Gas sensor
A gas sensor and external gas technology, applied in instruments, scientific instruments, measuring devices, etc., can solve the problems of inability to miniaturize and large structure of the gas sensor, and achieve the effect of fewer structural parts, fewer process steps, and simpler assembly.
Active Publication Date: 2012-08-15
RAE SYST SHANGHAI
4 Cites 17 Cited by
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The invention provides a gas sensor, which comprises a shell, a measuring electrode, a support, a counter electrode, a plug and a shell cover. The top of the shell is opened, the bottom of the shell is provided with a flange, and perforative pores are arranged on the bottom wall of the shell in a region surrounded by the flange; the measuring electrode is disposed in the region surrounded by the flange, and external gas reaches the measuring electrode via the pores; the top and the bottom of the support are opened, the support hermetically matches with the flange, and the measuring electrode is fixedly clamped between the shell and the support; the counter electrode is disposed in the support, and a first liquid absorbing material layer is arranged between the counter electrode and the measuring electrode; the plug is provided with an air outlet hole, and the first liquid absorbing material layer and the counter electrode are fixedly clamped between the support and plug; and the shell cover is provided with an opening, the shell cover is detachably connected with the top of the shell, and the opening hermetically matches with the plug and is communicated with the air outlet hole. Miniaturization of the gas sensor is realized, and the gas sensor is compact in structure and fine in liquid leakage prevention property.
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