How To Use An Anemometer (Optional) - LANDTEC GEM5000 Operating Manual

OMGEM5KN4.7.1

8.8 How to use an anemometer (optional)

The GEM5000 gas analyzer has the facility to attach an anemometer device enabling the
site engineer to measure the flow of gas within an extraction system. The anemometer
can be set to display two values; m/s (meters per second) and m
hour).
It is best practice to take the gas reading first before taking the flow reading with the
anemometer attached.
If using a 'borehole ID' the internal pipe diameter can be predetermined in the optional
LSGAM software. Once set, the site engineer cannot edit the pipe diameter setting.
If the site engineer is not using a borehole ID or the pipe diameter is not set in LSGAM the
operator will be prompted to enter a pipe diameter with a new ID on the analyzer. Select
soft-key 'Next ID' from the Main Gas Read screen, followed by soft-key 'Add' and add a
new borehole location.
In order to use the anemometer it is important to know the internal diameter (ID) of the
pipe if you want to calculate the flow in m
internal diameter not the outer diameter (OD) i.e. pipe outer diameter minus twice the
pipe wall thickness.
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GEM5000 Gas Analyzer
3
/hr (metres cubed per hour). This must be the
3
/hr (metres cubed per