Description
Sensor principle:
The key component of a draw wire sensor is a highly flexible steel wire rope, that is winded singlelayered on an ultra-light capstan. This capstan is connected to the sensor housing by a prestressed spring. The end of the steel wire rope, that is equipped with a rope clip gets connected to the target object. As soon as the distance between sensor and target object changes, the steel wire rope gets pulled out of the sensor and is rolled off the capstan (or vice versa). The shaft of the capstan is connected to a potentiometer (for analog output signals), or to an encoder (for digital
output signals). If there is a rotation of the capstan due to a change in the distance to the target object, the sensor element will turn proportionally. This way the potentiometer, or the encoder converts a linear movement into a proportional electrical signal. If a standard analog output signal, like 0...10 V or 4...20 mA is needed, the sensor is equipped with additional electronics.
Technical data
Ranges from 50 to 5000 mm
Linearity max. ±0.02 %
Output analog 0...10 V, 4...20 mA, Potentiometer
Output digital TTL, HTL, SSI, Profibus, CANopen, EtherCAT, Profinet
Protection class IP65 (optional IP67)
Download
Datasheet SX50 up to 1.25 m| SX80 up to 3 m| SX120 up to 5 m
