How to use a Pitot tube (optional)
The GEM5000 gas analyser enables the site engineer to take gas measurements using a pitot tube. The Pitot
tube is used for gas extraction systems and the pressure readings are taken in mbar. Gas flow is calculated in
the analyser in m
3
/hr (metres cubed per hour).
Example of a Pitot tube
Fitting a pitot tube to the analyser:
1) It is important to seat the Pitot tube into the monitoring point with the tip facing into the gas flow. The
Pitot tube should also be housed half way down the monitoring pipe. (Please refer to the anemometer
instructions, which detail how to calculate the pipe diameter correctly).
2) Make sure that the sample tubing attached to the Pitot tube fits correctly.
3) Attach the sample tube from the top connection of the Pitot tube to the ‘blue port’ (the differential port)
on the analyser making sure that the gas port connector secure into place.
4) Attach the sample tube from the side of the Pitot tube to the ‘white port’ (inlet port/static pressure port)
on the analyser making sure that the gas port connector secures into place.
5) House the pitot gland correctly onto the monitoring point.
6) Make sure the water trap filter is fitted as close as possible to the Pitot tube. Make sure that the water
trap filter is clean and dry.
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