The Milli-Speed Sensor has a 4-20 mA output proportional to calibrated speed, it is designed to allow detection of belt slip & underspeed, stop motion, low speed or zero speed on bucket elevators, conveyors, airlocks, mixers, fans, grinders and many other rotating machines. Totally sealed and simple to calibrate, the Milli-Speed works in the harshest of conditions.
An inductive sensing device located in the nose of the Milli-Speed enclosure will detect a metal target. This target can be an existing bolt head or device attached to a shaft, such as 4B’s Whirligig® sensor mount. During installation, the Milli-Speed is set to the normal running RPM by simple magnetic calibration.

Product Features
- 4 - 20 mA Output
- Simple Magnetic Calibration
- Loop Powered (2 Wire)
- Totally Sealed Construction: Submersible
- Built In Conduit Adaptor (1/2” NPT)
- Easy Installation with Whirligig® Sensor Mount
- SpeedMaster™ Compatible for Accurate Testing
Electronics Application
Belt Conveyor
Belt Conveyor
Bucket Elevator
Bucket Elevator
Downloads
Literature Downloads
Product Datasheet - MilliSpeed
Full Line Catalogue - Electronic Components
Technical Manuals & Docs
Product Manual - Milli-Speed
White Papers
Hazard Monitoring Overview - GEAPS
Certificates
ATEX Certificate
IECEx Certificate
CCC Certificate