The Noris FA5HZ Speed Sensor is designed for speed sensing. The FA5HZ senses the rotation of ferromagnetic toothed wheels by means of a differential Hall-effect sensor chip, and is converted by a signal amplifier into a rectangular signal. The frequency of the rectangular signal is proportional to the speed.
Apart from speed, the pick-ups are adapted to sense any movement of ferromagnetic parts. The rectangular signal lends itself to evaluation or transformation by a variety of devices. A second sensor system is integrated to detect the direction of rotation. The two systems are arranged mechanically in the sensor head such that a 90° phase offset is obtained in module M2 between the output signals. The rectangular signal lends itself to evaluation or transformation by a variety of devices.
Features
For rigorous conditions in rail transport, shipbuilding, and industry
High-grade speed pick-up with rectangular-pulse signal output
Two scanning systems with signals 90° offset to detect speed and direction of rotation (in module M2)
For use in conjunction with ferromagnetic toothed wheels from module m1.5 up
Frequency range from < 0.1 Hz to 20,000 Hz
Senses very low speeds (near-zero-speeds) with wide pulse spacing
Unaffected by out-of-true errors, vibrations and electric motor magnet fi elds
Push-pull output stage
Loadable with 50 mA SINK and 20 mA LOAD
Mounting position is direction-sensitive
High degree of EMI immunity for severe electrical environments
Wide operating temperature range from -40°C ... +100°C
Pole-piece is metal-enclosed
Rugged construction, IP68 case tested for pressure-tightness at 5 bar
Optionally, cables with protective function.
