SF6 density integrated monitoring device and method

The invention discloses an SF6 density integrated monitoring device and method. The device comprises a circuit box, a pressure transmitter, a temperature transmitter, a tee joint and an internal circuit module; a density instrument panel is installed on the outer surface of the circuit box; the internal circuit module is located in the circuit box; the first end of the tee joint is communicated with an air inlet of GIS equipment; a valve is arranged between the first end of the tee joint and the air inlet of the GIS equipment; the testing end of the pressure transmitter is arranged in a pipeline at the second end of the tee joint; the test end of the temperature transmitter is arranged in a pipeline at the third end of the tee joint; the internal circuit module comprises an analog-to-digital sampling unit, a central processing unit, a clock unit, a storage unit and a communication unit; the analog-to-digital sampling unit is electrically connected with the pressure transmitter, the temperature transmitter and