<1> Feature
Smith2011 Three Rotors (also called fixed metal scraper) flow meter is a generation of new products after smith2012 sliding metal scraper flow meter, and it is made of a shell and a special rotor which contains three synchronous rotation ,These rotors were installed in three different shapes of rotor inside.The internal component of the flow meter have no direct contact of metal and metal. No contact ,there is no wear and tear; no wear and tear, the gap will not be increased; the gas not increase, the leakage will not increase ;the leakage not increase, accuracy can keep as new forever. The seal of rotor and rotor is sealed by the line, its seal area is the smallest, and this ensure the minimize friction of fluid with the rotor, so its pressure drop is smallest compared with any other listing of the displacement meters, and the leakage is minimum. achieve in large and medium viscosity at the end of the scope of the flow of time, has good accuracy (such as liquefied petroleum gas, etc.)
All of the rotor rotating around their own axes. In the entire turning process, all angle formed by the peripheral surface of the rotors keep invariable, and each rotating semi-circle, the rotors form 1 ~ 20 mm wide impurities channel (Path small channel dimensions are small) naturally at different times .This ensure the smooth dielectric measurements to the viscosity of the material (such as: wax, glue, ink) and contain fiber, sand (for example: pulp, cement mixing of crude oil, asphalt, animals feed).
Flow meter rotors are formed after precision machining, whit no reciprocating movement and swing in the flow meter internal, smooth rotation,and these have an extremely long service life.
<2>Accuracy, function and application
Will other conditions remain unchanged, for flow measurement, with the best accuracy. Its 50:1 within the context of repeatability error does not exceed 0.05%.Accuracy has nothing to do with the fluid viscosity. As Smith III shear rotor flow meter and the smallest surface smooth flow characteristics, Smith low viscosity-type three rotor instrument to accurately measure viscosity <2mPa.s media, standards-based measurable 2 ～200mPa.s medium and high shape under different environmental measurable 200 ～ 350,000mPa.s the media.
Temperature changes will not affect the accuracy of flow meter. Rotor flow meter that three key components have a common linear expansion coefficient, medium -40℃～+80℃ without amendment, to be precise determination. Amended application medium temperature can be as high as 350℃ 
<3> Adapt Media
Acid,、alkali、 salt、 water、oil and other various types of liquid medium.
<4>Special functions and Attachment
According to customer demand, product can be built-in automatic system smooth, automatic generation devices, automatic temperature compensation devices. And let provide, filters, pipes stretching connector, and other products
<5>The largest nominal flow rate and the corresponding pipeline connection(second)