KISTLER WPT Sensors
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.
Features
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
Specifications
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 | |
