Magnetic Field Measurement

GMW offers a broad range of Fluxgate, Hall Effect, NMR, and Fluxmeter based magnetic field measurement sensors and instruments together with in-depth technical support.

Magnetic Sensors
Special Sale Offers
Discontinued Products
Magnetic Units
Magnetic Field Vectors
Occupational Magnetic Fields

Specifications

Application

Product

Range

Resolution

Bandwidth

Fluxgate Instruments and Transducers

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High sensitivity and accuracy for low magnetic fields. Magnetic fields from appliances and equipment, site surveys and monitoring. Active magnetic field cancellation.

MAG-01
1-axis

± 2mT

0.1nT

DC - 10Hz

MAG-03
3-axis

± 1mT

0.1nT

DC - 3kHz

Three-Axis Magnetic Field Sensor

Ametes Three-Axis Magnetic Field Sensor. Three Sentron CSA-1V with sensitive axes mutually perpendicular. Three analog output signals for Bx, By, and Bz.

MFS-3A

± 7.3mT

±10μT

DC - 100kHz

Ametes Three-Axis Magnetic Field Demonstrator. Self contained instrument used to demonstrate and
monitor the output voltages from the Ametes MFS-3A 3-axis Magnetic Field Sensor.

DMFS-3A

± 7.3mT

±10μT

DC - 100kHz

Linear Hall Transducers

'Miniature type Sensor' linear magnetic field measurement, feedback control, field mapping, and quality control

YM12-3-5-0.2T
1-axis

± 0.2T

± 12µT

DC - 1kHz

YM12-3-5-2T
1-axis

± 2T

± 12µT

DC - 1kHz

YM12-3-5-5T
1-axis

±5T

± 12µT

DC - 1kHz

CH3A2ME3A1-0.2T
3-axis

± 0.2T

± 12µT

DC - 2.5kHz

CH3A2ME3A1-2T
3-axis

± 2T

± 12µT

DC - 2.5kHz

CH3A5ME3D25K12T
3-axis

± 2T

± 12µT

DC - 25kHz

Hand-held Hall Teslameters/Gaussmeters

THM1176 Hand-held, 3-axis magnetic field measurement for magnet and fringing fields. Availabe in Desktop or Handheld kit configurations.

THM 1176
3-axis

±100mT
±500mT
±3T
±20T

±300µT
±500µT
±3mT
±15mT

DC - 1kHz
DC - 1kHz
DC - 1kHz
DC - 1kHz

Precision Digital Hall Teslameters/Gaussmeter

Precision measurement and control of magnetic fields for laboratory and process control

DTM-133
1-axis

± 3T

± 5µT

DC - 10Hz

DTM-151
1-axis

± 3T

± 0.1µT

DC - 3Hz

Very High Precision NMR Teslameters/Gaussmeters

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Calibration of magnetic standards. Very high resolution and stability measurement of magnetic fields. Measures total magnetic field at a single point.

PT 2025
Total field

± 13.7T

± 0.1µT

FW 101
Total field

± 2.1T

± 0.5nT

Fast, very high resolution mapping of MRI imaging magnets with an array of probes.

MFC 3045
Total field

± 7.0T

± 0.01µT

Digital Voltage Integrators / Fluxmeters

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Precision flux change measurement.

PDI 5025
Flux change

40V.s

2E-8V .s

1ms - 2²³ms

PDI 5035
Flux change

40V.s

2E-8V .s

0.25ms - 2²³ms

Conversion of gauss to tesla:
1µG = 0.1nT, 1mG = 100nT, 1G = 100µT, 10G = 1mT, 10,000G = 1T

Relationship between Magnetic Flux Density (B) and Magnetic Field Strength (H):
In vacuum (or air) B=µ_oH. For SI units µ_o = 4pi x 10^-7H/m, B is expressed in Tesla and H in Ampere turn/m or A/m. Hence in vacuum or air a flux density of 1T = 796kA/m.
For cgs units µ_o = 1, B is expressed in gauss and H in oersted. Hence in vacuum or air a flux density of 1 gauss = 1 oersted.
For further information visit the NIST Reference on Constants, Units, and Uncertainty

Last updated on: 10 December, 2009

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GMW Associates, Inc.

Tel: + 650-802-8292 Fax: + 650-802-8298

955 Industrial Road, San Carlos, CA 94070, USA