Driving factors according to the prediction of the International Energy Agency (IEA), from 2007 to 2030, the world needs to invest $26.0 trillion in energy infrastructure (in 2007 dollars). Among them, the investment in the power industry is US $13.6 trillion, accounting for 52.3% of the total investment. By 2030, the infrastructure of oil, gas and electricity in many parts of the world will need to be replaced.

The flowmeter is a two-way measurement system with three integrators installed inside: forward total amount, reverse total amount and difference total amount; It can display positive and negative flow, and has a variety of outputs: current, pulse, digital communication, Hart; The converter adopts surface mount technology (SMT), with self inspection and self diagnosis functions