Gas Roots Flowmeter displacement measuring instrument as more than a hundred years of history, with its high precision, wide measuring range, small size, light weight, easy installation and maintenance, use, reliable and durable service life, widely used measurement of natural gas, coal gas, inert gas, air and other gases flow in, the city gas sector at home and abroad, oilfield chemicals, scientific research ideal flow metering device. An S. Control Instrumentation Co., Ltd. adhering to meet market demand, in pursuit of perfect quality as the goal, diligently explore, continuous improvement, product components using machining centers, CNC lathes, and precision grinding machines, balancing machines and sophisticated inspection equipment, the United States five Calibrator, 1600m3 large automatic detection devices, sophisticated equipment, reasonable process, strict testing to ensure the quality and interchangeability of each part, while ensuring the quality and consistency of the finished table. ??????? Works: LLQ series gas Roots Flowmeter, mainly from the shell, conjugate rotor and counting devices and other member. Installed in the measuring chamber a pair of conjugate rotors at the entrance of the gas flow pressure (P into the> P out) effect, by precision machining of the rotor gear adjusted to maintain the correct relative positions. Between a rotor and the housing, between the rotor and the wall to maintain the best working space to achieve a continuous non-contact seal. Rotor per revolution, four times the output of the metering chamber volume of gas, the number of revolutions of the rotor by means of magnetic coupling and sealing the reduction mechanism, is transmitted to the integrating counter directions, thereby displaying the output of the cumulative volume of gas,