ZF’s New Compact Magnet Carrier Ideal For Harsh Environments

“New compact Magnet Carrier 709-21995 for use with existing Hall-based angle sensors for precise and wear-free angle measurement”.

ZF presents its new compact Magnet Carrier 709-21995 for use with existing Hall-based angle sensors for precise and wear-free angle measurement. These are ideal for harsh environments such as in the steering system of forklifts and other off-road vehicles. The combination of the new magnet carrier with the ANG angle sensor offers enormous advantages in limited space due to its small dimensions.

ZF offers several angle sensor variants that differ between the redundancy of the output signal: non-, semi or full redundancy, (primarily for safety requirements), the measuring angle and the cable connection and connector type. These variants support flexible use in individual application areas of angle detection. The ANG sensor is the newest in the ZF angle position sensing portfolio. With its length of 3.2 cm and width of 4.5 cm, it fulfills strict requirements in respect of limited space in customer applications and has an extended temperature range (-40 to 140°C), high accuracy (+/- 2% to +/- 2.5%) and is rated IP68. Depending on the desired security, the ANG angle sensor is available in a simple version with three cable outputs but without a redundant output signal, or with four cables and a semi-redundant output signal.

The brand new and extremely compact magnetic carrier from ZF is ideally suited for combination with angle sensors over a measuring range of up to 360°. It works perfectly in conjunction with the ZF Hall sensors. The plastic carrier housing contains a rare earth magnet consisting of a samarium-cobalt compound. It is equipped with two brass bushings to attach the magnet carrier to the target object reliably. The magnet carrier has primarily been designed to serve applications with limited space. It is only 2.4 cm long and 1.8 cm high.

An application example is electric steering (steer by wire) in forklifts, one that ZF sensors and magnet carriers are already well established. The target is for the precise implementation of the desired steering angle from the driver to be communicated to the vehicle. The small magnet carrier is mechanically attached to the steering axle with M3 screws and rotates without contact. It is therefore wear-free over the Hall element of the sensor.

 

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