Reed switches in Petrol and Diesel Pumps
Petrol and diesel pumping stations are explosive environments where a minor mistake could cause a great big fire. Reed Switches and Reed Sensors, being hermetically sealed off from the atmosphere are one of the very few devices that are safe for use in such areas.
Petrol and diesel pumps use reed switches to sense if the nozzle has been placed in the holster properly so that the last volume filled display can be reset to zero. A tiny magnet embedded in the nozzle handle is made to activate a reed sensor mounted inside the holster.
Reed Switch based flow sensors, when used with very low level sensing loads such as 10V/10mA can operate up to a billion operations. These encoder type flow sensors that consist of a multi-pole magnet that rotates along with a paddle wheel in the pipeline gives square wave output which is used by the microprocessor to translate into the actual volume of petrol or diesel being pumped, and this is displayed on digital panels along with the day’s fuel prices.
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.
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.
MS-105 Miniature PCB Mountable Reed Sensor
| Drawing of MS-105 Reed SensorDrawing of MS-105 PCB Pad Layout starFeatures10W Contact Rating. 12.7 mm PCB Pitch. Normally Open Continue reading |
Oct 30, 2020
MS-106 Reduced Miniature PCB Mountable Reed Sensor
| Drawing of MS-106 Reed SensorDrawing of MS-106 Reed Sensor Pad Layout starFeatures10W Contact Rating. 15.2 mm PCB Pitch. Normally Continue reading |
Dec 2, 2020
RM-1318 Reduced Miniature Reed Switch
| The RM-1318 Reduced Miniature reed switches are designed for applications where a size restriction is present, but a higher Contact Continue reading |
Dec 2, 2020
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 |
Dec 2, 2020