Introduction, Theory Of Object Detection - Trotec MD200 Operating Manual

MD200 soft carrying case incl . 4 x AA batteries and
operating manual
3.2 Display and operating functions
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2
3
4
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sensitivity
1
volume
2
battery status
3
calibration
4
+ key (Up) and Erase function
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numeric signal strength display
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display illumination
7
"50 Hz" indication
8
graphic signal strength display
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menu selection and confirmation key
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- key (Down) and On/Off function
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speaker
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EN
MD200 MD200
99
50 Hz
50 Hz
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3.3 Battery compartment
The battery compartment can easily be opened by use of a
coin or another pointed tool (screw driver, knife) .
The holder for 4x AA batteries can completely be removed
from the compartment . Hence, the batteries can be changed
unproblematically .

04 Introduction, theory of object detection

The MD200 locates ferromagnetic objects by detecting
their influence on the Earth's magnetic field . The sensor
rod comprises two "Fluxgate" sensors
measuring the Earth's magnetic field at a certain distance
and exact angle to one another . If the Earth's magnetic
field is undisturbed, the flux lines are running parallel
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7
and both sensors measure the same signal . If there is a
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9
ferromagnetic object
influences the Earth's magnetic field and deflects the
10
flux lines . This deflection is more apparent in the lower
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3
Fluxgate sensor than in the upper one, which leads to a
deviation of the electrical signal and can be measured .
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3
The bigger the object and the closer you are to it, the more
noticeable the deflection .
Operating manual – MD200
MD200
99
50 Hz
50 Hz
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continuously
1
buried in the ground, this object
2
1
3
2
A - 2