Gaussmeter Model GM2

Manufactured in the USA by AlphaLab, Inc.


 Laboratory gaussmeter that reads field, true peak field, AC field, and has an alarm. Range is 30,000 gauss.

SKU: GM2 $675 Includes one probe of your choice and a NIST traceable calibration certificate.

Available Options:

Data Recording (USB): $130 Detachable Rubber Boot: $15 Hard Carrying Case: $30

Additional probes (interchangeable probes for GM2): $185 each

ST (range: 0.1-30k G): Universal (flexible), ST Axial, ST Thin-Transverse (non-flexible)

HS (range: 0.01-800 G): Universal (flexible), HS Axial

Product Description:

The Model GM2 Measures the strength and polarity of magnetic field up to 30kG when using a standard probes, or 800 gauss (resolution 0.01 gauss) if an HS probe is used. Functions include DC, AC and peak hold along with a user-adjustable alarm which has three modes of operation. DC background field can be subtracted out either by pressing “Relative Zero” or by manually adjusting the offset. The meter includes battery, AC adapter analog output jack and calibration certificate. If a standard probe is used, resolution is 0.1 gauss up to 19,999.9 gauss, which is stronger than the field of any permanent magnet. This 5 ½ digit display allows measurement of tiny difference in strong fields. Above 20kG the meter autoranges to a 30kG range. Interchangeable probes are available at two sensitivity levels: standard to 30k gauss and HS (resolution 0.01 gauss); these are available in universal (bendable), axial and transverse shape. Choice of one probe is included with the meter. (Full Length Description)

GM2 Output Jack Description:

The GM2 comes standard with a 1/8" (3.25 mm) mono phone plug, which resembles a headphone jack. Output is an analog voltage proportional to the magnetic signal at that moment. The ST output range is +2 to -2V, corresponding to +20,000 to -20,000 gauss. HS range is +0.8 to -0.8V, corresponding to +800 to -800 gauss. When switched to AC or Peak Hold, the output remains the actual field (not the AC or peak hold value). Bandwidth is DC -1500 Hz..



SPECIFICATIONS: 1-axis DC/AC Gaussmeter GM2
Range/Resolution (ST Probe): 0-19,999.9 G / 0.1 G; 20kG- 30kG /1G indicates polarity
Range/Resolution (HS Probe): 0-799.99G / 0.01G indicates polarity
Accuracy (w/ probe) 16° to 29°C: 1% of DC reading / 3% AC +/- 10 Counts / 1% peak hold
Accuracy (w/ probe) -4° to 65°C: 2% of DC reading / 4% AC +/- 10 Counts / 2% peak hold
AC Frequency Range: 45-800 Hz; 3 dB limits are 11 to 1500 Hz.
Peak Hold Speed: 2 millisec pulse is 71%, 5+ millisec pulse is 100%±1%
Output Type: Analog DC Signal.
Output Magnitude (ST Probe): Below 20kG, output is 0.1mV/G. Above 20kG, it is 0.01 mV/G
Output Magnitude (HS Probe): 1mV/G
Meter Size: 5.2 x 3.6 x 1.6 inches; 138 x 91 x 41 mm
Weight: 7.5 oz
Battery: 9 volt alkaline (~40 hour life with ST probe, ~ 20 with HS probe); "Low Battery" indicator

Recalibration service for GM2: $120

GM2 Instructions

SKU: GM2 $675 Includes one probe of your choice and a NIST traceable calibration certificate. is owned by AlphaLab, Inc. 3005 South 300 West Salt Lake City, Utah 84115 USA