- Commodity name: Stefan Mayer MR-3
Triaxial Compensation System for Low-Frequency Magnetic Fields

MR-3 is a feedback compensation system. It reduces magnetic fields by establishing a compensating magnetic field in the opposite direction. MR-3 continuously compensates for magnetic field interference in the frequency range of DC-1 kHz. A low-noise triaxial fluxgate magnetometer measures the magnetic field, and analog control electronics generate a compensation signal, which is input to a built-in power amplifier directly connected to the compensation coils. Typically, these coils consist of only a set of cable loops with a small amount of wire installed at the edge of the laboratory.

Customized modifications, compensation coils, and installation services can be provided upon request.

MR-3 OFF MR-3 ON

Scanning Electron Microscope Image Improvement

Technical Parameters:

● Magnetic Field Sensor: Triaxial Fluxgate Sensor

● Dimensions: Diameter 25mm × 70mm

● Zero Drift: < 0.1 nT/K

● Noise: < 0.7 nT RMS (0.1 Hz < f < 1000 Hz)

● Analog Output: 1 V/µT, BNC connectors for X, Y, Z

● Bandwidth: 0 to 1000 Hz (-3 dB)

● Digital Display: Displays incremental DC or true RMS AC magnetic fields for X, Y, and Z

● Analog Meter: Displays DC coil current, range ±3 A

● Attenuation @ 50 Hz: 40 dB at sensor location

● Attenuation @ 250 Hz: 20 dB at sensor location