FVF Type: Vortex Flow Meter

FVF Type: Vortex Flow Meter

  • Simplified setup and diagnostics.
  • With temperature and pressure compensation
  • 4~20mA and pulse output multi output optional.
  • Various sizes are available.
  • Temperature range up to 420oC
  • Scratchpad with memory function for setup and calibration.
  • Wifi function supports SMM cloud sensor software

Description

  • Simplified setup and diagnostics.
  • With temperature and pressure compensation
  • 4~20mA and pulse output multi output optional.
  • Various sizes are available.
  • Temperature range up to 420oC
  • Scratchpad with memory function for setup and calibration.
  • Wifi function supports SMM cloud sensor software

What is a vortex flowmeter

The composition of the vortex flowmeter[edit]

A vortex flowmeter, comprising: a flow sensor operable to sense pressure changes due to vortex shedding of fluid in a channel and convert the pressure changes into flow sensor signals in the form of electrical signals; and a signal processor , which is used to receive the flow sensor signal and generate an output signal corresponding to the change in pressure due to vortex shedding of the fluid in the channel.[2]

working principle[edit]

When the medium flows through the Braff body at a certain speed, alternately arranged vortex bands are generated behind the sides of the Braff body, called "von Kalman vortices". Since eddy currents are alternately generated on both sides of the vortex generator, pressure pulsations are created on both sides of the generator, which can cause alternating stress to the detector. The piezoelectric element encapsulated in the detection probe body generates an alternating charge signal with the same frequency as the vortex under the action of alternating stress. The frequency of these pulses is proportional to the flow rate. After the signal is amplified by the preamplifier, it is sent to the intelligent flow accumulator for processing

In a certain range of Reynolds number (2×10^4~7×10^6), the relationship between the vortex release frequency, fluid velocity and the width of the vortex generator facing the flow surface can be expressed by the following formula:[3]

              f=St×V/d   

where f is the release frequency of the Karman vortex, St is the Strouhal number, V is the velocity, and d is the width of the triangular cylinder.[4]

The application of vortex flowmeter

1. Smart pipeline monitoring application

The main reason for the popularity of flow meters in industrial applications is the way they are designed and manufactured. They have no moving parts, have virtually no obstruction to a straight flow path, require no temperature or pressure correction, and maintain accuracy over a wide flow range. Straight pipe runs can be reduced by the use of double-plate flow conditioning elements, and installation is very simple and does not cause pipe intrusion

However, in many applications the thermal properties of the fluid may depend on the fluid composition. In such applications, changes in fluid composition during actual operation can affect flow measurements. Therefore, it is important for flow meter suppliers to understand the composition of the fluid so that the appropriate calibration factors can be used to accurately determine flow. Vendors can provide appropriate calibration information for other gas mixtures, but the accuracy of the flowmeter depends on the actual gas mixture being the same as the one used for calibration purposes. In other words, the accuracy of a flowmeter calibrated for a given gas mixture will decrease if the gas actually flowing has a different composition[2]

2. CVD equipment

What is CVD equipment

Vapor deposition (CVD) is a vacuum deposition method used to produce high-quality, high-performance solid materials. This process is commonly used in the semiconductor industry to produce thin films

In typical CVD, the wafer (substrate) is exposed to one or more volatile precursors that react and/or decompose on the surface of the substrate to produce the desired deposit. Often volatile by-products are also produced, which are removed by the gas flow through the reaction chamber

Microfabrication processes widely use CVD to deposit various forms of materials including: single crystal, polycrystalline, amorphous and epitaxy. These materials include: silicon (carbon dioxide, carbides, nitrides, oxynitrides), carbon (fibers, nanofibers, nanotubes, diamond and graphene), fluorocarbons, filaments, tungsten, titanium nitride and various high k dielectric

 

3. Gas distribution board/operation board (VMB/VMP)

What is VMB/VMP

Through our experience in handling gases, we have gained the knowledge to design and manufacture panels (gas boxes) for EPI systems, MOCVD, material supply systems and more.
Among our business achievements, we are able to design and manufacture products that meet customer requirements (price and specifications). We can handle not only normal gas but also liquefied gas supply for hub rings. We also support various legal applications.

