The Model 520 Fluxgate Magnetometer is a versatile instrument that enables measurement of
magnetic fields over the very wide range of 3x10-7G (one millionth of the Earth's
magnetic field!) up to 1200 mG. The field is measured simultaneously along three orthogonal
directions and is displayed on three front panel 3 1/2 digit liquid crystal displays. The
full scale reading can be changed in four steps from 1000 mG to 1 mG. On the 1 mG scale,
the least significant digit corresponds to a field change of 10-6 G. The three axes
outputs can also be simultaneously monitored by oscilloscope or strip chart at provided BNC
connectors.
The 520 Fluxgate System can be employed to measure time varying as well as static
fields. The system frequency response is flat from DC to 250 Hz, enabling measurement of
power line generated fields, biologically generated fields and other small, time varying fields.
In addition to the features of the 520 System, the 520A Model adds precision 3
axis offset capability. This capability enables the nulling out of steady fields on all axes
up to 10-4 T (1000 mG) with no degradation in the instrument drift or noise level.
This feature is essential when measuring small field changes in the presence of a large static
field. Examples of this application are testing materials for small magnetic impurities and
measuring small changes in the Geomagnetic field.
The 520 and 520A Fluxgate Systems consist of a magnetic field measuring probe connected
by a 15 foot interconnect cable to a power supply and electronic readout console. The small
probe size enables magnetic measurements to be made in restricted spaces.
The Model 520 Fluxgate Magnetometer is a versatile instrument that enables measurement of
magnetic fields over the very wide range of 3x10-7G (one millionth of the Earth's
magnetic field!) up to 1200 mG. The field is measured simultaneously along three orthogonal
directions and is displayed on three front panel 3 1/2 digit liquid crystal displays. The
full scale reading can be changed in four steps from 1000 mG to 1 mG. On the 1 mG scale,
the least significant digit corresponds to a field change of 10-6 G. The three axes
outputs can also be simultaneously monitored by oscilloscope or strip chart at provided BNC
connectors.