Digital Vortex Flowmeter

People choose the digital vortex flowmeter for its dependability and accuracy, but it’s also a standard for steam applications because of its ease of installation and minimal maintenance costs. Other meter technologies suffer in high-pressure, high-temperature situations, but the vortex flow meter has a wide range and a minimal pressure drop, making it a popular choice among flow professionals.

Vortex Flow Meter Digital Solution by Comate

  • Comate Vortex flow meter digital solutions come in inline mode, making them easy to install in a variety of applications, including:
    – Steam from a hot tap
    – Large striations
    – Low-pressure zones
    For measuring mass flow rate of steam, gases, and liquids, our digital vortex flowmeter installation has a multivariable design that includes shedding velocity can
    with RTD temperature sensors and a solid-state pressure transducer. Because of the precision of these metres, velocity, temperature, and pressure may all be monitored at the same time.
digital vortex flowmeter

VFM60N Standard Type Digital Vortex Flowmeter

VFM60N Standard Type Digital Vortex Flow meter is a powerful flow meter utilizing our theory, which can meet the requirement of measuring the flow rate of various fluids.The unique dual-sensor design and special signal processing method has also ensured a better anti-vibration by eliminating the vibration signals to provide more reliable performance and lower measurement limit.

Advantage at a glance:

  •  1:35 super wide turndown ratio
  • Extremely high sensitivity, measurement limit to 2m/s
  • Patent dual-sensor design and optimized signal processing technology to ensure excellent anti-vibration
Request A Quick Quote

VFM60N Standard Type Digital Vortex Flowmeter:

Extremely high sensitivity, minimum flow rate down to 2m/s
1:35 super wide turndown ratio
Patent dual-sensor design and optimized signal processing technology to ensure best anti-vibration
No moving parts, very small pressure loss
Isolated design for electrical parts to eliminate interference
Wide power source adaptability to fit in different applications
2 lines LCD display
Standard output is pulse and 4~20 mA, Hart@4~20mA and RS485 is available
Metric/British Unit selectable
Density compensation function available, do not need flow computer for mass flow
Password protecting function and self-diagnose function

digital-vortex-flowmeter

Traditional vortex technologies are easily effected by vibration. In order to provide stable result, they can only cut off some useful signal mixed with vibration signal and flow signal

VFM60 vortex meter can distinguish the vibration signal from the flow signal, and eliminate the interference. So it can provide stable reading under vibration even the flow is down to 2m/s.

Measurement range of VFM60N Digita vortex flowmeter

Medium Min velocity Max velocity
Gas 6m/s for DN15, DN20 60m/s (196.9 ft/s)
(19.7 ft/s) for 0.5″ and 0.75″
4m/s, DN25、DN32
(13.1 ft/s) for 1″ and 1.25″
2m/s, DN40 ~ DN300
(6.7 ft/s) for 1.5″ ~ 1.2″
Steam 6m/s for DN15, DN20 70m/s (229.7 ft/s)
(19.7 ft/s) for 0.5″ and 0.75″
4m/s, DN25、DN32
(13.1 ft/s) for 1″ and 1.25″
2m/s, DN40 ~ DN300
(6.7 ft/s) for 1.5″ ~ 1.2″
Liquid 0.3m/s (1 ft/s) 7m/s (23 ft/s)

