Reed sensors in Power switches for explosive areas

Explosion proof enclosures come in different grades and house components like switches, plug, controls, knobs, and other sensors, and need to be resistant to spark and shock, dust and temperature changes. These enclosures are mandatory in petroleum, gas, chemical, mining, and textile industries as safety of the operating personnel is paramount.

Reed Sensors, being hermetically sealed and unaffected by the atmosphere and surroundings, can be used with sliding magnets in power switches to work as on / off switches in such environments, for example, where arcing could cause an explosion. Reed Switch based reed relays are also safe devices to use in explosive areas for switching higher loads. Specially developed reed switches with different contact material that minimize spark are also available.

Application Classification

Applications are classified as Position Sensing, Pulse Counting, Electromagnetic or Relay, Temperature Sensing or Magnet Biasing types. This application is classified as follows and the link gives more information on best practices to help select the most suitable AT band and matching magnet.

Electromagnetic or Relay Type

Reed Relay in Food Processor Application When it is necessary to control a circuit load by using a separate low-power signal, or where Continue reading -> Nov 7, 2020

Recommended Products

The Reed Switches and Sensors used in such applications need to be robust, durable and efficient in meeting a high life expectancy. Our engineers work hard in life testing our products under various conditions, and our intention is to ensure end product durability and life. Although we wouldn’t want to restrict any of our products for use in only certain applications, the recommended products for use in this application are listed below.

SM-1322 Sub Miniature Reed Switch

This Form A type SM-1322 Sub Miniature Reed Switch is built with a 2.25 mm diameter glass with a higher wall thickness for better glass to Continue reading -> Nov 8, 2022

MS-216 Standard size Cylindrical Sensor

MS-216 Magnet Sensor Drawing starFeatures10W Contact Rating. Normally Open contact. Three sensitivity bands. Sputtered Ruthenium Continue reading -> Oct 30, 2020

MS-216-L Cylindrical Sensor for Line Voltages

Drawing of MS-216-L Magnet Sensor starFeatures10W Contact Rating. Normally Open contact. Three sensitivity bands. Sputtered Ruthenium Continue reading -> Oct 30, 2020

LV-1925 Reed Switch for Line Voltage switching

The LV-1925 is a Line Voltage Reed Switch is designed for endurance at switching line voltage loads of 230V. Two versions are capable of Continue reading -> Dec 2, 2020