Variable-area flow meters

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Variable-area flow meters | Choosing the right flow meter
Variable-area flow meters are used to measure the volumetric flow rate of clean, loaded and viscous liquids as well as clean gases. However, we do not recommend using this type of technology for highly viscous liquids or highly loaded liquids. This type of flow meter must be installed vertically, as the fluid flows from the bottom to the top by pushing a shaped float. The height at which the float stabilizes corresponds with the flow rate and allows direct...
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high flow rate flow meter
high flow rate flow meter
PF3A7*H

Process temperature: 0 °C - 50 °C
Volumetric flow rate: 10 l/min - 12,000 l/min
Repeatibility: 1 %

• Digital Flow Switch for Large Flow • Applicable fluid: Air and N2 • 3-colour 2-line information display • Flow ratio: 100:1 • Repeatability: ±1.0% F.S • Applicable fluid: Air, ...

variable-area flow meter
variable-area flow meter
SITRANS F VA 250

Process temperature: -40 °C - 80 °C

The SITRANS F VA 250 variable area flowmeters (rotameter) with a standard length of 250 mm (9.84 inch) and their completely metal design can be used to measure many different types of ...

variable-area flow meter
variable-area flow meter
RAGN

Process pressure: 16, 10, 8, 6 bar
Process temperature: -25 °C - 100 °C
Volumetric flow rate: 10 m³/h - 160 m³/h

... vertical installation is required. The actual flow is indicated by the top of the float and can be directly read from the scale on the metering tube. Welcome to the FlowConfigurator: Selecting the flowmeter ...

variable-area flow meter
variable-area flow meter
RM series

Process pressure: 0 bar - 6.9 bar
Process temperature: 0 °F - 130 °F

Dwyre Instruments, Inc offers different flowmeters like Series VA PTFE PTFE/Glass, Series VA Variable Area Glass, Series VAT Variable Area Fluoropolymer, ...

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DWYER
variable-area flow meter
variable-area flow meter
H250 M40

Process temperature: -200 °C - 400 °C
Volumetric flow rate: 10 l/h - 2,800,000 l/h

... , hygienic connections, etc. The H250 M40 is the standard variable area (VA) flowmeter for the process and OEM industry. The VA meter combines mechanical flow ...

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KROHNE Messtechnik
variable-area flow meter
variable-area flow meter
H250 M8

Process pressure: 145 bar
Process temperature: -40 °C - 200 °C
Volumetric flow rate: 10 l/h - 180,000 l/h

• Mechanical or with electronic bargraph indicator (4…20 mA/HART®) • Flange: DN15…25 / 1⁄2…1"; also NPT, G, hygienic connections, etc. The H250 M8 is a variable area (VA) flowmeter ...

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KROHNE Messtechnik
variable-area flow meter
variable-area flow meter
DK 37

Process pressure: 0 bar - 220 bar
Process temperature: -40 °C - 150 °C
Volumetric flow rate: 1.6 l/h - 8,000 l/h

... electronic indicator (4…20 mA/HART®) • Sturdy metal design: stainless steel or alloy • Thread: G1⁄4, 1⁄4 NPT; others The DK37 M8 is a variable area (VA) flowmeter ...

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KROHNE Messtechnik
variable-area flow meter
variable-area flow meter
FAM3200

Process pressure: 100 bar
Process temperature: 180 °C
Volumetric flow rate: 1 l/h - 3,000 l/h

The FAM3200 is an armored purgemeter designed to meter small gas and liquid flows. This meter is especially suited for applications with cloudy, opaque or aggressive fluids in chemical ...

variable-area flow meter
variable-area flow meter
VA Master FAM540

Process pressure: 0 bar - 100 bar
Process temperature: 0 °C - 400 °C
Volumetric flow rate: 0 m³/h - 120 m³/h

... FAM540 flowmeter can be utilized for measuring the flow of liquids, steam and gases, especially when aggressive or opaque fluids are to be metered. It is ideal for the chemical, pharmaceutical and food ...

