VFM45 Steam Vortex Meters | Vortex Steam Mass Flowmeter Device
VFM45 provides with excellent signal processing capability and enhances the vortex street metering technology to a new level, which means it has a lower measuring limit, better stability, and accuracy. The special signal processing method has also ensured a better anti-vibration by eliminating the vibration signals.
Application:
- Saturated/superheated steam measurement and custody transfer measurement
- Steam boiler system measurements
- Measurement of other process gases
- Gas drainage in coal mines
- Measurement of liquids, especially of non-conductive liquids
Vortex Steam Mass Flowmeter
Vortex flowmeter measures down to 5m/s for gas/steam.
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 4~20mA, Hart@4~20mA and RS485 is available
Metric/British Unit selectable
Density compensation function available, do not need a flow computer for mass flow
VFM45 vortex steam flow meter transmitter has been installed over 5000 pcs, provide the most reliable and durable measurement solution

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Fluid to measure
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Liquid, steam, gas |
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Nominal diameter
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Wafer/Flanged(ANSI/DN/DIN/JIS):15mm~300mm(1/2″~12″) Insertion:300mm~700mm(12″~28″) |
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Measurement range(m/s)
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Liquid 0.5~7 steam or gas 5~70 |
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Accuracy
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±1% RD (insertion is 1.5%RD) Gas or steam:±1.0%RD |
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Repeatability
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0.3% RD (insertion is 1.5%RD) |
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Output
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4-20mA@ HART / RS-485 |
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Process Temperature Range
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-40℃~280℃ ; -40℃~350℃ ; |
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Process Pressure Limit
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–0.1 MPa (–1 kg/cm2) to flange rating |
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Ambient Temperature Range
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-40~85℃ |
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Ambient Humidity
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5~100%RH |
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Electrical Connection
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1/2 NPT, M20 × 1.5 |
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Materials
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304 SS, 316 SS, 316L SS |
| 1 | General model | VFM45-N | Vortex flowmeter without integral RTD and pressure sensor | Standard | |
| VFM45-M | Vortex mass flowmeter with integral RTD and pressure sensor | Option | |||
| 2 | Transmitter Location | T | Integral | Standard | The standard remote cable length is 10m, if you required longer cable, please let us know |
| R | Remote | Option | |||
| 3 | Process connection | 0 | Insertion | Option | Insertion for DN80~700, 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 speical requirement. Any material will cause a longer production time except 304SS |
| 2 | 316 | Option | |||
| Q | Other | Option | |||
| 6 | Pressure rating | 3 | 1.6 | Standard | |
| 4 | 2.5 | Option | |||
| 5 | 4 | Option | |||
| 6 | 6.3 | Option | |||
| 7 | 10 | Option | |||
| 8 | 16 | Option | |||
| 7 | Medium Temperature | N | T≤120℃ | Standard | If the temperature is higher than 350 degreeCor lower than 40 degree C, please advise us to check if we can do |
| S | T≤280℃ | Option | |||
| H | T≤350℃ (wafer or flanged) | Option | |||
| 8 | Transmitter | 1 | pulse/4~20mA | Standard | The HART signal is output though 4~20mA. |
| 2 | Battery power/pulse | Option | |||
| 3 | pulse/4~20mA@HART | Option | |||
| 4 | pulse/RS485 | Option | |||
| 5 | pulse/RS485 /T&P compensation | Option | |||
| 7 | pulse/4~20mA/T&P compensation | Option | |||
| 9 | Cable grinder | N | M20x1.5 | Standard | |
| D | 1/2″ NPI | Option | |||
| Q | Other | Option | |||
| Pipe size | xxx | xxx | This 3 digits code indicates the inner diameter of the pipe, for example, if he pipe is DN50, the code is 050. If the pipe is DN200, the code is 200 |

