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Instruction 24-94485-14
Calibration
4. Use the and buttons to enter an
Applied value that exactly equals the concen-
tration stamped on the CO cylinder.
The calibration range is from 250 to
11,000 ppm. An attempt to calibrate out-
side this range will cause the message “Bad
Calibration Wrong CAL Entry” to appear in
the following step.
5. Adjust regulator for a flowmeter indica-
tion of approximately 2 SCFH. Wait until
the Measured reading stabilizes (approximately 3 minutes), and then
press ENT to calibrate the CO Measured value to that of the Applied
value. The message “Good Calibration” should briefly appear followed
by the CALIBRATION LIST screen being re-displayed.
If the sensor’s output is low, but still usable, then the message “Good
Calibration WARNING Low Sensor” will appear. The sensor will now
be marked as being Low in the DIAGNOSTICS screen.
If the sensor’s output is too low to be usable, then the message “Bad
Calibration Sensor End of Life, Entry Not Saved” will appear followed
by the CALIBRATION LIST screen being re-displayed. The sensor will
now be marked as being BAD in the DIAGNOSTICS screen.
6. Turn OFF regulator and remove gas cylinder.
CALIBRATE CO-HI
Measured 3895 PPM
Applied 4000 PPM
06/28/06 09:45:30 AM
PRINT
F1 F2 F3
Figure 5-2. Gas Sensor Calibration Equipment
Parts:
1. Gas Cylinder
2. Regulator *
3. 3/16" I.D. Tubing *
4. Tee *
5. Flowmeter *
6. Barbed Hose Connector *
* Part of Calibration Kit 24-7059
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