Specifications

Instruction 24-9388

Fyrite Pro

5.0 CALIBRATION & MAINTENANCE

Important: Fresh batteries should be installed, or use the

optional AC adapter to power the analyzer during calibra-

tion. The unit should be allowed to stabilize at room temper-

ature for at least 2 hours before proceeding with calibration.

To maintain accuracy as listed in the Technical Character-

istics 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 and 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, TL, TA, O

, CO, Pressure

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