Tank group metering management system and its operation method

A tank battery metering management system is characterized in that the system comprises a magnetostrictive liquid level gauge with average temperature, an average thermometer, a modular converter unit, a communication cable, an epigyny supervisor, a printer, an UPS power supply and an oil tank measuring system software; the working method comprises (1) liquid level measurement; (2) volume calculation; (3) temperature measurement; and (4) volume correction; the system has the advantages that various physical parameters of oils in an oil tank can be automatically obtained from a computer; the whole precision of the system can reach 0.08 %; remote monitoring can be realized by networks such as an ADSL, dialing and the like; the system is the digital product, bus type wiring, and has strong network extended capability; the communication interface of the software is transparent and can be connected with other systems and software; the precision of the liquid level and the water level of the oils measured by a liqu