Product Code: IC-GM2
The model GM2 is designed to measure strong and moderate magnetic fields, such as from magnets and solenoids. It is a laboratory gaussmeter that reads AC/DC magnetic fields, true peak field, has an alarm and optional USB datalogging. Maximum range is 30,000 gauss.Click for full description
The Model GM2 is designed to measure strong and moderate magnetic fields, such as from magnets and solenoids. It is fast and intuitive to use, with an extremely high dynamic range, measuring from 0.0 to 19,999.9 gauss in 0.1 gauss steps. Above 20000 gauss the range automatically changes, reading 20.000 to 29.999 kilogauss (20000 to 29999 gauss) in 1 gauss steps. Therefore a change as small as 0.1 gauss could be measured, for example, in a 14,000 gauss field (typical of the strongest possible field from a permanent magnet). With an optional high-stability probe, it has 0.01 gauss resolution. (High-stability probe range is +/- 799.99 gauss). The GM2 also measures AC field up to 10,000 gauss. A fast peak hold function (2 millisecond window) captures and displays any transients, whether positive or negative. In addition, either of two fast (2 millisecond) alarm functions can be selected when required. The alarm can sound either when the field exceeds a value that you set, or if the field is ever between two values you set.
Two sets of probes
There are two series of probes: ST (standard; 0.1 gauss resolution below 20 kilogauss, but with 30 kilogauss maximum range), and HS (high-stability; 0.01 gauss resolution with 799.99 gauss range). Each series is available in three shapes: universal, axial, and transverse. The universal can be bent (thousands of times if needed) between an axial shape (which measures the field component parallel to the cable direction) and a transverse shape (which measures the component parallel to the thin dimension of the probe). The standard universal probe (whose tip is shown in the illustration) is included with the meter, but another series/shape can be substituted at no extra cost. Each probe is at the end of a 100cm flexible cable. Other shapes and cable lengths can be easily made.
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.
- High Dynamic Range
Peak Hold Mode displays the maximum field encountered since the last time “Reset” was pressed. The Peak Hold response time is also 2 milliseconds,
so after scanning a surface, the meter can detect and display any very brief peak (spike) that was encountered as well as a slow one.
The peak displayed includes the polarity sign, and the value will be held in memory until you reset it or turn off the meter.
There is also a “Relative Zero” function. Several interchangeable probe types are available, and the meter automatically detects the probe type.
- Can be rapidly scanned across a part to check magnetization. An alarm sounds only where the field magnitude exceeds the level that you
set or where the field is between two levels you set. The alarm response time is 2 milliseconds, so it can be scanned quickly. The
alarm can be used either to check for any residual magnetism or to sound if a magnet is out-of-spec (by setting the upper level just
below the minimum acceptable field).
- Range/Resolution (ST Probe): +/- 19,999.9 G / 0.1 G; 20kG to 30kG /1G indicates polarity
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