Variable Area Flowmeters

Variable Area Flowmeters

Variable area flowmeters consist of a tapered tube and a float. It measures the flow rate by detecting the position of the float, which remains stationary based on changes in the cross-sectional area through which the fluid passes as the flow rate increases or decreases.

We offer a wide lineup of variable area flowmeters, including metal tube types for general processes, small flow types, glass tube models, and resin models.
Selectable the most suitable flowmeter for your application, eg. local indication types without external power source, types with various alarm/signal outputs, explosion-proof certified products, special metal materials and lining types.

Metal tube Variable Area Flowmeters

Face-to-face 250mm model

Standard Metal tube variable area flow meters with flow direction from bottom to top. A general-purpose flow meter with a wide lineup of various alarms, signal output, explosion-proof, etc.

Multi-functional model

General-purpose Metal Tube Type Variable Area Flowmeter with a wide lineup of various alarms, signal output, explosion-proof, etc.
There are various specifications as options, and the suitable specifications for the process can be selected. Also available for high temperature/high pressure types and special material versions.

Sanitary model

AM7000 type variable area flowmeter designed for sanitary application.
All wetted parts are mechanically polished, and electrolytically polished products can be selected as an option. The connection can be easily attached to and detached from the pipe with the ISO ferrule clamp. It also has excellent detergency.

Metal tube Variable Area Flowmeters for small flow measureme

Current output model

Among the metal tube variable area flowmeters, the AM3000 is a product specialized for measuring small flow rates.
Selectable transmitter with current output or with HART® communication.
Explosion-proof Ex-d and intrinsically safe Ex-i specifications can also be selected.

Local indication / alarm output / pneumatic signal model

Among the metal tube variable area flowmeters, M-900 is a product specialized for measuring small flow rates.

Micro flow measurement model

It is a flow meter specializing in the measurement of a micro flow range among the belonging metal tube variable area flowmeter. It covers a micro flow rate that cannot be measured with AM3000 or M-900.

Micro flow measurement model with digital display and current output

It is a metal tube variable area flowmeter for micro flow measurement with LCD and current output. Explosion-proof Ex-d can be selected as an option.

Glass tube Variable Area Flowmeters

Water flow measurement model

General-purpose glass tube variable area flow meter with a standard scale for water.
Suitable for water and water equivalent flow measurement.

Standard model

vGeneral-purpose glass tube variable area flowmeter.
Large flow rate can be measured in the glass tube variable area flowmeter.

Small flow rate, high resolution scale model

General-purpose glass tube variable area flowmeter for small flow rate.

Small flow rate, high resolution scale model with alarm output

General-purpose glass tube variable area flowmeter for small flow rate with alarm output. Alarm output by reed switch or photoelectric switch is possible.

Sanitary model

Sanitary model of R-100.
The wetted parts are glass or all buffed, and electrolytically polished products can be selected as an option. The connection can be easily attached to and detached from the piping with the ISO ferrule clamp. It is also excellent in detergency.

Resin Variable Area Flowmeters

PVC, acrylic resin model

General purpose resin variable area flowmeter for liquid application.
Easy to use with a diameter of 15 to 50A.
With an alarm output can be selected as an option.

Fluororesin model

Higher grade model of AC type.
Made of all-fluororesin, suitable for measuring corrosive liquids and chemicals. With an alarm output can be selected as an option.

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