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Variable Area Flowmeters


Swirl Flowmeter

Ammonia measurement

Metal cone variable area flowmeter VA Master FAM540

The VA Master 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 and beverage industries.

The flowmeters are indispensable where high pressure and / or high temperature operating conditions exist. The stainless steel primaries as well as the PTFE liner primaries are proven in many applications even under hardest conditions.

  • Primary instrument designs
    • Type FAM541: Standard-line with flange connections
    • Type FAM544: Hygienic design
    • Type FAM545: With PTFE-liner for aggressive fluids (in Classic phase, please contact ABB for information about product availablity)
  • Easily adjustable for new operating conditions
  • Magnetic stick operation
    • Configurations also possible with closed housing

All devices are available as analog indicator with or without alarms as well as electronic transmitter with 4 to 20 mA, HART communication and NAMUR contact outputs and optionally with a graphical display. They can be used in all hazardous areas.


Swirl Flowmeter

Ammonia measurement

Armored variable area purgemeter FAM3200

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 and pharmaceutical industries, gas analyzers, process systems, well systems and wherever glass metering tubes cannot be used for safety reasons.

The solution for the following application areas:

  • Water purification
  • Gas sampling systems, nitrogen generators
  • Burner control
  • Chemical injection
  • Food and beverage applications

Swirl Flowmeter

Ammonia measurement

Glass tube variable area flowmeter FGM1190

The wide variety of float weights and meter tubes allows the glass tube flowmeter FGM1190 to be matched exactly to the required flow range. The three ribs, parallel to the center axis of the meter tube, guide the float over the entire flow range. This enables a high degree of reproducibility because the float is absolutely centered in the meter tube.

Designed for flowrate measurements in many industries including system manufacture, food, water treatment plants and chemical. Aggressive fluid applications are possible because the fluid wetted parts can be made from a wide variety of different materials.

  • Design type FGM1190-87
    • With threaded pipe connection in accordance with DIN 2950.
  • Design type FGM1190-97
    • With vertical internal thread connection or threaded connector in accordance with DIN 11851, DIN 405 part1 for the food and beverage industry.
  • Design type FGM1190-98
    • With flange connection in accordance with DIN and ASME.
  • Easy range change and cleaning-no removal from the line required.
  • Excellent visibility of flow rate over a linear scale.

Swirl Flowmeter

Ammonia measurement

Glass tube variable area flowmeter FGM4500 V/A Master

The V/A Master meter is a glass tube variable area flowmeter providing visual indication of flow rate over a 12-1/2 to 1 range on a linear scale. Meter seals are either O-ring or packing gland to suit the application. The glass tube can easily be removed for range change or for cleaning. Meters are available with optional one or two bi-stable alarms systems.

Designed for flowrate measurements in many industries including system manufacture, food, water treatment plants and chemical. Aggressive fluid applications are possible because the fluid wetted parts can be made from a variety of metals and

  • Design type FGM4500 (10A4500) - O-Ring Seals Design
    • With Horizontal/vertical threaded or flanged connections
  • Design type FGM4650(10A4650) - Packing Gland Design
    • Flanged connections
    • With Horizontal/vertical threaded or flanged connections
  • Easy range change and cleaning-no removal from the line required.
  • Excellent wide angle visibility of flow rate over a linear scale.

Swirl Flowmeter

Ammonia measurement

Glass tube variable area flowmeter Purgemaster FGM6100

Purgemaster FGM6100 flowmeters are low capacity variable area flowmeters for both liquid and gas with an excellent selection of material and scale lengths in a single product family design. They feature a corrosion resistant, high strength stainless steel body, quick, easy snap-in tube construction and a safety tested operator protection shield.

Purgemasters are ideal for applications such as the purging of control lines and instrument enclosures. Their use is easily extended into fluid sampling, liquid specific gravity, level measurement and similar services.


Swirl Flowmeter

Ammonia measurement

Glass tube variable area flowmeter RatoSight FGM2235

The Series FGM2235 (10A2235) Ratosight Flow Rate Indicator is a rugged, low cost, glass tube variable area flowmeter that provides stable and reliable operation while measuring liquid or gas flow rates. The meter can be supplied with the Ratolarm extension for alarm actuation.

The Ratosight variable area flowmeter is the best available low flow solution for alakali fluids such as sea water. It is well suited for marine applications, RO systems, and forced pump lubrication and cooling as well as seal water systems.


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