Abstract: The disclosure includes an intelligent automatic control system for mine gas chromatographs, comprising a CPU. The system may comprise a touch screen coupled to the CPU, a computer and a relay unit electrically coupled to the CPU, and a remote transmission module and a remote mobile control terminal communicatively coupled to the CPU. A digital output terminal may be electrically coupled through the relay unit to a component selected from the group consisting of a solenoid valve, at least one heater, a chromatograph motor, a six-way injection valve, a ten-way injection valve, a chromatograph automatic injection pump, FID ignition coils, a TCD bridge solenoid valve, at least one gas generator solenoid valve, and a standard gas/sample gas conversion valve. The system may comprise at least one temperature sensor, at least one gas pressure sensor, a TCD bridge module, and at least one pressure-controlling switch electrically coupled to the CPU.

Abstract: The disclosure includes an intelligent automatic control system for mine gas chromatographs, comprising a CPU. The system may comprise a touch screen coupled to the CPU, a computer and a relay unit electrically coupled to the CPU, and a remote transmission module and a remote mobile control terminal communicatively coupled to the CPU. A digital output terminal may be electrically coupled through the relay unit to a component selected from the group consisting of a solenoid valve, at least one heater, a chromatograph motor, a six-way injection valve, a ten-way injection valve, a chromatograph automatic injection pump, FID ignition coils, a TCD bridge solenoid valve, at least one gas generator solenoid valve, and a standard gas/sample gas conversion valve. The system may comprise at least one temperature sensor, at least one gas pressure sensor, a TCD bridge module, and at least one pressure-controlling switch electrically coupled to the CPU.

Abstract: The disclosure includes a gas chromatograph for underground use comprising a fixing board. In some embodiments, the gas chromatograph for underground use includes a power connection socket, at least one three-way solenoid valve, a quantitative loop, an analysis module, a communication main board, a data transmission device, a sample injection membrane valve, and a gas injection pump detachably coupled to the fixing board. In some embodiments, the quantitative loop and the sample injection membrane valve are arranged and configured to couple to at least one of the at least one three-way solenoid valves.

Abstract: The disclosure includes a gas analysis system comprising a control system. In some embodiments, the control system comprises a computer monitoring host, an underground coal mine gas circuit control box including an intrinsically safe PLC, a sampling pump electrically coupled to the remote power control, an explosion proof safety power box electrically coupled to the intrinsically safe optical fiber switch, and an intrinsically safe gas chromatograph electrically coupled to the intrinsically safe optical fiber switch and the flameproof and intrinsically safe power box. In some embodiments, the gas analysis system comprises a gas pipeline system having an instrument sequence tube coupled to the carrier gas output pressure sensor, the carrier gas proportional solenoid valve, the carrier gas path pressure sensor, a manual carrier gas pressure reducing valve, and a carrier gas storage.

Abstract: The disclosure includes a flame proof analysis device comprising a first chamber. In some embodiments, the flame proof analysis device comprises a power supply unit coupled to the first chamber. According to some embodiments, the flame proof analysis device comprises a chromatograph circuit board coupled to the first chamber. The flame proof analysis device may comprise a communication board coupled to the first chamber. In some embodiments, the flame proof analysis device comprises a control panel coupled to the first chamber. According to some embodiments, the flame proof analysis device comprises a suction pump coupled to the first chamber.