Vortex Gas Flow Meter

VFM60MV MultiVariable vortex gas flow meter is an integral solution of mass flow measurement in the wet/dry air, gas measurement system. Integrated pressure and temperature transmitter for density compensation, able to measure temperature, pressure, standard flow and mass flow directly.

The advantage at a glance

  • Built-in temp & pressure compensation transmitter
  • Patent dual probe design excellent anti-vibration performance
  • Measurement limit down to 2m/s wide turndown ratio(for steam: 2~70m/s)
  • Compact design integrated temperature & pressure transmitter support high range up to 350°C


  • Compressed air, Nitrogen gas monitoring and custody transfer measurement
  • Monitoring the compressed air inlet/outlet of the compressor
  • Co2, Argon gas, oxygen
  • Gas drainage in coal mines
  • Measurement Nature gas, biogas process control, and custody transfer
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Comate bluetooth app

COMATE-Bluetooth software enables users remote access to COMATE Vortex flowmeters and Thermal Mass 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

Vortex meters are the most reliable &  accurate measurement innovation technology available & widely accepted across the industries.

Theory of vortex type flow meters according to “Karman vortex”(click here) working theory designed for steam, gas flow, liquid’s volume flow, standard volume flow or mass flow measurement.

VFM60MV Series Multivariable vortex gas flowmeters incorporate Comate start-of-art technologies. This type of multivariable vortex flowmeter combines temperature and pressure compensation measures the standard flow/mass flow of compressed air, gas directly.

By help of three built-in sensor, a vortex shedding flow velocity, a pressure transmitter, and a temperature sensor, VFM60MV can more accurately measure the mass/standard flow rate of medium though density compensation.

VFM60MV Multivariable Vortex Gas Flowmeters:

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
Standard output is pulse and 4~20 mA, Hart@4~20mA and RS485 is available

Password protecting function and self-diagnose function

VFM60MV MultiVariable Vortex Flowmeters

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


•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

Fliud to measure Liquid, steam, gas
Nominal diameter Wafer/Flanged(ANSI/DN/DIN/JIS):15mm~300mm(1/2″~12″)
Measurement range(m/s) DN15~20 DN25~32 DN40~300
Steam 6~70 m/s 4~70 m/s 2~70 m/s
Gas 6~60 m/s 4~60 m/s 2~60 m/s
Liquid 0.3~7m/s 0.3~7m/s 0.3~7m/s
Accuracy ±1% RD (insertion is 1.5%RD)
For multi-variable version: temperature ±1°C,pressure:0.75% FS
Repeatability 0.3% RD
Output Pulse / 4~20mA / 4-20mA@ HART / RS-485
Process Temperature Range -40℃~150℃ ; -40℃~250℃ ; -40℃~350℃ ;
Process Pressure Limit –0.1 MPa (–1 kg/cm2) to flange rating
Ambient Temperature Range –40 to 85°C
Ambient Humidity 5 to 100% RH
Electrical Connection 1/2 NPT, M20 × 1.5
Materials 304 SS, 316 SS, 316L SS

The Nm3/hr unit of flow range, is the standard flow under 20dgr C and 0.1Mpa, vortex flow meter range should be base on actual velocity range, than transfer to standard flow or mass flow according to the pressure and temperature in the pipe.

ex: VFM60MV-T1213N5QN-080

Mode codes  VFM60 series Digital Vortex Type Flowmeters
1 General model VFM60-N Standard vortex flowmeters (without integral RTD and pressure sensor) Standard
VFM60-MV Vortex mass flowmeter with  integral RTD and pressure sensor Option
2 Transmitter Location T Integral Standard Standard remote cable length is 5m, for longer cable, please let us know
R Remote Option
3 Process connection 0 Insertion Option Insertion for DN200~1000, wafer and flanged type for pipes smaller than 300mm
1 Flanged Standard
2 Wafer Option
3 Downsized wafer Option
4 Fluid type 1 Liquid Standard If the fluid is steam, please advise if it is saturated or superheated
2 Gas Option
3 Steam Option
5 Wetted part material 1 OCr18Ni9(304) Standard For other materials, please advise your requirement.
2 316 Option
Q Other Option
6 Pressure rating 3 1.6 Mpa Standard
4 2.5 Mpa Option
5 4 Mpa Option
6 6.3 Mpa Option
7 Medium Temperature N T≤150℃ Standard If temperature is lower than 40 dgr C, please check with us.
S T≤250℃(wafer or flanged) Option
H T≤350℃ (wafer or flanged) Option
8 Transmitter 1 pulse/4~20mA Standard The HART signal is output though 4~20mA

MV stand for multi-variable version

Option 2,4,6,8,9 require one week more for production

2 pulse/HART@4~20mA Option
3 Pulse/RS485 Option
4 pulse/ 4~20mA/RS485 Option
5 MV/pulse/4~20mA Option
6 MV/pulse/HART@4~20mA Option
7 MV/Pulse/RS485 Option
8 MV/pulse/ 4~20mA/RS485 Option
9 pulse/4~20mA/RS485/separate T&P Option
9 Blue tooth Q No Blue tooth Standard If need blue tooth, has to has RS485
B With blue tooth Option
10 Cable grinder N M20x1.5 Standard
Q Other Option
Pipe size xxx xxx This 3 digits code indicates the inner diameter of the pipe, for example, 050 means DN50,

Vortex Flow Meter Gas Measurement

Vortex flow meter Work principle is to reaching 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 manufacture faced the problems 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 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 and 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