Gas roots flowmeter and real-time accuracy monitoring method thereof

According to the technical scheme, the invention provides a gas roots flowmeter. According to the other technical scheme, the invention provides a real-time accuracy monitoring method for the gas roots flowmeter. According to the method, the pressure difference between the gas inlet and the gas outlet of the gas roots flowmeter can be monitored in real time, and therefore the smudginess degree in a flowmeter cavity is reflected. According to the measured numerical value of the pressure difference between the gas inlet and the gas outlet, the metering accuracy deviation of the gas roots flowmeter is calculated through modeling operation of the intelligent control part. If the metering accuracy deviation reaches one time of the maximum allowable error, alarm prompt information can be uploaded through prompt of a liquid crystal page or through wired remote transmission, wireless remote transmission and the like, a user is notified to maintain or repair the gas roots flowmeter, and user loss is avoided. 本发明的一个技术方