Automatic calibration system for gas sensor
An automatic calibration system, gas sensor technology, applied in the direction of instruments, scientific instruments, measuring devices, etc., can solve the problems of complex working procedures, increased production costs, low production efficiency, etc., to improve production efficiency, save costs, and improve utilization. Effect
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[0012] Such as figure 1 As shown, a gas sensor automatic calibration system, which includes N groups of steel cylinders 7, N groups of solenoid valves 8, solenoid valve control circuits, N groups of gas mass flow controllers 9, DC power supply 6, high and low temperature alternating test box 3, A sensor gas cover 4, a sensor data acquisition circuit 10, an industrial control computer 1, and a liquid crystal display 2 connected to the industrial control computer 1 are arranged in the high and low temperature alternating experiment box 3;
[0013] Wherein, the outlet of the steel cylinder 7 is equipped with a pressure reducing valve, the outlets of N groups of steel cylinders 7 are respectively connected to the inlets of N groups of solenoid valves 8, and the outlets of N groups of solenoid valves 8 are respectively connected to the inlets of N groups of gas mass flow controllers 9, The outlets of N groups of gas mass flow controllers 9 are connected to the inlets of the sensor ...
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