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vortex flow meters advantages and disadvantages

  • Caliber:DN15-DN300
  • Power supply:24VDC, 3.6VDC
  • Output:4- 20 mA, pulse
  • Accuracy:±1.5%,±1.0%
  • Cable Entry :M20 X 1.5
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Introduction

Insertion vortex flow meter works based on Carmen and Strouhal relevant spiral produce and on the theory of the flow relationship. As shown in picture, In the meter body vertical insert a triangular prism root namely the happening of the body, when eddies of medium flow through the table body, in triangular prism behind the alternate produce in opposite directions regular karman swirl,its spiral separation and the flow of the medium frequency F speed by sensing head is proportional to the V detected the number of spiral,can measure the flow velocity,again according tp the table body mouth.

Application

  ♦  Liquid
  ♦ Dry gas
  ♦ Wet gas
  ♦ Wet steam
  ♦ Saturated steam
  ♦ Superheated steam


Feature:

  ♦  Flange&body: integrally forged pieces, it will avoid break down into pieces. 100% SS304 material,we can provide material report.
  ♦  Circuit Board: Digital circuit board,anti most of the supplier use analog circuit board,digital circuit board enjoy the advantages of anti-vibration and anti-interference.
  ♦  Flow converter: Distinctive modular design, amateurs can operate, disassemble and assemble easily, it will avoid accident risks.
  ♦  Welding: adopt the advanced fish scale technology,which makes the welding seam looks nice and smooth.
  ♦  Japan OVAL technology with embedded-type sensor, triangular prism will not fall off, we already apply for patent.
  ♦  Our medium temperature sensor can measure highest temperature around 350℃,normal it is -40~250℃

 

  




 
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VORTEX
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Vortex flowmeter (8)

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       Technical Performance Parameters
Measured Medium Liquid, Gas, Steam
Medium Temp -40℃~+200℃; -40℃~+280℃; 40℃~+350℃
Nominal Pressure 1.6MPa;2.5MPa;4.0MPa;6.4MPa(Other pressure can be custom,need consult supplier)
Accuracy 1.0%(Flange), 1.5%(Insertion)
Measuring range ratio

1:10(Standard air condition as reference)

1:15(Liquid)
Flow Range Liquid:0.4-7.0m/s; Gas:4.0-60.0m/s; Steam:5.0-70.0m/s
Specifications DN15-DN300(Flange), DN80-DN2000(Insertion), DN15-DN100(Thread), DN15-DN300(Wafer), DN15-DN100(Sanitary)
Material SS304(Standard), SS316(Optional)
Pressure Loss Coefficient Cd≤2.6
Vibration Acceleration Allowed ≤0.2g
IEP ATEX II 1G Ex ia IIC T5 Ga
Ambient Condition

Ambient Temp:-40℃-65℃(Non-explosion-proof site); -20℃-55℃(Explosion-proof site)

Relative Humidity:≤85%

Pressure:86kPa-106kPa
Power Supply

12-24V/DC or 3.6V battery powered
Signal Output Pulse frequency signal2-3000Hz, Low level≤1V, high level≥6V
Two-wire system 4-20 signal(isolated output), Load≤500

 

 

       Flow Range 

Size(mm) Liquid(Reference medium:normal temperature water, m³/h) Gas(Reference medium:20℃, 101325pa condition air, m³/h)
Standard Extended Standard Extended
15 0.8~6 0.5~8 6~40 5~50
20 1~8 0.5~12 8~50 6~60
25 1.5~12 0.8~16 10~80 8~120
40 2.5~30 2~40 25~200 20~300
50 3~50 2.5~60 30~300 25~500
65 5~80 4~100 50~500 40~800
80 8~120 6~160 80~800 60~1200
100 12~200 8~250 120~1200 100~2000
125 20~300 12~400 160~1600 150~3000
150 30~400 18~600 250~2500 200~4000
200 50~800 30~1200 400~4000 350~8000
250 80~1200 40~1600 600~6000 500~12000
300 100~1600 60~2500 1000~10000 600~16000
400 200~3000 120~5000 1600~16000 1000~25000
500 300~5000 200~8000 2500~25000 1600~40000
600 500~8000 300~10000 4000~40000 2500~60000

 

 

Superheated Steam Density Value (relative pressure & temperature)                 Unit: Kg/m3

Absolute Pressure (Mpa) Temperature(℃)
150 200 250 300 350 400
0.1 0.52 0.46 0.42 0.38    
0.15 0.78 0.70 0.62 0.57 0.52 0.49
0.2 1.04 0.93 0.83 0.76 0.69 0.65
0.25 1.31 1.16 1.04 0.95 0.87 0.81
0.33 1.58 1.39 1.25 1.14 1.05 0.97
0.35 1.85 1.63 1.46 1.33 1.22 1.13
0.4 2.12 1.87 1.68 1.52 1.40 1.29
0.5   2.35 2.11 1.91 1.75 1.62
0.6   2.84 2.54 2.30 2.11 1.95
0.7   3.33 2.97 2.69 2.46 2.27
0.8   3.83 3.41 3.08 2.82 2.60
1.0   4.86 4.30 3.88 3.54 3.26
1.2   5.91 5.20 4.67 4.26 3.92
1.5   7.55 6.58 5.89 5.36 4.93
2.0     8.968 7.97 7.21 6.62
2.5     11.5 10.1 9.11 8.33
3.0     14.2 12.3 11.1 10.1
3.5     17.0 14.6 13.0 11.8
4.0       17.0 15.1 13.6

 

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