LW150 wheel force transducer 150 kN

LW150: thin wheel force transducer for truck front axles, 150 kN

The LW150 measures all the wheel forces and moments on the front axle of class 8 trucks: vertical, lateral and longitudinal forces up to 150 kN radial (Fx, Fz) and 75 kN lateral (Fy), and camber, steer and torque moments of 40 kN·m each. The maximum recommended static load is 4,400 kg. Non-linearity and hysteresis are 0.5 % of full scale or less, crosstalk after correction 1 %. Of thin design and sealed to IP67, the transducer weighs 20.9 kg and operates from −40 to 177 °C. Its ± 100 g accelerometers give X and Z accelerations; angular resolution is 0.17°.

With an outboard slip ring, it fits 19.5 in and larger wheels: the amplifier package mounts onto the transducer and digitizes the signals before the slip ring. Inboard telemetry, for 22.5 in and larger wheels, keeps the assembly within the vehicle width; its stator, mounted close to the rotating telemetry ring, holds the receiver, the encoder pick-ups and the induction coil, and an induction module carries the smart chip. The CT3 interface box performs the zero, shunt calibration and zero angle functions and is set up from its embedded web page, over USB.

Staying within the vehicle width, it suits on-road testing of class 8 trucks; its IP67 design also covers the harshest track and off-road measurements.