Specification of VFM60 series digital vortex flow meter

Process
connection
Flange DN15~DN300 or 0.5 inch to 12 inch
Wafer DN15~DN300 or 0.5 inch to 12 inch
Medium
temperature
Standard -40 ~ 150 ℃ or -40 ~ 302 ℉
Medium -40 ~ 250 ℃ or -40 ~ 482 ℉
High -40 ~ 350 ℃ or -40 ~ 662 ℉
Power
supply
4~20mA 2 wise system 13.5 ~ 42V
VFM60MV with 4~20mA (2 wire ) 15.5 ~ 42V
Modbus RTU Current Iq < 9mA 13.4 ~ 42V
Reynolds
and
accuracy
Gas/steam (m³/h) ±1%RD(Re ≥ 20000)
±2%RD(10000 < Re < 20000)
Liquid (m³/h) ±0.75%RD(Re ≥ 20000)
±2%RD(10000 < Re < 20000)
Gas/steam (m³/h) ±1.5%RD(Re ≥ 20000)
±2.5%RD(10000 < Re < 20000)
Turndown
ratio
Gas 1:30
Steam 1:35
Liquid 1:22
Repeatability Volume flow ±0.3%
Mass flow ±0.3%
Temperature ±0.05 ℃
Pressure ±0.05%FS
Upstream/Downstream requires 15 x D / 5 x D
Details please check
Viscosity allowance DN15 or 0.5 inch ≤ 4mPas
DN25 or 1 inch ≤ 5mPas
DN40~DN300 or 1.5~12 inch ≤ 7mPas
Anti-vibration (both punch and fixed freq) 0.5g
Display LCD displayer
Saturated /superheated steam measurement Support
HART
Natural gas/Biogas, ect HART(V5、V7)/ Modbus-RTU/ Pulse
Communication HART(V5、V7)/ Modbus-RTU/ Pulse
Explosive proof NEPSI Ex d II c T3 Gb
1 General model VFM60-MV Vortex mass flowmeter with  integral RTD and pressure sensor Standard
VFM60-N Vortex flowmeter without integral RTD and pressure sensor Option
2 Fluid type 1 Liquid Option
2 Gas Standard
3 Steam Option
3 Process connection IN Insertion (only for DN300~ DN1000 or 12 inch~ 40 inch ) Option
WC Wafer with carbon steel flanges up to 16 barG (232 psiG) (DN15~DN300) Standard
WF Wafer with stainless steel flanges up to 16 barG (232 psiG) (DN15~DN300) Option
D1 Flanged DIN PN16 up to 16 barG (232 psiG) (DN15~DN300) Option
D2 Flanged DIN PN25 up to 25 barG (362 psiG) (DN15~DN300) Option
D3 Flanged DIN PN40 up to 40 barG (580 psiG) (DN15~DN300) Option
D4 Flanged DIN PN63 up to 63 barG (913 psiG) (DN15~DN300) Option
C1 Flanged ANSI CL150 up to 16 barG (232 psiG) (0.5 inch~12 inch) Option
C2 Flanged ANSI CL300 up to 40 barG (580 psiG) (0.5 inch~12 inch) Option
C3 Flanged ANSI CL400 up to 63 barG (913 psiG) (0.5 inch~12 inch) Option
J1 JIS 10K up to 16 barG (232 psiG) (DN15~DN300) Option
J2 JIS 20K up to 40 barG (580 psiG) (DN15~DN300) Option
J3 JIS 30K up to 63 barG (913 psiG) (DN15~DN300) Option
4 Wetted part material 1 OCr18Ni9(304) Standard
2 316 Option
Q Other Option
5 Degreased N Wet part not degreased Standard
D Wet part degreased for Oxygen measurement Option
6 Medium Temperature N T≤150℃ Standard
S T≤250℃(wafer or flanged) Option
H T≤350℃ (wafer or flanged) Option
7 Transmitter ML1 Integral transmitter , multi-variable ,bluetooth, RS485, pulse, Standard
ML2 Integral transmitter , multi-variable ,bluetooth, pulse, 4 wire 4~20mA Option
ML3 Integral transmitter , multi-variable ,bluetooth, RS485, pulse, 4 wire 4~20mA Option
ML4 Integral transmitter , multi-variable ,bluetooth, pulse, 4 wire HART@4~20mA Option
ML5 Integral transmitter , multi-variable , pulse, 2 wire 4~20mA Option
ML6 Integral transmitter , multi-variable , pulse, 2 wire  HART@4~20mA Option
MR1 Remote transmitter (dual display) , multi-variable ,bluetooth, RS485, pulse, Option
MR2 Remote transmitter (dual display) , multi-variable ,bluetooth, RS485, pulse, 4 wire 4~20mA Option
NL1 Integral transmitter , bluetooth, RS485, pulse, Option
NL3 Integral transmitter , bluetooth, RS485, pulse, 4 wire 4~20mA Option
NL4 Integral transmitter , bluetooth, pulse, 4 wire HART@4~20mA Option
NL6 Integral transmitter ,  pulse, 2 wire  HART@4~20mA Option
NR1 Remote transmitter (dual display) , bluetooth, RS485, pulse, Option
NR2 Remote transmitter (single display) , bluetooth, pulse, 4 wire 4~20mA Option
NR3 Remote transmitter (dual display) , bluetooth, RS485, pulse, 4 wire 4~20mA Option
NR4 Remote transmitter (single display) , bluetooth, pulse, 4 wire HART@4~20mA Option
NR6 Remote transmitter (single display) ,  pulse, 2 wire  HART@4~20mA Option
8 Cable grinder M M20x1.5 Standard
N NPT 1/2 Option
9 Ex-proof N No Ex-proof Standard
1 NEPSI Ex d IIC T3 Gb Option
10 Pipe size 015 DN15 or 0.5 inch  
020 DN20 or 0.75 inch  
025 DN25 or 1 inch  
032 DN32 or 1.25 inch  
040 DN40 or 15 inch  
050 DN50 or 2 inch  
065 DN65 or 2.5 inch  
080 DN80 or 3 inch  
100 DN100 or 4 inch  
125 DN125 or 5 inch  
150 DN150 or 6 inch  
200 DN200 or 8 inch  
250 DN250 or 10 inch  
300 DN300 or 12 inch  

Vortex flow meter Work principle is to rearching the corresponding relationship between fluid vibration frequency and flow velocity. It measures the flow velocity of fluid by measuring the frequency of sensor output signal. That leaves many vortex meter manuafacturet faced the prolems of vibration, electromagnetic interference and the lower limit of measurement in the development and application of vortex type flowmeter.

Early in 2015, Comate have cooperate with USTC signal processing laboratory and put an unique design method in order to detect the real change of electric charge completely generated by fluids. After that Comate put VFM60MV in factory like compressed air, boiler steam, heating system nad owned a good feedback. The interference solved also makes Comate vortex meter able to measure down to 2m/s velocity than other brand in the marketplace.

To view Comate Multivariable Digital Vortex Type Flowmeters anti-vibration contrast test

click here

Nowadays, Comate bring you a more comfortable after-sale experience

when the plant is very far away from your office and your engineer are occupied by other business, how to solve customers complain faster and ontime? Comate offer you this remote support package service, each meter hv a”housekeeper”.

after-sale support

Comate remote support package service

FAQ’s

The von Kármán effect asserts that when flow passes by a bluff structure, a repeating pattern of swirling vortices is formed. Vortex flow metres use this principle to detect fluid velocity.

With no moving parts, a simple structure, and a low failure rate, the vortex flowmeter is a broad-spectrum flow metre that can be used for metering, measurement, and control of most steam, gas, and liquid flow for a highly unique media adaptability, high stability, and high reliability.

For most liquids, Coriolis mass flow metre digital offers the most precise results, but they are also the most expensive. They have the benefit of not requiring any prior information of the fluid being transported. Thermal mass flow metres are a less precise but nonetheless accurate way of measuring mass flow. They do, however, necessitate an understanding of the fluid’s specific heat capacity.

The Coriolis effect is used in mass digital vortex flow meters. Can be used to measure concentration and solids content in clean and dirty liquids, gases, and slurries. Suitable for situations with changing temperatures and pressures.