Bacharach Portable Combustion Analyzer 24-9351 User Manual
Page 58
PCA
Instruction 24-9351
7. Turn off the flow of CO calibration-gas; then remove the calibration-
gas cylinder from the calibration fixture.
8. Attach a CO/H
2
calibration-gas cylinder to the calibration fixture;
then adjust the regulator of the calibration fixture for a flowmeter
reading of approximately 2 SCFH.
9. Use the
st
and
keys to enter a CO-VALUE that is the same as
the CO concentration which is stamped on the CO/H
2
calibration-gas
cylinder.
Typical Test Gas CO/H2 Screen During Calibration Procedure:
TEST GAS CO/H2
-------------------
CO-VALUE XXXX
ENTER CO-VALUE
10. Press the
key to save the CO-VALUE and display the Calibrate H2
Screen.
11. After calibration gas has been applied for approximately 3 minutes (to
allow for stabilization), use the
st
and
keys to enter an APPLIED
value* that equals the H
2
concentration stamped on the CO/H
2
calibration-gas cylinder.
Typical CALIBRATE H2 Screen During Calibration Procedure:
CALIBRATE H2
MEASURED 1050 PPM
APPLIED 1000 PPM
12. Press the
key to calibrate the analyzer’s MEASURED value to
that of the APPLIED value. At this time the Calibrate Menu Screen is
redisplayed.
* The calibration range for this screen is 500–1500 ppm, any attempt to
calibrate outside this range will cause the unit to display an error
message.
Calibration
5-10