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5.0 CAlIBRATION & MAINTeNANCe
Important: Fresh batteries should be installed, and the unit
allowed to stabilize at room temperature for at least two
hours before proceeding with calibration. To maintain ac-
curacy as listed in the Technical Characteristics Section 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. Wth the analyzer turned OFF, place the unt n fresh, ambent ar;
then press and hold down the eNTeR button.
2. Press the I/O button and release t. Observe that all LCD segments
are turned ON.
3. Release the eNTeR button. Observe the unt's model number and
software verson are dsplayed. The word "CAL" s then dsplayed
whle the unt warms up counts down from 60 seconds.
At the end of 60 seconds, the frst calbraton screen s dsplayed.
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: Ambent, TA, Stack, O
CO Manual Zero: CO, Pressure, Ambent, TA, Stack, O
Instruction 24-9395
Fyrite Pro
, CO, Pressure
2
2
41
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