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ZF Electronics has developed the Cherry SD1012 series Hall-effect geartooth speed and direction sensor that suits the rigorous demands found in harsh automotive environments.

In modern vehicles, engine transmission is controlled by a large number of different sensors and controllers – for example, sensors are used on the transfer gears or on the output shaft to measure direction, speed and change of speed.

Typically, a gear sensor will have only a speed and direction output.

The Cherry SD1012 series from ZF Electronics has two discrete quadrature outputs, allowing it to be used with a splined geartooth.

The two outputs provide a better resolution for measurement in such applications.

As the SD101201 sensor has near-zero speed sensing capability, only minimal movement of the ferrous geartooth targets is required prior to recognition.

Capable of more than 8,000Hz target speed, this rugged sensor also features a locating mark to ensure correct rotational alignment.

Moreover, 10-bit dynamic threshold detection offers an automatically adjusting magnetic range and is self-compensating to target geometry and immune to target run out.

The Cherry SD101201 geartooth speed and direction sensor is available in a durable and robust flange-mount plastic housing, which suits harsh automotive environments and is qualified to an operating temperature range of -40C to 125C.

Although a low-cost package suitable for high-volume automotive applications, it also meets IEC60529 IP67 for dust and water protection.

ZF Electronics also offers OEM end customers a mapping capability – the customer can send in their target to be analysed with a Cherry speed or speed and direction sensor for best application results.

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