65-2301RKSS Toxic Detector • 15
NOTE
: If you can verify that the toxic detector is in a fresh air environment, you do not need to apply
zero air to the detector before adjusting the fresh air reading.
5.
Put the controller into its calibration program. See the controller operator’s manual for
instructions to enter the calibration program.
Setting the Zero (Fresh Air) Reading
1.
Follow the instructions in the controller operator’s manual for setting the zero 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.
Set the fresh air reading according to the controller operator’s manual.
5.
Turn the regulator’s on/off knob clockwise to close it.
6.
Unscrew the regulator from the zero air calibration cylinder. Leave the sample tubing connected to
the regulator and the calibration cup.
NOTE:
Depending on the size of your zero air cylinder, it is possible that you will have a different
regulator for the zero air cylinder and toxic gas cylinder. If necessary to fit the calibration
toxic gas cylinder, change the regulator.
Setting the Response Reading (Span)
1.
Screw the regulator into the calibration gas cylinder.
2.
Follow the directions in the controller operator’s manual for setting the response (span) 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 the gas to flow to the detector for 2 minutes.
5.
Set the response reading according to the controller operator’s manual.
6.
After setting the response reading, turn the regulator’s on/off knob clockwise to turn it off.
7.
Unscrew the regulator from the cylinder and gently pull the calibration cup off of the plug-in
sensor.
NOTE:
For convenience, leave the regulator and calibration cup connected by the sample tubing.
8.
Allow about 45 seconds for the gas reading to decrease below the alarm points and then return the
controller to normal operation.
NOTE
: If you do not allow the gas reading to decrease below the alarm points, then unwanted
alarms may occur.
9.
Verify that the controller display reading decreases and stabilizes at 0 ppm.
10. Store the components of the calibration kit in a safe and convenient place.