variable-area flow meter
variable-area flow meter
FGM4500 V/A Master

Process pressure: 300 psi
Process temperature: 120 °C
Volumetric flow rate: 12 us gal/h - 5,400 us gal/h

... It has also optional polycarbonate safety shield to protect the user from meter tube burst, 180° visibility of float position and a tube & float exchange without removing meter ...

variable-area flow meter
variable-area flow meter
SNS 552 series

Process pressure: 60 bar
Process temperature: 0 °C - 80 °C
Volumetric flow rate: 0.5 l/min - 5,000 l/min

... Multifunctional • Flow measurement of waterbased liquids • Temperature measurement • Pipe diameter adjustable • Teach-in functions • Manipulation detection Application The SNS 552 GAPL is a thermal ...

variable-area flow meter
variable-area flow meter
Sho-Rate™

Process pressure: 0 bar - 13.79 bar
Process temperature: 0 °C - 121 °C
Volumetric flow rate: 0.1 l/min - 10 l/min

Proven performance for low flow rates. Versatile options to match your needs. For a wide range of chemical, petrochemical, biotechnology, research and analytical applications, Sho-Rate™ Series glass tube variable ...

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Brooks Instrument
variable-area flow meter
variable-area flow meter
GT1600

Process temperature: 0 °C - 121 °C
Volumetric flow rate: 0 l/h - 4,900 l/h
Precision: 10, 5, 2, 1 %

... Series glass tube VA flow meters are a NEW family of meters with a rugged design for long-lasting performance with low and high-flow gas and liquid applications where ...

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Brooks Instrument
variable-area flow meter
variable-area flow meter
MT3750

Process pressure: 0 bar - 276 bar
Process temperature: -50 °C - 204 °C
Volumetric flow rate: 0 l/h - 100 l/h

Accurate low-flow measurement. Long-lasting performance in harsh environments. Need reliable, durable flow measurement in high-pressure, high-temperature or hazardous process settings? The MT3750 metal ...

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Brooks Instrument
variable-area flow meter
variable-area flow meter
NivuFlow

... with or without variable speed drives. The patented NIVUS Cross Correlation method enables highly accurate real time flow measurement. Measurement of local velocities at 16 gates results in a real ...

mass flow meter
mass flow meter
BGN

Process pressure: 0 bar - 16 bar
Process temperature: 0 °C - 350 °C
Volumetric flow rate: 0.5 l/h - 130,000 l/h

The fluid flows from bottom to top through the meter tube of the flowmeter. The float is lifted until an annular gap between the meter ring and the cone-shaped float ...

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KOBOLD Messring GmbH
variable-area flow meter
variable-area flow meter
DSV-1

Process pressure: 0 bar - 10 bar
Process temperature: 0 °C - 100 °C
Volumetric flow rate: 0.3 l/min - 130 l/min

... proven KOBOLD flow meters and switches model DSV are based on the principle of the well-known float-type flow meters, except for the conventional tapering measuring tube. ...

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KOBOLD Messring GmbH
variable-area flow meter
variable-area flow meter
KDF

Process pressure: 0 bar - 16 bar
Process temperature: 0 °C - 100 °C
Volumetric flow rate: 0 l/h - 100 l/h

The flowmeters and switches for very low flows model KDF-9 and KDG-9 for liquids and air operate on the suspended float principle: that is, the installation position is vertical and the ...

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KOBOLD Messring GmbH
variable-area flow meter
variable-area flow meter
TFM...V series

Process pressure: 0 bar - 10 bar
Process temperature: 0 °C - 60 °C
Volumetric flow rate: 0.5 l/min - 750 l/min

The Variable Area Flow Meters of the TFMV Series are designed for monitoring the single-stage and non-pulsating discharge of liquid or gas within a circuit. These flow ...

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ELETTROTEC s.r.l.
variable-area flow meter
variable-area flow meter
FMP...V series

Process pressure: 0 bar - 10 bar
Process temperature: 0 °C - 60 °C
Volumetric flow rate: 0.1 l/min - 170 l/min

FMP...V - Variable area flow meters (panel type) The FMPV Series is a range of area flow meters from Elettrotec. ...

