Innovation in Magnetic Field Measuring Instruments

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mineGrad-03 magnetic field gradiometerROV

Three-axis magnetic field gradiometer | Grad-03
This instrument contains two closely spaced three-axis fluxgate elements (300/500/750/1000mm 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 and a bandwidth of 2kHz. 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.

Compatible with Grad-03ACU analogue correction unit

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