Double -rotator flow meter
What is Bi-Rotor Positive Displacement Flowmeter ?
Helical gear flow meters are typical volumetric flow measuring instruments which directly measure the quantity of flowing liquid by means of a couple of rotors known as helical rotors. It is a kind of positive displacement flow meters according to Roots principle, The double case combines the rugged durability and long service life of the BiRotor flow meter.
Helical gear flow meter is a kind of bi rotor flow meter positive displacement, it can be mechanical type flow meter, or equipped with electronic BiRotor transmitters and digital display and frequency to current converters are available for remote totalization, recording and presetting of metered volumes.
They may be used for custody transfer purposes, operating controls and for the many other needs of the petroleum, chemical, pharmaceutical industry, etc.
BiRotor positive displacement meter features:
- No pulsation
- Low noise
- High accuracy
- High reliability
- Large turn down ratio
- Small pressure loss
- Can measure fluids with max 3500 cp viscosity, used as high viscosity Bi rotor positive displacement flow meter
- Can work on high temperature fluids ( max 200 degrees Celsius )
- Easy calibration and easy installation
Helical Gear flow meter Technical Specifications
- 1. Accuracy level: 0.5%, 0.2%, high accuracy flow meter.
- 2. The temperature of the measured liquids: with high temperature radiator, max temperature can reach 250 °C, can be made into high temperature flow meter.
- 3. Ambient temperature can be -41 ° C ~ +60 ° C
- 4. Repeatability error: the repeatability error of the flowmeter does not exceed 1/3 of the basic error
- 5. Flange standard: DIN ,PN16,PN25,PN40,PN64, JIS standard,10K,30K, ANSI,150LB,300#,60 LB standard.,etc. Can be made into high pressure positive displacement flow meter.
- 6. Mechanical positive displacement flow meter or option with electronic transmitter to have digital display, pulse output or 4-20mA output; digital output RS485, MODBUS or HART protocol;
- 7. Bi rotor flow meter flow meter size: 1inch, 2", 3 inch dial BiRotor flow meter, 4 inch helical gear flow meter, 6 inch positive displacement flow meter, 8 inch Bi rotor flow meter, DN200 helical gear flow meter, 10 inch Brodie International BiRotor Positive Displacement Flow Meter, 12" Positive Displacement Flow Meters;
- 8. Material options for Bi-rotor flow meter: cast iron, cast steel, stainless steel 304, SUS 316;
- 9. Flow range (below is typical flow range for diesel volumetric flow measurement)
| DN (mm) |
15-400mm |
| Accuracy |
0.1%,0.2%,0.5% |
| Pressure loss |
0-1000Mpas less than 80Kpa |
| Working pressure |
1.6,2.5,4.0,6.3,10,16,20,42Mpa |
| Temperature range (centigrade) |
-40 to +80,-40 to +150,-40 to +250, -40 to +350 |
| Medium viscosity |
0.1-1000Mpa.s |
| Ambient conditions |
Temp.-30 to +70, Humidity 5%-95%, Atmosphere 86Kpa-106Kpa |
| Protection level |
Intrinsic safety and explosion-proof |
| Ex-proof grade |
PDF Book IaII CT4, Isolation dII BT4 |
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