Rotating torque sensor has wireless signal transmission

The maintenance-free, long term reliability advantages of the contactless signal transmission come at about the same cost as slip-ring types.

The Kistler Type 4520A, a strain gauge torque sensor for use at speeds to 10,000 rpm, is available in 10 ranges from 1 to 1000Nm all with ±10V analogue signal output, a TTL speed signal at 60 pulses/rev, an overload capacity of 150% and an external 100% range check input are all standard. The high frequency response and robust anodised aluminium body giving IP40 protection makes the Type 4520A suitable for static and dynamic measurement of rotating torque in assembly and quality control in production and for R & D applications.