Precision laboratory Gaussmeter for determining the magnetic field strength of permanent magnets and systems
Measurement of magnetizing pulses up to 50 kHz
User-friendly measuring instrument
Mains supply
Application in laboratories and in production lines
Field and temperature measurement via the probe input
Automatic temperature compensation

Operating principle

Single-channel Gaussmeter with a resolution of 5 3/4 digits and a measuring accuracy of ± 0,05 % of the measured value. A measuring rate of 30 measurements per second. Measurement of Hall voltage created in Hall sensor which is proportional to the adjacent magnetic field.

All the functions are displayed and controlled via the front panel of the instrument. Input via keyboard, readings on a 2-line fluorescent display with alphanumerical text. Analogue outputs, a RS-232 and an IEEE interface provides high accuracy and the possibility to analyse the development of the field.

The corrected analogue output shows the exact value displayed, the non-corrected analogue output shows the field strength in real time. The Gaussmeter 455 is used in sensor technology, in automation, for controlling production processes and in the manufacture of DC motors.

The comprehensive Hall probe programme includes over 500 measuring probes. As well as conventional transverse and axial probes BROCKHAUS also supplies probes for low temperature applications and for measuring minimal magnetic fields.

Technical data:	Gaussmeter 475 DSP
Measuring range:	35 mG, 350 mG, 3.5 G, 35 G, 350 G, 3.5 kG, 35 kG, 35 kG
Measuring frequency:	DC, 1 Hz - 50 kHz
Measuring accuracy:	± 0,05 % of DC value, ± 1% of AC value ± 0,005 % of DC measuring range, ± 1% of AC measuring range
Measuring rate:	5 measurements/sec / display 30 measurements/sec / interface (data buffer sampling rates up to 1000 measurements/sec)
Selection of measuring range:	automatic or manual
Resolution:	5 3/4 digits (1 of ± 300.000)
Display:	2-line, vacuum-fluorescence
Display units:	Gauss, Tesla, Oersted, A/m
Probe type:	all single-axis laboratory probes
Temperature range:	0°C - 75°C
Analogue outputs:	real-time analogue voltage, DAC field value, DAC compensated DC field value
Interfaces:	Auxiliary, RS-232, IEEE-488
Power supply:	100 - 130 V AC / 210 - 250 V DC, 50 / 60 Hz
Functions:	MIn-Max Hold (also for pulse fields) / AC Peak / Filter / Alarm / Zero Probe / Relative Reading / Auto Range / Memory Hold / AC/DC / temperature measuring / Keylock
Accessories:	Zero chamber, power cable, operating manual
Special accessories:	probe cable in lengths 3 / 7.6 / 15.24 / 30,.49 m 305 mm zero chamber / interface cable 19" drawer

Standard accessories

Zero chamber,
power cable,
operating manual

Recommended options

probe cable in lengths 3 / 7,6 / 15,24 / 30,49 m
305 mm zero chamber / interface cable
19" drawer

Hall probes overview Gaussmeter

Axial Probes

Model	L	D	A	Stem Material	Corrected accuracy (%) of reading	Temperature coefficient (maximum) zero	Temperature coefficient (maximum) calibration
MMA-2502-VH	2 " ± 0.063"	0.25" ± 0.006''	0.010"	Aluminum	± 0.25 % to 30 kG	± 0.09 G/°C	- 0.04 %/°C
MNA-1904-VH	4' ± 0.125"	0.187" ± 0.005''	0.005''	Fiberglass epoxy	± 0.25 % to 30 kG	± 0.09 G/°C	- 0.04 %/°C
MMA-2502-VG	2" ± 0.063''	0.25" ± 0.006''	0.010"	Aluminum	± 0.15 % to 30 kG	± 0.13 G/°C	- 0.005 %/°C
MNA-1904-VG	4' ± 0.125"	0.187" ± 0.005''	0.005"	Fiberglass epoxy	± 0.15 % to 30 kG	± 0.13 G/°C	- 0.005 %/°C

Transverse Probes

Model	L	D	A	Stem Material	Frequency Range	Corrected accuracy (%) of reading	Temperature coefficient (maximum) zero	Temperature coefficient (maximum) calibration
MMT-6J04-VH	4"± 0.125"	0.061" max	0.180"	Aluminum	DC	± 0.25 % to 30 kG	± 0.09 G/°C	- 0.04 %/°C
MNT-4E04-VH		0.045" max	0.150''	Rigid glass epoxy	DC and 10 Hz to 400 Hz	± 0.25 % to 30 kG	± 0.09 G/°C	- 0.04 %/°C
MMT-6J04-VG		0.061" max	0.180"	Aluminum	DC	± 0.15 % to 30 kG	± 0.13 G/°C	- 0.005 %/°C
MNT-4E04-VG		0.045" max	0.180"	Rigid glass epoxy	DC and 10 Hz to 400 Hz	± 0.15 % to 30 kG	± 0.13 G/°C	- 0.005 %/°C

Flexible Transverse Probes

Model	W	T	Active Area	Stem Material	Frequency Range	Corrected accuracy (%) of reading	Temperature coefficient (maximum) zero	Temperature coefficient (maximum) calibration
MFT-3E03-VH	0.135" max	0.025" max	0.040" dia (approx)	Flexible Tubing	DC and 10 Hz to 400 Hz	± 0.25 % to 30 kG	± 0.09 G/°C	- 0.04 %/°C
MFT-3E03-VG	0.135" max	0.025" max	0.040" dia (approx)	Flexible Tubing	DC and 10 Hz to 400 Hz	± 0.15 % to 30 kG	± 0.13 G/°C	- 0.005 %/°C

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