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ELETTROTEC s.r.l.
variable-area flow meter
variable-area flow meter
FMP...VR series

Process pressure: 0 bar - 10 bar
Process temperature: 0 °C - 60 °C
Volumetric flow rate: 0.1 l/min - 170 l/min

FMP...VR - Variable area flow meters (panel type flow meters with regulating valve) The FMP VR Series is a range of variable ...

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ELETTROTEC s.r.l.
variable-area flow meter
variable-area flow meter
MBC series

Process pressure: 10 bar
Process temperature: -10 °C - 60 °C
Volumetric flow rate: 1 l/h - 250 l/h

Technical Data Service: gas & liquid Wetted parts material: Body- Polycarbonate (PC); O-Ring- Viton (standard); Float- SS316, POM Plastic Valve material: SS316 Connection material: SS316 Connection size: WN PT female; and female WNPT, ...

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Golden Mountain Enterprise
variable-area flow meter
variable-area flow meter
BF300E series

Process temperature: -50 °C - 200 °C
Volumetric flow rate: 4 l/h - 100,000 l/h

BF300E for high flows of gas, liquid and steam Case Material: SS316 Body wetted parts: SS316, Others on request. Indication via magnetic coupling (no sealed) Scales calibrated: in l/h, m3/h, kg/h, %, etc. Flow ...

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Golden Mountain Enterprise
variable-area flow meter
variable-area flow meter
FBC series

Process pressure: 10 bar
Process temperature: -24 °C - 54 °C
Volumetric flow rate: 0 l/h - 100 l/h

Technical Data Service: gas & liquid Wetted parts material: Body- Acrylic Plastic 0-ring- NBR (standard), Viton on request Float- SS316, Glass, POM Plastic Valve material: SS316 Connection material: SS316 Connection size: 1/8*NPT female Température ...

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Golden Mountain Enterprise
variable-area flow meter
variable-area flow meter
FS, FC series

Process pressure: 1.5 bar - 10 bar
Process temperature: -20 °C - 100 °C
Volumetric flow rate: 1.4 l/h - 500,000 l/h

Variable area flowmeters operate according to the variable area principle, where a float is suspended in upward flowing media in a tapered ...

variable-area flow meter
variable-area flow meter
F

Process pressure: 0 psi - 100 psi
Process temperature: 0 °C - 121 °C
Volumetric flow rate: 0.1 l/min - 45 l/min

... and PCTFE, the model F flow meter is excellent for high-purity applications or use with corrosive liquids. Units are available with a standard valve to monitor and control flow or without ...

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Aalborg Instruments
variable-area flow meter
variable-area flow meter
L

Process pressure: 0 psi - 100 psi
Process temperature: 0 °C - 121 °C
Volumetric flow rate: 0.1 l/min - 45.4 l/min

... cylindrical float freely moving inside a tapered flow tube comprises the flow measurement element of PTFE - PFA flow meters. The translucent PFA flow ...

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Aalborg Instruments
variable-area flow meter
variable-area flow meter
P series

Process pressure: 0 psi - 200 psi
Process temperature: 0 °F - 250 °F

... panel mounting model P single flow tube meters Designed for low flowrates, the model P flowmeter is a precision instrument embodying the inherent simplicity, versatility and economy ...

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Aalborg Instruments
variable-area flow meter
variable-area flow meter
DFM 10-1M

Process pressure: 0 bar - 10 bar
Process temperature: 0 °C - 100 °C
Volumetric flow rate: 1 l/min - 3.5 l/min

This compact unit offers direct indication of low rate in liters per min.

