Flow meter

The standard orifice plate is a product with simple structure, convenient installation and the strongest adaptability among the throttling devices. Its design, manufacture and use conform to the requirements of the international standard ISO5167 or GB/T2624.

Main features of standard orifice flowmeter:

◆The structure is simple, firm and easy to install.

◆It can measure the flow of various gases, steam and liquids, and has a wide range of applications.

◆No real flow calibration is required, and the accuracy is moderate.

◆The accessories are complete, which can be designed and calculated for the user.

◆It can be equipped with intelligent differential pressure transmitter to realize temperature, pressure compensation or field bus communication.

Main technical parameters of standard orifice flowmeter:

◆Pressure method: Angle connection (annular chamber or separate drilling), flange pressure, diameter distance pressure.

◆Nominal pressure: ≤42MPa (when ≥20MPa, use high pressure lens orifice plate or full welding type)

◆Nominal diameter: 50-2000mm (standard orifice plate) or <15mm (overall orifice plate); >2000mm (flat orifice plate)

◆Accuracy (uncertainty): ±1%

◆Scope of application:

Opening diameter d ( mm ): d ≥12.5 (standard orifice plate)

Aperture diameter ratio β: 0.1≤β≤0.75

Reynolds number range ReD: 0.1≤β≤0.75

107 ≥ReD ≥5000 and ReD≥170β2 D; D is expressed in mm

The main types of orifice flowmeters:

1) Standard orifice flowmeter

2) Restriction orifice flowmeter

3) Annular orifice flowmeter

4) Integrated (orifice plate, annular orifice plate, nozzle) flowmeter

5) Balance flow meter

6) Eccentric orifice flowmeter

7) Round orifice plate flowmeter