Zero Magnetic Field Shielding System

Features of the DXGE-30T Zero Magnetic Field Shielding System

• The zero-magnetic shielding magnetic field generation system solves the problem that the Helm three-dimensional geomagnetic compensation coil cannot shield the real-time fluctuations of the geomagnetic field when the geomagnetic field is shielded;
• The magnetic field shielding effect reaches a higher level (less than 1nT). When equipped with a high-precision fluxgate meter, a high-precision linear power supply and a three-dimensional equal diameter Helmholtz coil, the magnetic field can reach a range of 0-100000nT ;
• The magnetic field generation of the three components X, Y and Z can be accurate to 1nT, and the adjustment step can also be accurate to 1nT;
• It is widely used in product production and experiments in scientific research, military industry, medical and many other fields.

System composition

1. Shielding tube

• Provide a zero-magnetic environment and reduce magnetic field disturbance.
• The 4-layer shielding layer can achieve a shielding effect of residual magnetism ≤10nT, and the magnetic field fluctuation can reach ≤1nT;
• The 5-layer shielding layer can achieve a shielding effect of residual magnetism ≤1nT, and the magnetic field fluctuation can reach ≤10pT;
• The 6-layer shielding layer can achieve a shielding effect of residual magnetism ≤1nT, and the magnetic field fluctuation can reach ≤1pT.

2. Circular three-dimensional equal diameter coil

• Magnetic field strength range: -1000000nT~1000000nT;
• The size of the uniform magnetic field area: 100*100*100mm3;
• Magnetic field uniformity: better than 1%;
• The coil windings are made of oxygen-free copper enameled wire; the coil frame is made of precision mold-customized GFRP material; the connectors are made of imported black FR4 epoxy boards.

3. PC control software

• The control of the geomagnetic shielding coil group is used to eliminate the influence of geomagnetism;
• The control of the magnetic field generating coil group is used to generate a magnetic field of a specified size in a uniform area;
• The external input option box allows you to select whether the magnetic field setting is controlled by external signals;
• The size of the magnetic field generated by the coil can be fixed to prevent the test sample from interfering with the magnetic field generated by the coil;
• The magnetic field change process inside the coil can be recorded and saved in real time and exported to a table.

4. Programmable Current Source (Power supply)

The precision current source is a wide spectrum, high-precision DC steady-current power supply, which has the advantages of fast response, high precision constant current, long-term stable operation, and is suitable for various types of loads (resistive, inductive, capacitive).

5. Fluxgate Magnetometer

Dexinmag series fluxgate magnetometers are instruments for accurately measuring weak static and low frequency vector magnetic fields. The magnetic flux gate meter has the characteristics of high stability, high linearity and accuracy, and full digitalization. capacitive).