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Metal Detector VMH3CS – Operation Manual
© 2007 Vallon GmbH, D-72800 Eningen/Germany
3.4 Setting the Detection Sensitivity
When switched ON the detector starts with its standard sensitivity setting. This
standard setting can be changed by pressing the buttons „+“ and „-“ in the
hand grip.
The level of the detection sensitivity is symbolically indicated by the length of
the LED-bargraph in the hand grip.
The selected sensitivity will be kept constant by the electronics under all
environmental conditions (temperature changes, etc.).
If you are operating with the highest detection sensitivity (threshold of the
audio signal) we recommend in case of strong temperature changes (i.e. from
cold storage to warm field conditions) to readjust the detection sensitivity as
follows:
Temperature Change
Readjust
after
up to 20°C 5 min.
40°C or more 10 min.
The selected sensitivity is kept constant during the operation until the detector
is switched OFF. After each switching ON you have to select the desired
detection sensitivity again.
NOTE
For safety reasons the detector always starts with its basic sensitivity setting,
that means with high detection sensitivity.
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