The Model M185 Unipulser is a single pulse per revolution, zero speed (operational down to zero RPM) pulse generator which requires no coupling to the shaft for which rotational speed is being measured. The pulse generator consists of a magnet assembly which clamps around the shaft and a transducer assembly which mounts in proximity to the magnet assembly. Refer to the Outline Drawing for specific dimensional information.
The Model M185 is designed for applications where an end shaft is not available for coupling to other types of rotary pulse generators. When the M185 is used in conjunction with a speed measuring system like the Avtron Model K885, it is possible to measure roll surface speed to 0.01%, with a 1 second measurement period for any shaft speed from 60 to 3000 RPM.
The magnet assembly is supplied with an adjustable fastener and sufficient band material to accommodate shafts ranging in diameter from 2 inches to 9 inches. For smaller diameter shafts, a hose clamp (not included) with a 0.5 inch wide band may be used. For larger diameter shafts, longer lengths of band material are available from the factory.
: 5-15 VDC @ 30 mA
Pulses Per Revolution (PPR)
Max Frequency Output
: 50 Hz
: 0 to 3000 RPM
: 32°F to 150° F
- Wave Shape: Square
- Volts Out High: Supply Volts
- Volts Out Low: 0.5 VDC Max @ 10 mA
: Normally high. Switches low when sensing magnet.
- Magnet Assembly: 1 oz.
- Transducer Assembly: 2.5 lbs