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AFRISO-EURO-INDEX
variable-area flow meter
variable-area flow meter
Flussimetri-FLU/P

Process pressure: 0 bar - 30 bar
Process temperature: -20 °C - 80 °C
Volumetric flow rate: 0.1 l/min - 120 l/min

Flowmeter for liquids BSP threads Custom stairs The Flowmeter FLUP have high visibility on each side and a clear reading of the scale. Thanks to the conformation of the cone, at regular increases of ...

variable-area flow meter
variable-area flow meter
EZ-View

Process pressure: 0 psi - 325 psi
Process temperature: 32 °F - 250 °F
Volumetric flow rate: 0.5 us gal/min - 100 us gal/min

EZ-View Flow Meters Hedland EZ-View® flow meters provide a lower cost alternative to standard Hedland flow meters. Made from high-impact ...

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Badger Meter
variable-area flow meter
variable-area flow meter
GR-065

Process pressure: 12 bar
Process temperature: -20 °C - 90 °C
Volumetric flow rate: 0 l/min - 43.3 l/min

... resistance to medium CharacteristicsA float moves in a transparent conical measurement tube, relative to the flow. The position of the float depends on the volume flow ...

variable-area flow meter
variable-area flow meter
UK-050

Process pressure: 6 bar
Process temperature: -20 °C - 65 °C
Volumetric flow rate: 1 l/min - 4,000 l/min

... Optionally valveCharacteristics A float moves in a transparent conical measurement tube, relative to the flow. The position of the float depends on the volume flow (weight ...

variable-area flow meter
variable-area flow meter
GK

Process pressure: 10, 15 bar
Process temperature: -20 °C - 100 °C
Volumetric flow rate: 2 l/h - 640 l/h

... scale ●Set-point indicator ●Optionally switching outputCharacteristics A float moves in a transparent conical measurement tube, relative to the flow. The position of the float ...

variable-area flow meter
variable-area flow meter
M series

Process pressure: 0 bar - 10 bar
Process temperature: 0 °C - 100 °C
Volumetric flow rate: 1.5 l/h - 60,000 l/h

... Measuring range: 1,5–60.000 l/h Inserts with damping feature for float in case of water hammer PVDF coated stainless steel guide rod for the dimensions DN50 and DN65 to stabilize the float ...

variable-area flow meter
variable-area flow meter
M123, M335, M350

Process pressure: 0 bar - 10 bar
Process temperature: 0 °C - 100 °C
Volumetric flow rate: 1.5 l/h - 60,000 l/h

... Measuring range: 1,5–60.000 l/h Inserts with damping feature for float in case of water hammer PVDF coated stainless steel guide rod for the dimensions DN50 and DN65 to stabilize the float ...

variable-area flow meter
variable-area flow meter
BGN

Process pressure: 16 bar - 40 bar
Process temperature: 0 °C - 350 °C
Volumetric flow rate: 0.5 l/h - 130,000 l/h

The BGN model is a full metal variable area flow meter and counter from Kobold. This tool is used for flow measurement of fluids, and ...

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KOBOLD INSTRUMENTATION
variable-area flow meter
variable-area flow meter
KSR/SVN

Process pressure: 0 bar - 16 bar
Process temperature: 70 °C - 100 °C
Volumetric flow rate: 0 m³/min - 0 m³/min

The Kobold KSR/SVN is a variable-area flow meter that can be used to determine low flow rates. It is constructed in a 1.4305 stainless steel framework ...

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KOBOLD INSTRUMENTATION
variable-area flow meter
variable-area flow meter
KDF/KDG

Process pressure: 0 bar - 16 bar
Process temperature: 0 °C - 100 °C
Volumetric flow rate: 0.3 l/h - 160 l/h

... position on the side of the filling piece. The apparatus is mainly created as a simple and economical measuring system. The float is a ball and the indication point is located the upper edge of the ball.

