PD positive displacement rotary vane flow meter

Intoduce

positive displacement rotary vane flow meter belongs to positive displacement meter and is one of the most accurate measuring meters for measuring liquid of modern industry. The flow meter has stable  performance and is insensitive to flow state change of upstream medium and change of medium viscosity. It has high measuring accuracy，good applicability and long life. Now it has widely used for every field such as process control of modern industry and trade settlement, etc.

 Positive Displacement Rotary Vane Flow Meter

Main technical parameters 

1．Intrinsic Error：0.2%；0.5%  

2．Nominal Diameter (mm)：25mm；50mm；80mm；100mm；150mm；200mm；250mm；300mm；  

3．Nominal Pressure：2.5MPa；4.0MPa； 6.4MPa；  

4．Flow Rate Range:

5．Operation Temperature: -20^。C ～ +250^。C；(special temperature should indicate.)

6．Fluid Viscosity: 0.6～500mPa.s ( kinematic viscosity)

7．Pressure loss: no more than 0.1MPa(such as nominal diameter is DN80)

8．Min. Indication Unit: For equipped with mechanical header, subject to the model of selected header. 

For equipped with intelligent header:  0.001m³ 

9. Integrated Flux: For equipped with mechanical header, subject to the model of selected header.

For equipped with intelligent header: 99999.9999 m³  

10. Coefficient of theoretical instrument: only for equipped with intelligent meter. 

Main features

◆The meter can be equipped with mechanical integrating instrument to realize local indication, and can be equipped with pulse signal transmitter or intelligent instrument to realize signal remote transmission;

◆High precision, the highest accuracy class is 0.2;

◆Rotary vanes are wear-resistant, and the vanes can operate in high pressure condition.

◆The pressure loss is small. Attenuation of accuracy is low and the pressure loss is no more than 0.1Mpa. (Such as nominal diameter is DN80)

◆The structure of the single housing is simple and the weight is light, The structure of double housing can not be influenced by thermal expansion and pressure, and deformation is very small.

◆Installation for the meter is very convenient , no need for auxiliary equipment such as straight pipe section, rectifier, etc. The meter cannot be influenced by pipe pieces such as valves, elbow, etc.

◆The meter can work very stable with no vibration and noise.

◆the pressure drop is more than velocity-type flow meter, but is better than other positive displacement meter.

PD Positive Displacement Rotary Vane Flow Meter

Model Selection Table

Example  

PD-50Q2.5Z1i: Positive displacement rotary vane flow meters

◆Nominal Diameter: 50mm;

◆Material of the Body Case: Nodular cast iron;

◆Nominal Pressure: 2.5MPa;

◆Equipped with intelligent instrument with local indication and remote pulse signal remitted by transmitter;

◆Explosion-proof type: intrinsically safe

 Positive Displacement Rotary Vane Flow Meter

Outline and installation dimension

1、Structure and dimension

For PD positive displacement rotary vane flow meter outline and installation dimension as figure 2、3 and following table.

Note: nodular cast iron flange standard is GB12380.4-90~GB12380.7-90

Carbon steel or stainless steel flange PN2.5MPa executes standard of JB/T82.1-94;PN4.0MPa and PN6.3MPa execute standard of JB/T82.2-94.