Vortex Steam flow meters from Comate provide accurate and consistent measurement of steam

Multivariable VFM60MV –

Vortex Steam Flow Meter

COMATE VFM60MV multivariable vortex meter are designed to measure mass flow for saturated and superheated steam without the need for an external standings. With advanced SSP signal processing and unique sensor technology, VFM60MV can provides more stable measurement results in like vibration conditions and low flow.

Vortex type steam flow meter advantages 

  • Built-in temperature & pressure compensation transmitter
  • Patent dual probe design excellent anti-vibration performance
  • Measurement limit down to 2m/s, 1:35 wide turndown ratio(external for 1:40)
  • Compact design integrated display support high range up to 350°C
  • A multi-functional vortex meter can for steam, air, gas and liquid

Application 

  • Saturated steam, superheated steam monitoring & custody transfer
  • Dry, wet compressed air inlet/outlet of the compressor monitoring
  • Gas drainage in coal mines
  • Measurement Nature gas, biogas process control, and custody transfer
  • Measurement of conductive and non-conductive liquids
bluetooth app for user configure paramters on comate flow meters though a mobile Diagnosis Visual display Operating friendly Equipment list

COMATE-Bluetooth software enables users remote access to COMATE all line flowmeters by wireless Bluetooth connection. Users can read and adjust the flowmeter’s settings simply by accessing their cell phone, tablet or any Bluetooth enabled device.Remote-diagnosis and program update support.

bluetooth app

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Direct Mass Flow Measurement for Saturated Steam/Superheated Steam

The purpose of vortex steam meter with temperature and pressure compensation is for when the volume deviates the actual flow, density compensation will correct the result well. Steam in gas status, the density varies with the changes of temperature and pressure itself. If don’t have the compensation will cause a huge error. Vortex mass flow meter is the perfect skill in steam flow measurement.

Comate VFM60MV Series Multivariable vortex steam flow meter incorporates Comate start-of-art technologies. This type of multi variable steam mass meter makes highly accurate measurements of various fluids including liquid, air, gas, saturated steam, and superheated steam. Support high temperature up to 350°C(662°F) in particular and can measure very low flow.

State-of-the-Art Vortex Flow Sensing

By help of three built-in sensors, a vortex shedding flow velocity, a pressure transmitter, and a temperature sensor, VFM60MV series vortex meter can more accurately measure the mass flow and standard flow of processing  gases and stemas though density compensation.

Simple installation on wafer and flanged connection 

wafer type vortex steam meter installation       flange type vortex steam meter installation

VFM60MV multivariable vortex steam flow meter

  • Extremely high sensitivity, minimum flow rate down to 2m/s with 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
  • One vortex flowmeters can measure mass flow, temperature, pressure, and density

VFM60MV high temperature(350°C/662°F) version

vortex flow meter for superheated steam

Bluetooth software support

This function enables users who have COMATE flow meter in site to reach and configure the parameters more easily rather than lose the case and check the manual on how to set it. Most important is COMATE R&D team will help you to do this job just get the device online and click online diagnosis, our team-member will collect the data and help you to check where the problems may come from!

•Bluetooth app on a cellphone to connect Comate flowmeters
•Home interface can review real-time readings on the meter screen
•Setting interface help to do function setting & parameter setting

Support

•select output to pulse/4~20mA/frequency,
•select 4~20mA output parameters
•select unit of time/temperature/pressure/flow rate,etc
•input range of 4~20mA/pressure/temperature, etc
•Remote diagnosis function

Measurement range of VFM60MV vortex steam flow meter

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 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 researching the corresponding relationship between fluid vibration frequency and flow velocity. It measures the flow velocity of fluid by measuring the frequency of the 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.

Comate understood Vibration then build a new equipment to measure it. Early in 2015, Comate have cooperated 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

FAQ’s

Vortex meters work by putting an impediment in the flow route (called a shedder bar) that causes alternating differential pressure vortices. These vortices force a small sensing device to oscillate at a frequency proportional to the moving fluid’s velocity.

Free vortices and forced vortices are the two forms of vortices. When water flows out of a vessel through a central hole in the base, for example, a free vortex is created. The fluid does not require any external force to rotate, and the degree of rotation is determined by the initial disturbance.

Vortex Shedding Frequency = Reference factor x Conversion factor x (Upper range value in US gallons/Time)
The device documentation lists the values of RF, CF, and URV, as well as the vortex shedding frequency in pulses per second (PPS).