O2 Reference Setup - Bacharach PCA2 Instruction, Operating & Maintenance

3.11 O Reference Setup
2
The measured values of CO, NOx, and SO
individually referenced to a specific O
of between 0 and 15%.
Individually set up the O reference value for each
2
of the above gases as follows:
1. Display the MAIN MENU by pressing the
button. If necessary, press
MENU (F2)
until MENU appears above
2. Use the buttons to highlight SETUP, and
then press to display the SETUP MENU.
ENT
3. Use the buttons to highlight O
and then press to display the O
ENT
REFERENCE screen.
4. Use the buttons to highlight the desired
measurement, and then press
the REF TO O screen for that measurement.
2
In the example shown, CO has been selected.
5. First use the buttons to move the cursor
across the screen until it is over the digit to
be changed, and then press the
until the desired value is displayed.
6. Press to save the displayed value and re-
ENT
display the O REFERENCE screen, or press
2
to abort this procedure and retain the
ESC
old O reference value.
2
7. If the O reference value for more than one gas
2
is being set, then repeat Steps 4, 5, and 6 for
each measurement.
Instruction 24-9448
MAIN MENU
can be
FUEL
2
PRESSURE
percentage
2
TEMPERATURE
MEMORY
SETUP
CALIBRATION
DIAGNOSTICS
STATUS
MENU
ESC
.
F1 F2
F2
SETUP MENU
TEMP UNITS
PRESSURE UNITS
POLLUTION UNITS
REF,
DATE
2
TIME
2
O REFERENCE
2
PRINT PRESSURE
(more)
MENU
to display
ENT
F1 F2
O REFERENCE
2
CO Ref to O
NOx Ref to O
SO Ref to O
2
buttons
05/26/06 09:25:30 AM
MENU
F1 F2
SET O REFERENCE
2
CO REF TO O
05/26/06 09:25:30 AM
MENU
F1 F2
Initial Setup
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.
5.8 NO Sensor Calibration
This procedure spans the optional nitric oxide sensor to a known gas level.
Material Required:
F3
Calibration Kit, P/N 24-7059
Gas Cylinder: 250 ppm NO in Nitrogen, P/N 24-1156
Procedure:
1. If not already done, turn ON the analyzer
and display the CALIBRATION LIST screen
per Section 5.2.
F3
2. Use the
then press
2
NO screen.
2
2 "Measured" is the current NO reading, while
"Applied" is a known NO level that will be
applied for calibration purposes.
3. Attach a 250 ppm NO cylinder to the regu-
lator of the calibration fixture shown in
Figure 5-2 on Page 5-14.
F3
4. Use the
Applied value that exactly equals the concen-
0
tration stamped on the NO cylinder.
2:
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 flowmeter indication of approximately 2 SCFH.
F3
3-11 Instruction 24-9448
buttons to highlight NO, and
to display the CALIBRATE
ENT
and buttons to enter an
Calibration
CALIBRATION MENU
Pressure
T-Stack
T-Air
CO-LO
SO
2
NO
NO
2
(more)
MENU
F1 F2 F3
CALIBRATE NO
Measured 245 PPM
Applied 250 PPM
Press ENT
to calibrate
06/28/06 11:45:30 PM
PRINT
F1 F2 F3
5-11