wafer type vortex flow meter
sandwich vortex flowmeter
sandwich vortex flowmeter
sandwich vortex flowmeter

Wafer Type Vortex Flow Meter for Steam Mixed Gas and Liquid

  • The detection element does not contact the fluid, high reliability, strong medium adaptability
  • No moving parts, wear resistance, strong structure, simple
  • With good seismic performance
  • Wide allowable operating temperature range, -40℃~+350℃
  • Wide measuring range, high accuracy
  • Pulse signal output or two-wire 4 ~ 20mA current signal output
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Vortex flow meter is one of the mainstream flow measurement products, widely used in petroleum, chemical industry, metallurgy, heating and other departments to test and measure the flow of liquid, gas and steam.

A triangular column type vortex generator is set in the fluid to alternately generate regular vortices from both sides of the vortex generator. Such vortices are called Karman vortices, as shown in picture below . The rows of vortices are asymmetrically arranged in the downstream of the vortex generator. Suppose the frequency of the vortex is f, the average velocity of the measured medium is V, the width of the vortex generating body is d, and the diameter of the surface body is D, then the relation can be obtained：

vortex flow meter
Vortex Steam Flow Meter

 

                     

                       

Features

  • High temperature sensor standing up to 350°C
  • Best choice for trade settlement
  • Low pressure loss, high reliability, less maintenance
  • Integral forging, anti-rust, long service life.
  • Body Material SS304,Optional ss316
  • Temperature and pressure compensation

Specification

 

Measuring medium

 

 Liquid, gas, steam (single-phase media or can be considered to be single-phase media)
Saturated steam can be considered as a single-phase medium when the dryness is ≥ 85%
Medium temperature -40 ～ ＋ 250℃; 40 ～ ＋ 350℃ (high temperature type)
Medium pressure 1.6MPa   2.5MPa   4.0MPa(Pressure above 4.0MPa, need to be customized)
accuracy ±1.0% (Flange/Wafer)
±1.5% (Insertion type)
Range ratio 1:8 ~ 1:30 (reference standard air) 1:8 ~ 1:40 (reference normal temperature water)
Flow range Liquid 0.4~7.0m/s  Gas 4.0~60.0m/s  Steam 5.0~70.0m/s
specification DN15-DN300
material 1Cr18Ni9Ti（321）
Reynolds number Normal 2×104~7×106
Drag coefficient Cd≤2.6
Allowable vibration acceleration ≤0.2g
Class of protection IP65
Explosion-proof class (ia)   ⅡCT6
 

Environmental condition

 

 Ambient temperature -40~+55℃(non-explosion-proof place)   -20~+55℃(explosion-proof place)
Relative humidity ≤85％
Atmospheric pressure 86~106kPa
Power supply Non-explosion-proof type 12V～32V DC；

Flow range table（m³/h）

Nominal diameterDN（mm） liquid (t=20℃  ρo=1000kg／m3) Gas (t=20℃  101325Pa air)
Standard range Measurable flow range Standard range Measurable flow range
20 1-8 0.6-12 5-50 5-60
25 1.5-12 0.8-16 8-80 8-120
40 2.5-30 1.5-40 20-200 18-300
50 3-50 2-60 30-300 30-500
65 5-80 3-90 50-500 50-900
80 8-120 5-150 80-1000 60-1200
100 12-200 6-240 100-1000 100-2000
125 20-300 13-390 150-1600 150-3000
150 30-400 15-600 250-2500 200-4000
200 40-800 30-1200 400-4000 350-8000
250 80-120 40-1600 600-6000 500-1200
300 100-1800 50-2000 1000-10000 600-18000

 

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