Specifications

Instruction 24-9395

Fyrite Pro

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. 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 segments

are turned ON.

3. Release the ENTER button. Observe the unit’s model number and

software 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

, CO, Pressure

CO Manual Zero: CO, Pressure, Ambient, TA, Stack, O