Multivariable VFM60MV –
Vortex Gas Flow Meter
The VFM60MV multivariable vortex gas flow meter is a key component of the mass flow measurement system for air and gas. The ability to immediately assess temperature, pressure, standard flow, and standard flow due to integrated pressure and temperature correction.
The advantage at a glance
- Built-in temp & pressure compensation
- 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
By means of COMATE-Bluetooth software can connect to COMATE Vortex flowmeters and Thermal Mass flowmeters remotely. Users only need to use their smartphone, tablet, or any other Bluetooth-enabled device to read and change the flowmeter’s settings.
Vortex meters are the most reliable & accurate measurement technology available and most widely acknowledged measurement 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.
Features of 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
Application
- 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
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 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 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