Instruction 0024-9395
45
Fyrite Pro
9. Press
ENTER
to store the new calibration values and move to the
next cal i bra tion screen, or hold down
ENTER
for 2 seconds to store
the new calibration values and enter the Run Mode, or press the
I/O
button to exit the Cal i bra tion Mode and turn OFF the an a lyz er
with out saving the changes.
5.6 CO Sensor Zero & Calibration
(Model 100/105/120/125)
Material Required:
• Cylinder of 100 ppm (P/N 0051-1994) or
500 ppm (P/N 0024-0492) CO calibration gas
• Calibration Kit, P/N 0024-7059
To improve the accuracy of the CO reading, we suggest that if the analyzer
will be primarily used for flue gas testing, then calibrate using 500 ppm
CO. If the analyzer, however, will be pri ma ri ly used for ambient testing,
then calibrate using 100 ppm CO.
Procedure:
1. With the analyzer sampling fresh air, enter the Calibration Mode as
described in Section 5.1. Then repeatedly press the
ENTER
button
until “CO” appears in the upper-left side of the display.
2. Allow the pump to run and sample fresh air for at least 1 minute.
3. Use the
▲
and
▼
buttons to set the displayed value to 0 ppm.
4. Do one of the following:
a. End this procedure and save the new zero value by holding down
the
ENTER
button for 2 seconds; after which, the analyzer enters
its Run Mode.
b. Continue with Step 5 to span the CO sensor on a known concen-
tration of carbon monoxide.
5. Set up the Calibration Kit with 100 or 500 ppm CO as de scribed in
the in struc tions supplied with the kit.