Additional information

application

flow

Types of

electronic

Installation method

Flange, Mouth, Pinch, Insert

output method

digital, analog, wireless

Technical Specifications

model FVF-F FVF-W FVF-I
Dimensions (mm/Inch) DN15(1/2″)~DN600(22″) DN300(12″)~DN1000(26″)
Connection method Flange Wafer type plug-in
Flow range Steam: 1.6~540,000 Kg/Hr
Gas: 3~46,000 M3/Hr
Liquid: 0.3~4950 M3/Hr
precision Gas & Vapor: ±1.0% of reading
Liquid: ±0.7% of reading
Reproduction accuracy ±0.2% fo reading
temperature range -40~+280℃(standard type)
-40~+420℃(Optional)
ambient temperature -20~+60℃
Pressure resistance 78 kg/cm2 (max.)
Protection level IP65
Explosion-proof grade, Exd IIC T6, Intrinsically Safe, E ex ia IIC T4
monitor 4-line LCD, 4-digit instant flow, 8-digit cumulative flow
Current output 4~20mA(2-wire)/600 Ohm
Pulse output Pulse (3-wire)/Rating: 3~30Vdc, 20 mA Max
communication method RS-485
Wifi_Cloud Zigbee Wifi supports SMM cloud sensor software
data storage Operating parameters and accumulated values are temporarily stored in EEPROM for more than 10 years
Wiring 2 X M20*1.5
Shop Pressure Sensor: Pressure Compensated
Temperature Sensor: Temperature Compensation
Supply voltage 12~24Vdc

Application field

What is Vortex flow meter

Composition of vortex flowmeter[edit]

A vortex flowmeter comprising: a flow sensor operable to sense pressure variations due to vortex-shedding of a fluid in a passage and to convert the pressure variations to a flow sensor signal, in the form of an electrical signal; and a signal processor operable to receive the flow sensor signal and to generate an output signal corresponding to the pressure variations due to vortex-shedding of the fluid in the passage.[2]

Working principle[edit]

When the medium flows through the Bluff body at a certain speed, an alternately arranged vortex belt is generated behind the sides of the Bluff body, called the “von Kármán vortex“. Since both sides of the vortex generator alternately generate the vortex, the pressure pulsation is generated on both sides of the generator, which makes the detector produce alternating stress. The piezoelectric element encapsulated in the detection probe body generates an alternating charge signal with the same frequency as the vortex, under the action of alternating stress. The frequency of these pulses is directly proportional to flow rate. The signal is sent to the intelligent flow totalizer to be processed after being amplified by the pre-amplifier.

In certain range of Reynolds number(2×10^4~7×10^6), the relationship among vortex releasing frequency, fluid velocity, and vortex generator facing flow surface width can be expressed by the following equation:[3]

              f=St×V/d   

Wherein, f is the releasing frequency of Carmen vortex,St is the Strouhal numberV is velocity, and d is the width of the triangular cylinder.[4]

Vortex Flow meter application

1.Smart piping monitor

The primary reason thermal mass flow meters are popular in industrial applications is the way they are designed and built. They feature no moving parts, nearly unobstructed straight through flow path, require no temperature or pressure corrections and retain accuracy over a wide range of flow rates. Straight pipe runs can be reduced by using dual-plate flow conditioning elements and installation is very simple with minimal pipe intrusions.

