Introductions
Standard type vortex flow meter is used in numerous branches of industry to measure the volume flow of liquids, gases and steam.
Applications in the chemicals and petrochemicals industries, for example, in power generation and heat-supply systems involve widely differing fluids: saturated steam, superheated steam, compressed air, nitrogen, liquefied gases, flue gases, carbon dioxide, fully demineralized water, solvents, Conduction Oil
, boiler feedwater, condensate, etc.
Main technical Parameters

Technical Performance Parameters | |
Measured Medium | Liquid, Gas, Steam |
Medium Temp | -40℃~+200℃;-40℃~+280℃;40℃~+350C |
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(FIange),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°C-65°C(Non-explosion-proof site);-20°C-55°C(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 |
Caliber(mm) | Inner Diameter d (mm) | Length L(mm) | Height H(mm) | Flange Outer | Central Dia of Bolts HoleD1(mm) | Bolt HoleDiameterD3 (mm) | Screw |
Diameter | Quantity n | ||||||
D2(mm) | |||||||
15 | 15 | 170 | 440 | 95 | 70 | 15 | 4 |
20 | 20 | 170 | 443 | 100 | 75 | 15 | 4 |
25 | 26 | 170 | 455 | 125 | 90 | 19 | 4 |
32 | 32 | 170 | 460 | 135 | 100 | 19 | 4 |
40 | 38 | 190 | 460 | 140 | 105 | 19 | 4 |
50 | 48 | 190 | 466 | 155 | 120 | 19 | 4 |
65 | 62 | 220 | 482 | 175 | 140 | 19 | 4 |
80 | 73 | 220 | 492 | 185 | 150 | 19 | 8 |
100 | 95 | 240 | 528 | 210 | 175 | 19 | 8 |
125 | 118 | 260 | 561 | 250 | 210 | 23 | 8 |
150 | 140 | 280 | 605 | 280 | 240 | 23 | 8 |
200 | 200 | 300 | 636 | 330 | 290 | 23 | 12 |
250 | 250 | 360 | 702 | 400 | 355 | 25 | 12 |
300 | 300 | 400 | 745 | 445 | 400 | 25 | 16 |
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 |
Features
- 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℃
Selection
WESDUN | X | X | X | X | X | X | X | X | X | X | X | |
Caliber | DN15-300mm/1/2″-12″ | |||||||||||
Measured Medium | Saturated Steam | S | ||||||||||
Superheated Steam | M | |||||||||||
Common Gas | C | |||||||||||
Liquid | L | |||||||||||
Others | O | |||||||||||
Nominal Pressure | 0.6MPa | 1 | ||||||||||
1.0MPa | 2 | |||||||||||
1.6MPa | 3 | |||||||||||
2.5MPa | 4 | |||||||||||
4.0MPa | 5 | |||||||||||
Nominal Temperature | -40℃-250℃ | 2 | ||||||||||
-40℃-350℃ | 3 | |||||||||||
Structure | Compact type | C | ||||||||||
Remote type (converter display) | R1 | |||||||||||
Remote type (flow computer remote display) | R2 | |||||||||||
Connection | Flange(DN15-300mm) | PN1D/PN1G/PN25/PN4O(DIN) | D** | |||||||||
A15:150#,A30:300#(ANSI) | A** | |||||||||||
10K/20K/30K/40K(JIS) | J** | |||||||||||
Wafer(DN15-300mm) | W | |||||||||||
Thread(DN15-100mm) | T | |||||||||||
Insertion(DN8O-2000mm) | I | |||||||||||
Body Material | SS304(standard) | 4 | ||||||||||
SS316 | 6 | |||||||||||
Compensation | Without | WO | ||||||||||
With temperature compensation | WT | |||||||||||
With pressure compensation | WP | |||||||||||
With temperature & pressure compensation | W2 | |||||||||||
Output | 4-20mA,pulse,RS485 | A | ||||||||||
4-20mA,pulse,HART (converter display only) | B | |||||||||||
Power Supply | DC24V | D | ||||||||||
3.6V Battery Powered (converter display only) | B | |||||||||||
AC220V (flow computer type only) | A | |||||||||||
Ex-Proof | Without | W | ||||||||||
With (Exia ll CT5 Ga) | E |
Installation
