Pressure detector for miniature instrument

The utility model relates to an instrument detector, specifically a pressure detector for a miniature instrument, comprising a sealing pot, a pressure gauge, a cable hole, a connecting pipeline and multiple valves, wherein the sealing pot is equipped with the pressure gauge and the cable hole respectively, the miniature instrument to be detected is arranged in the sealing pot, and a single line arranged on the miniature instrument and used for inputting and outputting signals comes out by means of the cable hole; and the upper, middle and lower portions of the sealing pot are respectively provided with connecting pipelines communicated with the outside, and each connecting pipeline is equipped with a valve. The pressure detector is simple in structure, convenient in manufacture as well as convenient and reliable in use, can fast and conveniently detect the action execution cases of the miniature instrument under different pressures, and the signal line for communication signals of the instrument comes out by means of the cable hole on the sealing pot. The execution cases of a test device under different pressures can be detected and then an operation instruction is sent, and a certain constant voltage is kept within a measuring scope.