Reed Switch Level Sensor Circuit

However reed switches can be fragile to use directly hence this module can make it easier to handle and mount the sensor in various applications.

Reed switch level sensor circuit.

Reed switches and reed sensors are used along with resistors or special reed sensors with integrated resistor to give out a potentiometric feed back across two outputs as a foamed magnetic float moves along the pcb s length. A reed switch is a sensor that closes the circuit in the presence of a magnetic field. Reed switches are sometimes also fitted to the spinning arms of dishwashers to detect when they jam and in the thermal cut offs in electric showers to stop the water. The pcb tracks can be designed in such a way that a full tank gives high resistance and an empty tank gives low resistance or vice versa.

Magnetic float level sensor is composed of a reed switch a precision resistor and a single chip microcomputer circuit. How to use magnetic sensor and reed switch in projects a magnetic field from an electromagnet or a permanent magnet will cause the reeds to attract each othe. In its simplest and most common form it consists of a pair of ferromagnetic flexible metal contacts in a hermetically sealed glass envelope. The reed switch is an electrical switch operated by an applied magnetic field it was invented at bell telephone laboratories in 1936 by walter b.

Reed sensors can be used in many applications where contactless on off is required.