Magnetic Speed Switch and Relay Sensors

Standex Electronics' speed sensors deliver contactless magnetic sensing for precise measurement of zero-speed, under-speed, and over-speed conditions of steel gears, ferrous targets, and magnets in a wide range of transportation and industrial applications. Through Hall effect solid state technology, users can expect precise, bounce-free operations over a wide temperature range for a long lifetime. The Hall effect speed sensors resolve linear and rotational speed using a programmed frequency output that converts to rotations per minute. Steel gear, ferrous target, and south-pole sensitive magnet-actuated speed switches turn on or off at the factory programmed frequency, signaling a transistor or relay output.

In addition to 0 to 32 pitch gear, the speed switch sensors can detect non-standard steel targets such as bolt heads, holes in steel plates, and other ferrous objects. Gear tooth and ferrous target-actuated speed sensors work in any orientation, and the air gap can be easily set within the target range using the supplied lock nuts for threaded housings. South pole sensitive magnet-actuated speed switches detect the presence and absence of south pole fields of 55 Gauss or more. The operating gap range is dependent upon the magnet size and type.

Standex Electronics' can configure their speed switch sensors for normally closed or normally open relay outputs, NPN outputs, and TTL outputs. They also offer custom programmed switch points to a user's desired application. Modify, update, or enhance any sensor with a large selection of housings and connections. Sensor housings include but are not limited to molded, aluminum, stainless steel, threaded, flange mount, and customer specific packages. Connection types include integral connectors, Deutsch, Amphenol, pigtails, and free-end wires, any length. Typical applications include true zero-speed, under-speed, and over-speed conditions of gears and shafts in automotive and heavy equipment, agricultural equipment, and other ferrous targets such as pulleys in manufacturing and industrial systems.