
Cylindrical Magnetic Reed Sensor
A magnetic reed sensor responds to a magnet rather than to metal. That gives it a decisive advantage in one common situation: sensing through a non-magnetic wall.…
Reed, Hall-effect and variable-reluctance pickups for cylinder position, speed and RPM measurement.
Magnetic sensors respond to a magnetic field rather than to metal. That gives them one decisive advantage: they sense through non-magnetic walls, so the magnet can sit inside a sealed cylinder, tank or enclosure while the sensor stays outside with nothing penetrating the barrier.
The range covers reed switches in cylindrical and rectangular housings, Hall effect sensors that work down to zero speed, and variable-reluctance magnetic pickups for shaft speed and RPM.

A magnetic reed sensor responds to a magnet rather than to metal. That gives it a decisive advantage in one common situation: sensing through a non-magnetic wall.…

The rectangular reed sensor offers the same magnetically actuated switching as the cylindrical version in a flat block housing — easier to bolt to a flat surface,…

A magnetic pickup generates its own signal. As the teeth of a gear or a toothed wheel pass the sensor face, they disturb the field of an internal permanent magnet…

A Hall effect sensor detects the presence of a magnetic field rather than a change in it — which means, unlike a magnetic pickup, it works right down to zero speed.…
Every product in this category can be adjusted to your application. Specify any of the following at enquiry and we will quote against it:
Yes, unless the application already has one — a pneumatic cylinder with a magnetic piston, or a magnetic float in a level assembly. Tell us the sensing gap and we will recommend a suitable magnet.
A reed switch is a mechanical contact — simple and needs no standby current, but has a finite mechanical life. A Hall sensor is solid state, switches faster and lasts indefinitely, but draws a small standby current. For high switching rates choose Hall effect.
Through non-magnetic austenitic stainless such as 304 or 316, yes. Through magnetic stainless grades or mild steel, no — the wall shields the field.
Send us your application — target material, sensing distance, supply voltage and housing constraint. We will recommend a part, quote it, and ship from Mumbai.