However, in many applications, the thermal properties of the fluid can be dependent upon fluid composition. In such applications, varying composition of the fluid during actual operation can affect the thermal flow measurement. Therefore, it is important for the thermal flow meter supplier to know the composition of the fluid so that the proper calibration factor can be used to determine the flow rate accurately. Suppliers can provide appropriate calibration information for other gas mixtures, however the accuracy of the thermal flow meter is dependent on the actual gas mixture being the same as the gas mixture used for calibration purposes. In other words, the accuracy of a thermal flow meter calibrated for a given gas mixture will be degraded if the actual flowing gas has a different composition.[2]

2. CVD machine

What is CVD

chemical vapor deposition (CVD) is a vacuum deposition method used to produce high quality, high-performance, solid materials. The process is often used in the semiconductor industry to produce thin films.

In typical CVD, the wafer (substrate) is exposed to one or more volatile precursors, which react and/or decompose on the substrate surface to produce the desired deposit. Frequently, volatile by-products are also produced, which are removed by gas flow through the reaction chamber.

Microfabrication processes widely use CVD to deposit materials in various forms, including: monocrystallinepolycrystallineamorphous, and epitaxial.These materials include: silicon silicon (dioxidecarbidenitrideoxynitride), carbon (fibernanofibersnanotubesdiamond and graphene), fluorocarbonsfilamentstungstentitanium nitride and various high-k dielectrics.

3.Valve manifold box/panel (VMB/VMP)

What is VMB/VMP

Through our experiences of handling gases, we have acquired the knowledge to design and manufacture gas panel (gas box) of EPI system and MOCVD, material supply system etc.
Achievements in our business, we are able to design and manufacture to meet customer's request (price and specification). We can handle the hub ring air supply of liquefied gases not just only normal gases. We also support with var-ous kind of legal application .

Flow range

size Saturated Steam-Kg/Hr
absolute pressure
P(Mpa)
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
(mm) Inch temperature
@4℃
120.2 133.5 143.62 151.84 158.94 164.96 170.41 175.36 179.68
density
(Kg/m3)
1.129 1.651 2.163 2.689 3.17 3.667 4.162 4.665 5.147
Flow range Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max.
20 3/4″ 9 80 11 102 12 130 13 160 15 190 16 220 17 250 18 279 19 309
25 1″ 14 136 17 198 19 260 21 320 23 380 25 440 27 499 28 559 30 618
40 1-1/2″ 32 400 38 498 44 649 48 801 53 951 57 1100 60 1249 64 1397 67 1544
50 2″ 52 667 64 826 73 1080 81 1335 88 1585 95 1834 100 2081 107 2328 112 2574
65 2-1/2″ 88 933 106 1320 121 1730 135 2135 147 2536 158 2934 168 3330 178 3724 187 4118
80 3″ 105 1400 127 1980 145 2596 161 3240 176 4015 189 4644 201 5270 213 5896 224 6520
100 4″ 175 2332 212 3300 242 4320 269 5400 293 6430 315 7320 336 8320 355 9310 374 10300
125 5″ 262 3500 317 4950 363 6490 404 8000 440 9510 473 11000 504 12500 533 14000 560 15440
150 6″ 350 4666 423 6600 484 8650 538 10680 586 1268 631 14670 672 16650 711 18620 747 20590
200 8″ 610 9330 740 13200 848 17300 942 21360 1026 25360 1104 29340 1176 33300 1243 37240 1308 41180
250 10″ 875 13997 1056 19810 1210 25960 1345 32030 1466 38040 1577 44000 1680 49940 1776 55860 1868 61760
300 12″ 1050 20995 1270 29720 1453 38930 1614 48040 1759 57050 1892 66000 2016 74900 2132 83800 2241 92650
size Saturated Steam-Kg/Hr
absolute pressure
P(Mpa)
1.2 1.4 1.6 1.8 2.0
(mm) Inch temperature
@4℃
187.96 195.04 201.37 207.11 212.37
density
(Kg/m3)
6.127 7.106 8.085 9.065 10.05
Flow range Min. Max. Min. Max. Min. Max. Min. Max. Min. Max.
20 3/4″ 20 368 22 426 24 485 25 544 26 603
25 1″ 33 735 35 853 37 970 39 1088 42 1206
40 1-1/2″ 73 1838 79 2132 84 2426 89 2720 94 3015
50 2″ 122 3054 132 3553 140 4043 149 4533 157 5025
65 2-1/2″ 204 4902 220 5685 234 6368 248 7252 261 8040
80 3″ 345 7760 263 9000 280 10240 298 11480 313 12730
100 4″ 408 12260 439 14200 468 16160 496 19120 522 20100
125 5″ 611 18400 658 21300 702 24260 744 27200 783 30200
150 6″ 815 24500 878 28420 936 32340 990 36260 1044 40200
200 8″ 1427 47000 1536 56850 1638 64680 1735 72520 1827 80400
250 10″ 2038 73520 2195 85270 2340 97000 2480 108780 2610 120600
300 12″ 2446 110300 2634 127900 2808 145530 2975 163200 3132 180900
size water (25℃)
M3/Hr
gas
M3/Hr
(Calibration medium: air @ 20℃ 101325Pa environment)
(mm) Inch standard Diffusion
15 1/2″ 0.3~6 0.5~8 6~40 5~50
20 3/4″ 0.6~12 0.6~12 8~50 6~60
25 1″ 1.2~16 0.8~16 10~80 8~120
32 1-1/4″ 1.6~30
40 1-1/2″ 2~40 2~40 25~200 20~300
50 2″ 3~60 2.5~60 30~300 25~500
65 2-1/2″ 5~100 4~100 50~500 40~800
80 3″ 6.5~130 6~160 80~800 60~1200
100 4″ 15~200 8~250 120~1200 100~2000
125 5″ 20~340 12~400 160~1600 150~3000
150 6″ 30~450 18~600 250~2500 200~4000
200 8″ 45~800 30~1200 400~4000 350~8000
250 10″ 65~1250 40~1600 600~6000 500~12000
300 12″ 95~2000 60~2500 1000~10000 600~16000
plug-in use
300 12″ 100~1500 1560~15600
350 14″ 140~2300 2100~21000
400 16″ 180~3000 2750~27000
450 18″ 240~3800
500 20″ 300~4500 4300~43000
600 22″ 450~6500 6100~61000
800 24″ 750~10000 11000~110000
1000 26″ 1200~1700 17000~17000