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KOBOLD INSTRUMENTATION
variable-area flow meter
variable-area flow meter
HTF

Process pressure: 6 bar - 420 bar
Process temperature: -196 °C - 450 °C
Precision: 0.2, 0.5, 1, 1.5, 2.5 %

... flow meter developed by modern digital intelligent processing technology. Application : ●Natural gas, flare gas, and other gas flow measurement ●Compressed air measurement ●Oxygen, ...

variable-area flow meter
variable-area flow meter
HTWF

Process pressure: 16, 25, 40, 63, 100 bar
Process temperature: -40 °C - 350 °C

Tri rotor flow meter is called float flowmeter measurement. The classic rotameter is composed of three units: float flow sensor part, ...

variable-area flow meter
variable-area flow meter
HTR

Process pressure: 0 bar - 200 bar
Process temperature: -30 °C - 350 °C
Volumetric flow rate: 1 l/h - 3,000,000 l/h

... 01 Suitable for flow measurement of medium with small diameter and low velocity, simple structure, low pressure loss 02 Wide flow ratio 10:1; double-line large liquid crystal display, optional on-site ...

variable-area flow meter
variable-area flow meter

Process temperature: -40 °C - 125 °C
Volumetric flow rate: 0 m³/h - 10 m³/h

... offers a new IoT flow meter development services using its time-tested technology. Our ability in metering systems innovation, together with an organized approach to technologies, empowered us to create ...

variable-area flow meter
variable-area flow meter

Process temperature: -40 °C - 125 °C
Volumetric flow rate: 0 m³/h - 100 m³/h

... develop there is a NB-IoT smart meter, IoT smart flow meter, BLE smart meter, CAN bus flow meter (J1939). Feature we offer for smart ...

variable-area flow meter
variable-area flow meter

Process temperature: 0 °C - 100 °C
Volumetric flow rate: 0 m³/h - 4 m³/h

... signal output from a meter or to be customized for integration inside a meter. NB-IoT Smart Water Meter solution includes a physical device and a mobile application. Mobile application ...

variable-area flow meter
variable-area flow meter

Rotor Flowmeter Suitable for measuring the flow rate of medium with small diameter and low velocity; Can be used in inflammable and explosive dangerous situations; Multi-parameter calibration function;

variable-area flow meter
variable-area flow meter

Metal Rotor Flowmeter The metal rotor flowmeter is a variable area flow measuring instrument, which has the characteristics of small size, large monitoring ...

variable-area flow meter
variable-area flow meter

Process temperature: -80 °C - 220 °C
Volumetric flow rate: 0.1 m³/h - 3,000 m³/h
Precision: 2.5, 1.5, 1 %

... and bad environment, which is measuring the flow and controlling the process to the small flow and low flow velocity, and all kinds of harsh conditions of medium. Vertical LCD Display ...

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Q&T Instruments
variable-area flow meter
variable-area flow meter
RIV500

Process pressure: 40 bar
Process temperature: -30 °C - 300 °C
Volumetric flow rate: 120,000 l/h

... principle variable area Liquid flow range from 2.5÷120.000 Lt /h Output signal 1-2 bistable contacts NAMUR; Analog 4÷20mA HART Process connection threaded or flanged ½" up to 4" Temperature ...

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Riels Instruments
variable-area flow meter
variable-area flow meter
RIV220

Process pressure: 10 bar
Process temperature: 70 °C
Volumetric flow rate: 12,000 l/h

Measuring principle Variable area Flow range for liquids up to 12,000 l/h Flow range for gaseous fluids up to 100 Nm ³/h Process connection square,axial; threaded ...

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Riels Instruments
variable-area flow meter
variable-area flow meter
RIV210

Process pressure: 10 bar
Process temperature: 70 °C
Volumetric flow rate: 2,000 l/h

Measuring principle Variable area Flow range for liquids up to 2,000 l/h Flow range for gaseous up to 25 Nm³/h Process connection square threaded 3/8" or 1/2" Gas Temperature ...

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Riels Instruments
How to choose this product
variable-area-flow-meter

A variable area flow meter measures fluid flow rate in a closed tube.

Applications

The simple structure of these devices make them common in numerous branches of industry. They are found in laboratories, as well as in water treatment plants and in chemical industry facilities.

Technologies

Such instruments consist of a tapered tube containing a float. The fluid rises in the tube, lifting the float, whose level depends on the mass flow. The flow rate is read directly on a scale suitable for the fluid in question.

How to choose

Choice will depend on the fluid to be measured, since each meter is calibrated for a particular fluid. Tube diameter, connectors and required accuracy also should be taken into account.