The GD3(C) mine gas drainage multi-parameter sensor is used to measure flow rate, pressure, and temperature parameters within the gas drainage pipeline. It features automatic conversion to standard condition flow rate values, supports automatic zero calibration, and can display data such as flow rate, temperature, pressure, methane, carbon monoxide, date, time, pipe diameter, as well as cumulative values of mixed and pure quantities on the same local screen. With Bluetooth communication capabilities, it allows for parameter settings, device operations, data display, and other functions through a mobile terminal.