C-SCOPE M-SCAN, User Manual

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10
Visual Indication
When no ferromagnetic
material is close, the M-Scan
display will show a very low
field strength reading in µH
and the analogue bar graph
will be at 0 or very low.
When nearing ferromagnetic
material the field strength
will increase up to a maximum
reading of 99.9uH.
The analogue bar graph
will also indicate full scale.
North / South Polarity
An arrow pointing towards the N indicates north polarity
field has been detected from the object (lower image left).
An arrow pointing towards the S indicates south polarity
field has been detected (top image left).
Many larger objects will show both polarities at opposite
ends of the object as it is traversed.
(See Applications Notes in this manual.)
Depth
The depth of buried objects can be estimated by comparing
signal strengths. A low signal strength indicates a very small
amount of ferromagnetic material or a deep buried object.
If the signal is very broad this also indicates a deeply buried
object. If the sensitivity is reduced or the M-Scan is lifted up
0.5m (1.5 ft) and the object traversed again and the signal
disappears then it is likely the object is relatively shallow
or small.
Pinpointing
For larger targets it is best to lower the sensitivity
to aid pinpointing.
M-SCAN
M-SCAN
Basic Operation and Description