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conical orifice flowmeter

  • Application occasions

    Measurement of entrained liquid phase in gas-liquid medium (wet saturated steam flow and dryness measurement, gas condensate, coal-bed methane and Shale gas gas-liquid two-phase flow measurement, etc.). Of course, like other throttling flowmeters, it can

  • Structural composition

    It is composed of conical orifice plate throttling components, instrument valves, pressure pipes, front and rear straight pipe sections, sensors, flow computers, etc.

  • Working principle

    When two-phase flow passes through an orifice plate, there is differential pressure noise, known as differential pressure pulsation, on both sides of the orifice plate. This noise is an inherent characteristic of two-phase flow and is closely related to t

Technical Parameter FEATURES Download relevant materials

Technical Parameter

  • Measurement range (example) ：

    liquid phase  0～50 m /d
                  Gas phase  0～100X10 Nm /d  (Gas phase mass ratio: 50-100%)
                  The specific flow range needs to be calculated and selected based on the data provided by the user. Replacing the orifice plate can achieve range adjustment.

  • Accuracy ：

    Gas phase: ± 3-5% MS
                  Liquid phase: Continuous flow ± 8-10% MS Stopper flow ± 10-15% MS
                  (Note: Plunger gas lift wells, velocity string wells, bubble row wells, horizontal wells, and intermittent wells may experience slug flow phenomenon)
                  Confidence level: 95%

Technical parameters for measuring steam flow rate and dryness

  • Measurement range (example) ：

    Flow rate 1-12t/h
                  Dryness 45-99%

  • Accuracy ：

    Wet saturated steam: flow rate ± 5-8% MS
                  Dryness ± 5-8% MS (confidence level: 95%)

General-purpose technology parameters

  • Measurement range (example) ：

    -40～85℃

  • Explosion proof level ：

    ExdⅡC T6 Gb

  • protection grade ：

    IP67

  • Pressure tapping method ：

    flange taps

  • Supply Voltage ：

    12/24V DC

  • Power ：

    ＜1.5W

  • communication interface ：

    RS485, scalable wireless communication

●  Pressure loss is 40% smaller than standard orifice plate

● Reduce the front and rear straight pipe sections by 30%;

● Minimal measurement parameters and simplest use of sensors;

● Small size;

● Self cleaning, anti wear

● There will be no accumulation of liquid upstream and downstream of the throttling element;

● Adopting composite sensors;

● Adopting full welding and spherical sealing;


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