Instruction 0024-9395
41
Fyrite Pro
5.0 CALIBRATION & MAINTENANCE
Important:
Fresh batteries should be installed, and the unit
allowed to sta bi lize at room temperature for at least two
hours before proceeding with calibration. To main tain ac-
cu ra cy as listed in the Technical Characteristics Sec tion of
this manual, the standards used must be at least four times
as accurate as the stated accuracy of the Fyrite Pro.
5.1 Entering the Calibration Mode and
Testing the Display Segments
1. With the analyzer turned OFF, place the unit in fresh, ambient air;
then press and hold down the
ENTER
button.
2. Press the
I/O
button and release it. Observe that all LCD seg ments
are turned ON.
3. Release the
ENTER
button. Observe the unit’s model number and
soft ware version are displayed. The word “CAL” is then displayed
while the unit warms up counts down from 60 seconds.
At the end of 60 seconds, the first calibration screen is displayed.
Note:
The order in which the calibration screens are displayed
depends on whether the CO channel is set up for automatic or
manual zero (Section 3.5.3).
Calibration Screen Display Order
CO Auto Zero:
Ambient, TA, Stack, O
2
, CO, Pressure
CO Manual Zero:
CO, Pressure, Ambient, TA, Stack, O
2
