The T4A/T4WA-S3 torque sensor is a compact, multi-functional torque sensor for measuring torque in any direction. The version with the T4WA-S3 also measures angle and speed. The sensor is easy to mount using the DIN 3121 external square connection.
The HBM T4A and T4WA‑S3 transducers provide torque measurement in any direction, with the T4WA‑S3 also measuring angle of rotation and speed. They feature simple square‑connection mounting, compact size and a range of nominal torques from 5 N·m up to 1 kN·m.
The data sheet lists detailed electrical and mechanical specifications, including accuracy classes, temperature ranges, protection rating and mechanical limits, enabling precise selection and integration into measurement systems.
| Nominal torque range | 5 N·m – 1 kN·m |
|---|---|
| Accuracy class | 0.2 (T4A) / 0.1 (T4WA‑S3) |
| Maximum permissible excitation voltage | 20 V |
| Operating temperature range | -10 °C … 460 °C |
| Degree of protection | IP50 |
| Weight (approx.) | 0.4 kg – 24 kg |
| Torsional stiffness | 0.29 – 65 kNm/rad |
| Output voltage (square wave) | 5 V TTL level |
The T4A has an accuracy class of 0.2, while the T4WA‑S3 achieves 0.1.
The transducers can be powered with up to 20 V excitation.
They operate from –10 °C up to 460 °C.
They are rated IP50 according to DIN IEC 60529.