Dry reed pipeprinciple:

The dry reed pipe is referred to as the dry tongue reed pipe, a contact passive electronic switch element, has simple structure, urine volume in control, and other advantages, its shell is generally a sealed glass tube and pipe is equipped with two iron elastic reed panels, filling inert gas with a metal rhodium. Usually, the glass tube two is made of special material is separated from the reed. When the magnetic material near the glass tube, in under the action of the magnetic field lines, two reeds of the inner pipe is magnetized contact to attract each other, reed will pull together, nodes are connected to the circuit connectivity. External magnetic force disappears, two reeds separated due to its elastic line, also is broken. Therefore, as a the use of magnetic field signal to control the circuit switch device, a dry reed pipe can as a sensor, for the count, limit and so on (in the security system is mainly used for making Menci, window magnetic), and is also widely used in a variety of communication devices. In practice, the connection of the two pieces of metal is usually controlled by a permanent magnet."Magnetron".

Features and applications:

1,A dry reed pipe has the advantages of compact structure, light weight, can be installed in an extremely limited space, suitable for the miniaturization of equipment.

2,A dry reed pipe switch components are hermetically sealed in an inert gas atmosphere, always does not contact with the outside environment, service life long.

3,The sliding element is not used in the dry tongue reed pipe, wont appear so in all metal degradation of metal fatigue phenomenon, to ensure that in fact no limit and the service life of the machine.

4,Magnetic reed switch in mobile phones, program-controlled switches, copiers, washing machines, refrigerators, camera, disinfection cupboard, Menci, window magnetic, electromagnetic relay, electronic weighing apparatus, liquid level meter, gas meter, water meter and so on have been very good application.

Reed notes:

1,Shear or bending dry reed pipe for the lead foot when must be extremely careful, so as not to exert undue stress and make the glass to metal seal damaged. Appropriate clamping tools must be used.

2,Exposure to temperature and excessive exposure time may result in damage to the glass metal seal (cracking, leakage, etc.), and therefore must be fast and reliable welding technology (process). The proposed welding conditions are: hand welding280~300 ~ C, wave soldering250to300 ~ C.