Reed switches and Float switches in Water tank control
Water is a scarcity in most of the major cities of the world, and in residences and apartments where an overhead tank is present, measures should be taken to ensure there is no overflow. Reed Switch based float switches fitted in the over head tank, are used to control the pump, which fills the overhead water tank.
Two of these float switches are fitted into the tank, at the near empty level and the full level. These signals are given to a controller, which turns the pump on when the tank level reaches the near empty point, and off when the tank has been filled up. This is also particularly useful for blocks of apartments with a common water tank for all tenants.
Care should be taken to protect the reed switches from the static capacitance caused by the long wires running from the float switches to the controller. Multiple reed switches in longer float switches are used to give out more information, for example, quarter and half tank levels et cetera that can then be sent to intelligent controllers for sending out push notifications to mobile devices when the pump is turned on but the water level does not rise (power failure) or even assess at which times consumption of water is high or a tap has been left open.
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.
FS-V Float Switch for Vertical Mounting
|Normally open (NO) and normally closed (NC) contacts, capable of switching loads of up...Continue reading|
SM-1322 Sub Miniature Reed Switch
|The SM-1322 is a robust and reliable, Form A type 13.0 mm Sub Miniature...Continue reading|