise to open it. Gas will begin to flow.
3.
Allow the gas to flow for two minutes.
4.
Turn the regulator’s on/off knob clockwise to close it.
5.
Set the fresh air reading according to the controller operator’s manual.
6.
Unscrew the regulator from the zero air calibration cylinder. Leave the sample tubing
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.