Bacharach PCA 2 24-9448 - Manual (Page 78)

Instruction 24-9448 5-12
Calibration
brefly appear followed by the CALIBRATION LIST screen beng
re-dsplayed.
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 cylnder.
5.9 NO
2
Sensor Calibration
Ths procedure spans the optonal ntrogen doxde sensor to a known
gas level.
Material Required:
Calbraton Kt, P/N 24-7059
Gas Cylnder: 100 ppm NO
2
n Ntrogen, P/N 24-1157
Procedure:
1. If not already done, turn ON the analyzer
and dsplay the CALIBRATION LIST screen
per Secton 5.2.
2. Use the buttons to hghlght NO
2
, and
then press ENT to dsplay the CALIBRATE
NO
2
screen.
“Measured” is the current NO
2
reading, while
“Applied” is a known NO
2
level that will be
applied for calibration purposes.
3. Attach a 100 ppm NO
2
cylnder to the
regulator of the calbraton fxture shown n
Fgure 5-2 on Page 5-14.
4. Use the and buttons to enter an
Appled value that exactly equals the concen-
traton stamped on the NO
2
cylnder.
The calibration range is from 9 to 150 ppm.
An attempt to calibrate outside this range will
•
•
CALIBRATION LIST
(more)
T-Air
CO-LO
SO
2
NO
NO
2
CO-HI
T-Ref
MENU
F1 F2 F3
CALIBRATE NO
2
Measured 96 PPM
Applied 100 PPM
06/28/06 11:45:30 AM
PRINT
F1 F2 F3