ZMZ20 (Obsolete)

Description

he ZMZ20 is an extremely sensitive magnetic field sensor in a 4 pin E-Line package employing the magneto-resistive effects of thin film Permalloy. It allows the measurement of magnetic fields or the detection of metallic parts. The sensor consists of a chip covered with Permalloy stripes which form a Wheatstone bridge, whose output voltage is proportional to the magnetic field component Hy. A perpendicular field Hx is necessary to suppress the hysteresis and this can be provided by using a small permanent magnet.

Feature(s)

Output voltage proportional to magnetic field Hy

Adjustment of sensitivity and suppression of hysteresis by the auxiliary magnetic field Hx

Magnetic fields vertical to the chip level are not effective

Application(s)

Linear position sensors for process control, door interlocks, proximity detectors, machine tool sensing

Scalar measurement for compassing

Automotive - door switches, engine position and speed sensing

Metering of fluids by sensing rotation of impeller

Traffic counting and vehicle-type sensing

Measurement of current in a conductor without connection