Order model

Order model
 

FVF
coding interface
F Flange Type (Standard Type)
W Wafer type
I plug-in type
 

coding Piping Size
XXXX 15~300mm (for flange type)
XXXX 15~300mm (for wafer type)
XXXX 300~1000mm (for plug-in)
 

coding material
4 SUS304 (flange & plug-in type)
1 SUS301 (for wafer type)
 

coding Connection method
1 PN10 (applicable for flange type)
2 PN16 (applicable for flange type)
3 PN25 (applicable for flange type)
4 PN40 (applicable for flange type)
A ANSI 150# (for flanged type)
B ANSI 300# (for flanged type)
C ANSI 600# (for flanged type)
J JIS10K (applicable to flange type)
K JIS20K (applicable to flange type)
L JIS40K (applicable to flange type)
N Wafer & Plug-in Types
Z other
 

coding Sensor function
1 Flow display (without temperature/pressure compensation)  
2 Flow display + temperature + pressure calculation  
3 Flow display + temperature sensor  
4 Flow display + pressure sensor  
 

coding output signal
A 4~20mA (standard type)
P pulse
R RS-485
W Wifi
 

coding Maximum temperature resistance
1 -40~280
2 -40-420 (Flange with temperature/pressure sensor)
3 -40-420 (flange + pressure sensor)
4 -40~420 (wafer type + pressure sensor)
 

coding Protection level
N IP65 (standard type)
I Intrinsically Safe, E ex ia IIC T4
X Explosion Proof,Exd IIC T6
 

coding Optional body
N without
R shrink tube
 

coding label
F FGT
N Printing custom factory
 

FVF Complete order model
*Note: All models support voltage (+12~24 Vdc)
*Note: The annual purchase order of the customized brand needs to be more than 100 sets

IoT software

SMM Cloud Sensor Software

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