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7.
PRACTISING ON THE FIELD
7.1.
Using the acquisition sensor on different types of soil
The measurement quality of the Gas Tracker is directly linked to the acoustic coupling quality of
the acquisition sensor on the ground.
There are two main types of situation:
Hard ground
Soft ground
The sensor is simply placed on the
ground. Ensure that the 3 legs are
always in contact with the solid part of
the covering, avoiding gravel as much
as possible.
Do not hesitate to "crush" the sensor
with the foot to force the adhesion to
the ground and to get rid of the
pebbles that could hinder the contact
of the legs.
Do not walk around the sensor during
measurement to avoid noise.
In the presence of soft soil (grassy
ground, trench recently plugged but
not compacted), push as much as
possible the sensor in the soil.
Optimal coupling is achieved when the
sensor touches the ground.
Do not walk around the sensor during
measurement to avoid noise.
