working principle

Elliptical gear flowmeterThe measuring chamber consists of a housing, a pair of gear rotors, and upper and lower cover plates, with a known volume cavity between them serving as the measuring unit of the flowmeter. The gear rotor is driven to rotate by the small pressure difference at its inlet and outlet, and continuously measures the liquid at the inlet through the cavity before sending it to the outlet. According to the number of rotations of the rotor, it is transmitted to the calculator (secondary meter) to indicate the flow rate.

Main technical parameters

1. Nominal diameter: 8-250 (mm)

2. Accuracy: 0.1, 0.2, 0.5 (level)

3. Pressure loss: 0-1000mpas ＜ 80kpa

4. Work pressure: 1.6-6.4Mpa

5. Temperature range: -20 ℃ to 200 ℃

6. Medium viscosity: 0.1-1000mpa? s

7. Environmental temperature: -30 ℃~70 ℃

8. Connecting flange: National standard, can also be manufactured according to the flange standard specified by the user

9. Explosion proof grade: intrinsically safe IaIICT4, explosion-proof dIIBT4

main advantages

1. Caliber ranging from 8-250mm;

2. There are multiple options for shell materials to choose from: aluminum, stainless steel, and cast steel PPS、 Bronze, etc;

3. There are various bearing materials to choose from: ceramic, bronze, Hastelloy, carbon compounds PPS、 Stainless steel sealed bearings, etc;

4. Material of the shaft: 316 stainless steel;

5. The materials for O-rings include VITON, fluororubber, stainless steel, and Teflon for selection;

6. The range ratio is 10:1, and the maximum can reach 50:1;

7. The accuracy is two types: ± 0.2% and ± 0.5%, with repeatability errors of 0.06% and 0.16%;

8. Filters need to be installed during installation;

9. The highest viscosity can reach 1000Pa. s;

10. The maximum pressure level can reach 6.3 MPa;

11. The maximum temperature resistance level can reach -20~40 ℃;

Typical Applications

Elliptical gear flowmeterIt can be used for measuring various viscosity ranges of media, especially for measuring low viscosity media. The product is widely used in industries such as petroleum, petrochemical, natural gas, chemical, paper, etc., for measuring small flow rates of small pipe diameters.