Geotech GEM5000 User Manual

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Page 57 of 127
Operating Manual
OMGEM5KN – Iss. 5.1
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Copyright – Geotechnical Instruments (UK) Ltd
GEM5000
The anemometer must fit centrally (the conical fitting must be set on the probe to half the pipe ID before
insertion). The arrow on the tip of the probe must point in the direction of the gas flow.
Note: Use the thumb screw to help align the direction of the probe into the gas stream.
Flow readings are most accurate when there is laminar flow (not turbulent). Turbulence can be caused by a
change in pipe direction or restriction. Ideally, upstream you want at least 20 times the pipe ID along the length
of the pipe without restriction or bend. Downstream, you want at least five times the pipe ID along the length of
the pipe i.e. for a 100mm ID you need 2000mm of clear pipe upstream, 500mm downstream.
Example to show anemometer fitting into the sample point:
Instructions for use:
1) Attach the anemometer to ‘Connector C’ (refer to section 5.3 – Instrument connection points).
2) Place the anemometer into the pipe (sample point) ready to take the reading.
3) To take a flow measurement when using an anemometer, follow the instructions displayed on the
analyser. When the reading has stabilised press the ‘Enter’ key to store the reading.
Note: The use of an anemometer overrides internal flow.
Anemometer cleaning instructions:
General handling tips:
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Protect the probes against severe vibration.
Conical Fitting
Pipe Centre Line
Pipe
Head
Flow Direction
Thumb Screw
Anemometer
Conical Fitting
Pipe Centre Line
Pipe
Head
Direction of the arrow must be in the same direction as the flow
Flow Direction
Thumb Screw
Anemometer
Conical Fitting
Pipe Centre Line
Pipe
Head
Flow Direction
Thumb Screw
Anemometer
Conical Fitting
Pipe Centre Line
Pipe
Head
Direction of the arrow must be in the same direction as the flow
Flow Direction
Thumb Screw
Anemometer

Geotech GEM5000 Specifications

General

Brand	Geotech
Model	GEM5000
Category	Measuring Instruments
Language	English