3B Scientific Magnetic Field Sensor, Axial - Manual

3B SCIENTIFIC® PHYSICS
Elwe Didactic GmbH • Steinfelsstr. 6 • 08248 Klingenthal • Germany • www.elwedidactic.com
3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany • www.3bscientific.com
Subject to technical amendments
© Copyright 2007 3B Scientific GmbH
Axial/tangential field probe U8533997
Instruction sheet
12/07 SP
1 Tangential probe
2 Axial probe
3 Support stem
4 Connector cable with 5-pin diode-
protected plug
5 Slide switch
6 MU metal case (
not included)
1. Description
The axial/tangential field probe measures magnetic
fields produced by DC and AC currents as well as
magnetic flux (B) and field strength (H).
The field probe works by means of the Hall principle
and makes up a sensor unit in combination with the
microvoltmeter (U8530501-230 resp. U8530501-115).
The support stem for the Hall probes emerges from
the side of the plastic casing containing the elec-
tronic circuitry for both probes and also provides a
handle when making measurements. Connection to
the microvoltmeter is made via a 5-pin diode-
protected plug. The requisite voltage is supplied by
the microvoltmeter. The slide switch on the casing
selects whether the axial or the tangential probe is
activated.
A shielding case made from MU metal (U8530522)
serves to set the field probe to zero.
2. Technical data
Hall sensor InAs monocrystalline
1 mm
2 approx.
Measurement range: 1 mT to 2 T
Electr. conversion: 1 mV is 1 mT
Frequency range: 1 Hz to 10 kHz
Casing: 130 x 44 x 22 mm 3
Stem: 125 x 11 x 4 mm 3
3. Sample experiments
DC-Offset
V
Fig.1 Field measurement inside a coil using axial field
probe.
DC-Offset
Fig. 2 Magnetic field measurement inside the air gap of a
transformer using tangential field probe