Multi-channel pressure gauge self-test device, self-test method thereof and self-test system thereof
A technology of self-checking device and pressure gauge, which is applied in the direction of measuring device, measuring fluid pressure, instrument, etc., can solve the problems of large error, complicated operation, high cost, etc., and achieve the effect of convenient control, simple operation and guaranteed consistency
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[0043] In order to solve the problems of high cost, complicated operation and large error of the traditional manometer self-test scheme, the present invention provides a multi-channel manometer self-test device embodiment 1, figure 2 It is a structural schematic diagram of Embodiment 1 of the multi-channel manometer self-checking device of the present invention; as figure 2As shown, a self-calibration module 210 may be included; the self-calibration module includes a plurality of pneumatic reversing valves 218; each pneumatic reversing valve 218 is respectively connected between the gas capacity 110 and the pressure sensor 120 of each channel of the multi-channel manometer; the pressure sensor 120 is connected to the micro control unit of the multi-channel pressure gauge; the self-calibration module 210 is also connected with the micro control unit;
[0044] The micro control unit sends the first reversing control signal and air pressure control signal to the self-calibratio...
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