SA-FGM


	FGM Single Axis Fluxgate Magnetometers

		FGM single axis fluxgate magnetometers are rugged, accurate, highly sensitive portable hand held instruments for measuring DC magnetic fields from 1 gamma (1 nTesla) to 2 Gauss. These small and highly stable portable instruments, powered by a conventional 9 volt alkaline battery, can measure DC magnetic fields to an absolute accuracy of ±0.5% traceable to NIST, with linearity better than ±0.02% on all ranges. All FGM instruments have three ranges: ±20 mGauss, ±200 mGauss, and ±2000 mGauss. The 3½ digit LCD display (or optional 4½ digit display) provides a resolution of 0.05% (1 gamma on the 20 mGauss range). There are no zero or gain adjustments required. The fluxgate magnetometer design inherently results in very stable and accurate performance. A buffered analog output is provided which can be used to drive a strip chart recorder or connect to a data acquisition system. The wide frequency response of DC to 100 Hz (optional DC to 400 Hz) of the analog output allows the user to monitor fast moving magnetic signals and measure 50/60 Hz powerline fields.




	Single Axis Model FGM-3D2



	Model FGM-3D2TN with case and AC adapter

Typical applications include measuring ambient vectors, inspecting air shipment packages for compliance with FAA regulations, classroom demonstrations, calibrating laboratory field sources such as solenoids or Helmholtz coils, measuring weak fields in rocks, mapping and recording field perturbations caused by ferromagnetic objects, measuring Earth's field vector components, determining attenuation characteristics of magnetic shields and shielding materials, and evaluating effectiveness of magnetically shielded rooms.

The superior stability, linearity, and accuracy of the FGM compared to Hall effect devices make it the only choice for precision high quality low-level magnetic field measurement and the best choice for general purpose magnetometer applications.

The FGM comes with either a longitudinal (L) or transverse (T) sensor. A neutralization (N) feature is available to null out ambient vectors from 0 to ±600 mGauss when conducting measurements outside of a shielded enclosure.


Features

		Portable, battery powered magnetometer 1 gamma (0.01 mGauss) resolution on 20 mGauss range ± 0.5% absolute accuracy traceable to NIST (Previously NBS) Three full-scale ranges: ±20, ±200, and ±2000 mGauss 3½ or 4½ digit display Analog output ±2 V Noise <0.5 gamma Wide bandwidth 100 Hz or 400 Hz Neutralization feature ±600 mGauss CE Certified

	Applications

		Package inspection Classroom demonstrations Residual field measurements (shielding effectiveness) Solenoid/Helmholtz coil calibration Field Mapping Vehicle magnetic signature measurements Measure Earth's field vector components Magnetic environment monitoring Measure weak fields in rocks

	FGM Single Axis Specifications

Model No.	FGM 3D2L	FGM 3D2T	FGM 4D2L	FGM 4D2T	FGM 3D2LN	FGM 3D2TN	FGM 4D2LN	FGM 4D2TN
Ranges	±20 mGauss - 2 µT, ±200 mGauss - 20 µT, ±2000 mGauss - 200 µT
Bandwidth	DC to 100 Hz	DC to 100 Hz	DC to 400 Hz	DC to 400 Hz	DC to 100 Hz	DC to 100 Hz	DC to 400 Hz	DC to 400 Hz
Digital Display	3½ Digits	3½ Digits	4½ Digits	4½ Digits	3½ Digits	3½ Digits	4½ Digits	4½ Digits
Resolution	1 nT/0.01 mG on 20 mG Range
Accuracy	±0.5% of FS, ±1 Count
Neut. Option	No	No	No	No	±600 mG	±600 mG	±600 mG	±600 mG

The following features and specifications apply to all single axis models: Power Source: 9 V battery
Low Battery Indicator: Yes
Analog Output: ±2 V
Temperature Range: 0° C to 50° C
Power Consumption: 150 mW
Optional AC Adaptor: Yes
Probe Dimensions: 2.75" L x 1.13" W x 0.62" H
Probe Cable Length: 5' (1.52 meters)
Weight: 15 oz.
Carrying Case: Included
Case Dimensions: 7.5" L x 4.0" W x 1.80" H
CE Mark: Yes
Certified & NIST Traceable: Yes
Warranty: One Year

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