An electronic tachometer is a straightforward enough device, in which the light reflections from a white spot on a rotating object are detected and counted over time, measuring the revolutions per ...

Universal, economical tachometer measuring rotational or surface speed either in contact or non-contact way. Universal, economical tachometer measuring rotational or surface speed either in contact or ...

The monitoring of rotation can involve such sensor types as proximity, photoelectric, resolvers, encoders, and tachometer generators. Most determine direction of rotation, speed, and angular position ...