Use 
 Helical rotor flow meter (hereinafter referred to as dual-rotor meter) is used to pipe liquid flow measurement and control of precision instruments. Flowmeter can choose different materials, widely used in petroleum, chemical industry, light industry, commercial and scientific research departments, especially for crude oil, refined oil, light hydrocarbon liquids such as industrial measurement, is currently the latest generation of volumetric flowmeter . 
 The meter is equipped with a pointer, word round the counter, can indicate the cumulative volume of flow, the counter back to zero the device can also indicate a single cumulative, and output pulse signal for detection of secondary instrument or computer, for automatic control and data processing purposes. 
 Feature 
 1, high accuracy, wide flow range, and good reproducibility. 
 2, uniform spiral rotor, vibration, long life. 
 3, the viscosity of the liquid under test is not sensitive. 
 4, simple structure, small size and light weight. 
 5, easy to install.