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Magnetic field tester for power frequencies

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article image Schaffner MFO 6501 magnetic field testing device.

THE new Schaffner model MFO 6501 magnetic field testing device, available from Westek Electronics , provides for power frequency testing in accordance with EN/IEC 61000-4-8 and 61000-4-9.

The device is comprised of a programmable low impedance power amplifier, driving magnetic loop antennas such as the Schaffner INA 702 or 701, or loops to individual customer requirements. With the Schaffner INA 702, field strengths of up to 40 amp/metre can be achieved.

The operation of the stand-alone tester is achieved via a toggle-switch which selects either a 50Hz or 60Hz signal, a switch to select current range and rotary control for fine continuous adjustment.

Features of the MFO 6501 include short circuit proofing, and reduced size and weight particularly when compared to transformer-based solutions.

Pulsed field testing can also be done through the interposing the Schaffner INA 752 pulse wave shape adaptor between the MFO 6502 power amplifier and the INA 701 or 702 loop antennas.

Field strengths of up to 1200 amp/metre can be achieved.

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