The mercury switch is switched on and off according to the movement of mercury enclosed in a glass casing or a metal casing. Therefore, the mercury switch has many characteristics compared with the mechanical switch:
1 can be used under harsh environmental conditions. Since the mercury switch is sealed, the internal mercury is isolated from the outside world, so it can be used in environments with oil, steam, dust and corrosive gases.
2 The external force required for the continuity is small. Mercury is the only metal that can remain liquid at room temperature. It has a large surface tension and specific gravity. As long as the external force is applied to tilt the mercury switch, the mercury can move and the switch can be turned on and off.
3 Mercury has good conductivity, and the contact resistance between mercury switch electrodes is generally less than 100mΩ.
4 The current allowed by the mercury switch depends on the material of the electrode. The maximum allowable current of the tungsten wire electrode is 10A, while the maximum allowable current of the general alloy wire is generally 1A.
5 Since the on/off of the mercury switch is determined by mercury gravity, it can work reliably for a long time.
The contacts of the 6 electrodes are in liquid contact without any noise.
7 Since mercury can flow, as long as the acceleration reaches above the set value, the mercury switch can be turned on or off, and thus can be used as a sensitive component of vibration.
8 small in size, various forms, and is a fully sealed device.
9 simple structure and low price.
10 high quality, high quality products, suitable for beginners.
