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WPT sensors are universally adaptable sensors for the acquisition of vehicle wheel speed. The sensors deliver 10 to 5,000 pulses per rotation (standard, other values on request).

WPT sensors are ultra-compact and extremely light in weight. For maximum flexibility, the incremental transducer unit of the WPT can be exchanged quickly and easily. Output signals generated by the WPT sensors provide the basis from which wheel rotation speed, acceleration, distance, and speed are calculated (measurements of this kind are afflicted with slip and dependent of the dynamic wheel circumference.


For detecting wheel rotation to calculate wheel speed, distance traveled, and vehicle speed.

  • Easy installation
  • Compact design and lightweight
  • Rugged housing
  • Reverse-polarity protection
  • Degree of protection IP67
  • Optional: DTI function


Basic Mechanical Data

Permissible rotational speed Maximum 6000 min-1
Continuous operation 3000 min-1
Available pulse values Standard 10…5000 pulses/U
Other On request
Operating temperature range –40…85 °C
Degree of protection IP67
Schock resistance (DIN IEC 68-2-27) 2500 m/s²
6 ms
Vibration resistance (DIN IEC 68-2-27) 100 m/s²
10…2000 Hz

General Electrical Data

Max. permissible load/channel ±20 mA
Max. pulse frequency 300 kHz
Reverse polarity protection for the power supply Yes
Output signal 1) 2 channels
A+B 90°
shifted 1 zero impulse/ rotation
Electrical connection2) 8-pin M12

1) All signals with inversion
2) Radial flange connector on the housing, pins individually sealed, IP67 in an unplugged condition

Electrical Data RS-422 (TTL Compatible)

Power supply, UB 5…30 VDC
Power consumption without load Typical 40 mA
Maximum 90 mA
Signal level High (min.) 2,5 V
Low (max.) 0,5 V
Rise and fall time (max.) 200 ns
Short-circuit proof outputs Max. 1 connected channel