The 8821 rotary sensor is available as either a speed sensor or an angle displacement sensor. It is built with an encoder disk coupled to the shaft, which is carried on 2 ball bearings. These components allow for use of up to 11^11 cycles.
Manufacturer : Burster Praezisionsmesstechnik Gmbh
| Type | Encoder |
| Full Scale | Continuous |
| Max Speed | 8000 RPM |
| Output | Quadrature TTL |
| Resolution | 1.00° |
| Excitation | 5 V DC 10 - 30 V DC |
| IP Rating | IP65 IP67 |
| Min Temperature | -10 °C |
| Max Temperature | 70 °C |
| 8821 Incremental Rotation Sensor, Rotary and Angle | Datasheet |