Flue Readings - Extech Instruments CO80 Manual

4.5

Flue Readings

After competing steps 4.1 to 4.3.4, the instrument should now be ready to
take combustion readings.
Ensure that the combined filter/water trap hangs in a vertical position
whilst readings are being taken, and particularly if water is visibly present.
Failure to comply with this may result in damage to the instrument
4.5
Flue Readings (Cont.)
The time the gas sample takes to pass over the gas sensors from the flue
is approximately 10 seconds, and a further period of time should be
allowed for the readings to stabilise (approximately an additional 5
seconds).
If the CO concentration exceeds a level of 2,000 ppm, a continuous series
of 'alarm beeps' will be heard. The probe should be immediately
withdrawn from the flue, and the probe detached from the instrument. The
instrument should be run in outside ambient air until CO and CO
return to zero.
WARNING
WARNING
18
readings
2
CO80 V3.1 04/06