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The working principle of the reed switch

  For the reed pipe principle and its characteristics, use and other details to explain

  Reed switch is a small float level switch is the most important and most important accessories, the lack of this can not work, the water level switch manufacturers - things Xing Zhongcheng electronic reed switch is imported from Russia and Japan, its Stability has always been our pursuit. The following is mainly for everyone to explain the liquid level switch in the reed switch.

  What is a reed switch?

  Reed switch is a dry reed switch short, is a contact with the passive electronic switching elements, with a simple structure, easy to control the advantages of small, the shell is generally a sealed glass tube, tube with Two iron elastic reed electric board, also filled with a metal rhodium called the inert gas. Normally, two reeds made of special material in the glass tube are separated. When there is a magnetic material close to the glass tube, under the action of the magnetic field lines, the two reeds in the tube are magnetized and attracted to each other, and the reeds are sucked together to connect the circuit connected to the node. After the external magnetic force disappears, the two reeds are separated by their own elasticity, and the lines are broken. Therefore, as a circuit switching device controlled by a magnetic field signal, the reed switch can be used as a liquid level sensor, a float level switch for counting, a limit, etc. (mainly used in the security system for the door, Window magnetic production), but also widely used in a variety of communications equipment. In actual use, usually with permanent magnets to control the connection of these two metal pieces, it is also known as "reed switch."

  Reed Switch Features and Applications:

  First, the characteristics: dry reed structure is compact, small weight, can be installed in extremely limited space, very suitable for miniaturization equipment.

  The switch components of the dry reed are hermetically sealed in an inert gas atmosphere and will never come into contact with the external environment and have a long working life.

  Dry reed do not use sliding elements, so there will not be any metal degradation in the metal fatigue phenomenon, to ensure that virtually no limit of mechanical life.

  Normally open reed switch: Reed switch in the normal state of the shrapnel is open state, when affected by external magnetic force, magnetic force close to the reed, the shrapnel closed, the circuit connected. Of course, when the magnetic force to leave, the shrapnel is also broken, the circuit is broken.

  Normally closed reed switch: Reed switch in the normal state of the shrapnel closed state, when affected by the external magnetic force, magnetic force close to the reed, the shrapnel is broken, the circuit is broken. When the magnetic force to leave, the shrapnel also with the closure, the circuit connected.

  Second, the reed switch Application: Reed switch in the phone, program-controlled switches, copiers, washing machines, refrigerators, cameras, disinfection cabinet, Menci, window magnetic, electromagnetic relays, electronic weighing, level gauge, gas meter, And so have been a very good application.


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