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5. Description
5.1
Purpose of a Magnetic Field Meter
The Teslameter FM 302, the AS-active-probes, the AS-probe adapter and
the AS-Adapter 3 form a handy measuring system which allows to measure
magnetic fields in a wide scope of application. This includes alternating
fields of electromagnets as well as constant magnetic fields of permanent
magnets.
For normal use of the instrument, please refer to section 6 Operation.
5.2
General Description of Operation
The measuring system consists of the Teslameter FM 302 and/or AS-probe
adapter and/or AS-Adapter 3 at least one pluggable AS-active-probe which
contains the sensor.
By the use of pluggable probes, the system may be fast and easily adopted
to different measuring tasks. Depending on the probe, fields from a few
nano-Tesla up to 12 Tesla can be measured. After plugging in the desired
probe one can start to measure immediately without adjustment of zero and
scale since the AS-active-probes have an active electronic which matches
the properties of the sensor to the measuring range of the probe.
There are different probes available which fulfill the requirements
to the geometry of the cavity to be measured,
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to the strength of the magnetic flux,
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to the treatment,
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to the size of the active sensor area,
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or to the operating temperature.
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The selection of probes is regularly extended. This is done especially by
requests of customers.
5.2.1
Teslameter FM 302
The Teslameter FM 302 has a 4 ½ digit display and three measuring
ranges. The sensitivity of the ranges depends on the used probe and differ
in factor 10 and factor 100. The polarity is displayed by the sign. The
displayed unit can be switched between Tesla, Gauss, Oersted and A/m.
The Teslameter FM 302 can used to measure steady as well as alternating
magnetic fields up to 100 kHz (depending on the probe type). For AC-fields
alternatively the mean value (DC) or the effective value (true RMS) can be
displayed (see section 6.3.2 Usage of The Teslameter FM 302).
Projekt Elektronik
MESS - UND REGELUNGSTECHNIK GMBH
Page 13
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