Sensor and evaluation in one housing – also with ATEX approval
Compact speed monitoring
The new speed sensors are the compact solution for speed monitoring because the evaluation electronics are integrated in the sensor housing. The limit at the speed of which the output switches is set via a potentiometer. Both rotary and linear movements can be monitored for overspeed, underspeed and blockage. As compared to its predecessors, these new sensors feature a robust metal housing for flush mounting. An additional impact protection housing is not required. A special version with ATEX approval is also available.
Especially in the field of conveying technology the compact speed sensors can be used for various applications, for example for monitoring belt conveyors or bucket elevators. Here they are typically used to monitor underspeed, blockage or standstill.
The speed sensors incorporate the complete speed monitoring because the evaluation electronics and the sensor are integrated in one housing. The switch point is set using a multi-turn potentiometer. Hysteresis and start-up delay are firmly set.
The integrated sensor is damped by passing cams or other metallic targets. On the basis of the time interval between damping the evaluation unit determines the period duration or the frequency (actual rotational speed value) and compares it to the set switch point (preset value). The output is switched during the start-up delay and when the rotational speed exceeds the set switching value. An LED signals underspeed and switch-off of the output.