The Novotechnik FTI inductive precision sensor is used to transform short linear travel paths into analogue electrical signals using a differential transformer with a movable core.
The core is located on a gauging pin which is pressed against the measured object by an integrated spring.
The sensor is supplied with direct voltage from which an integrated oscillator generates an alternating voltage to feed the differential transformer.
The secondary transformer voltages are rectified in a built-in demodulator. The oscillator and demodulator are designed using hybrid technology. The output current is strictly proportional to the displacement of the core and therefore to the measured path.
The non-contact sensors are virtually maintenance and wear free and boast a perfect reproducibility, resolution and linearity. The exchange can take place without recalibration. Magnetic fields have no effect on the measured signal.
The precision sensor is available in protection class IP50 and IP67 and due to its completely encapsulated housing and temperature compensating properties of its control loop coil, it can be used under rough environmental operating conditions.