Grad-03 Three-Axis Magnetic Field Gradiometer
This instrument contains two closely spaced three-axis fluxgate elements (300/500/750mm baseline options) on a stable support beam, with versions for land (L) or marine (M) use. The unit operates from a power supply of ±12V and provides analogue outputs representing the field in each of the six sensing elements and the internal temperature. A bipolar signal input is provided which injects a test signal into each individual channel.
The Grad-03 has a dynamic range of ±100μT, a bandwidth of 2kHz and a resolution of better than 1nT. It will operate in high gradients where there are larger magnetic anomalies. The three-axis gradiometer configuration provides detailed spatial information, with the three independent gradiometers allowing easy identification of the anomaly.
The Grad-03M marine version is designed for ROV mounting, is housed within a carbon fibre pressure enclosure and operates to a depth of 5000m.
Typical applications: • Geophysical surveys • Unexploded ordnance (UXO) detection • Pipe and cable location.
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