Specifications

PCA
®
3
81
The calibration range is from 9 to 900 ppm. An attempt to
calibrate outside this range will cause the message “Bad
Calibration Wrong CAL Entry” to appear in the following
step.
5. Adjust regulator for a fl owmeter
indication of approximately 2 SCFH.
Wait until the Measured reading
stabilizes (approximately 3 minutes),
and then press ENT to calibrate the
NO Measured value to that of the
Applied value. The message “Good
Calibration” should briefl y 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.