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USER MENU
CF TEST
Only available as an option for instruments with CO and O2 and the extended
memory feature.
To Conduct a CF Test
NOTE:
The hot air flue probe must be used with the instrument when
conducting this test to prevent damage to the instrument and to receive
proper calculations.
IMPORTANT:
Air free CO levels or CF readings are calculated by
the instrument based on CO and O2 levels detected during flue gas
sampling of gas fired appliances.
From the working display, press & release MENU BUTTON (B) once,
SELECT TEST will appear on the top line of the display. Press & release
the SAVE/ZERO BUTTON (C) until CF is displayed.
Press & release the MENU BUTTON (B) again and the instrument will
auto-zero and then enter the CF test menu. Press & release the MENU
BUTTON (B) once more to start the test.
NOTE:
Using the SAVE/ZERO BUTTON (C) may advance you to
another test option depending on the instrument version.
A 180 second timed test will begin. (The time for this test is factory
adjustable.) A countdown timer will show the remaining seconds of the
test. The peak CF reading will start to flash “0PK”. It will continue to flash
until 20 seconds after the oxygen level drops below 18.9%. At this point,
conditions are acceptable for a valid test calculation.