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Flow > Variable Area (VA) Flow Meters

Variable Area (VA) Flow Meters - Product Overview

Mechanical variable area flow meters (also also known as Rotameters) provide direct viewing of flow rate for basic flow measurement of liquids and gases by aligning the top of the float with the marks on the rotameter flow tube.
 
Where variable area flow meter calibration has been carried out for defined media conditions, deviations in the quoted density, pressure or temperature of gases, or in the density or viscosity of liquids, will result in measurement errors.

Advice on selecting Variable Area / Rotameter Flow Meters  >>

Rotameter Flow Meter F VA Trogflux Low Cost Rotameter / VA Meter for Transparent Liquids & Gases in Plastic Pipes

Rotameter Flow Meter F VA Trogflux - buy online
Low Cost Rotameter / VA Meter for Transparent Liquids & Gases in Plastic Pipes

General purpose plastic rotameter / VA flow meter from Mecon GmbH for non-demanding applications. The F VA Trogflux rotameter flow meter is available in standard or short tube lengths

Rotameter Flow Meter F VA Tubux Variable Area Flow Meter for Liquids & Gases and High Temperature Applications

Rotameter Flow Meter F VA Tubux
Variable Area Flow Meter for Liquids & Gases and High Temperature Applications

Rotameter / VA flow meter from Mecon GmbH that is compatible with many chemical substances and can withstand temperatures up to 150 deg C

Rotameter Flow Meter F VA Tubux M30 Variable Area Flow Meter for Liquids & Gases and High Temperature Applications

Rotameter Flow Meter F VA Tubux M30
Variable Area Flow Meter for Liquids & Gases and High Temperature Applications

Rotameter / VA flow meter from Mecon GmbH that is compatible with many chemical substances and can withstand temperatures up to 150 deg C

Rotameter Flow Meter F VA Unox Variable Area Flow Meter with Removable Glass Flow Tube for Liquids & Gases and High Temperature Applications

Rotameter Flow Meter F VA Unox
Variable Area Flow Meter with Removable Glass Flow Tube for Liquids & Gases and High Temperature Applications

Rotameter / VA flow meter with a glass flow tube from Mecon GmbH that is compatible with many chemical substances and can withstand temperatures up to 150 deg C. The F VA Unox rotameter allows installation or removal of the flow tube without removal of the fitting.

Rotameter Flow Meter F VA 250 All Metal Rotameter / Variable Area Flow Meter for Rugged Environments, High Temperatures & Pressures

Rotameter Flow Meter F VA 250
All Metal Rotameter / Variable Area Flow Meter for Rugged Environments, High Temperatures & Pressures

Metal rotameter / VA flow meter from Mecon GmbH that features a robust stainless steel design for use with aggressive fluids up to 300 deg C and 16 Bar

Rotameter Flow Meter F VA Minix Aluminium Rotameter with Built-in Needle Valve for Manual Control of Flow Rates

Rotameter Flow Meter F VA Minix
Aluminium Rotameter with Built-in Needle Valve for Manual Control of Flow Rates

Aluminium rotameter / VA flow meter from Mecon GmbH with built-in needle valve that can measure liquid flow rates up to 500 l/hr and gas flow rates up to 8000 l/hr

Rotameter Flow Meter Q flow Versatile Variable Area Flow Meter for Liquids or Gases at Low Flow Rates

Rotameter Flow Meter Q flow
Versatile Variable Area Flow Meter for Liquids or Gases at Low Flow Rates

Q flow is a modern range of variable area flow meters from Voegtlin Instruments for gases or liquids, particularly at low flow rates. The Q flow rotameter range includes a choice of tube lengths, materials and connections for versatile application.

Rotameter Flow Meter V 100 Laboratory Variable Area Flow Meters for Gases or Liquids at Low Flow Rates

Rotameter Flow Meter V 100
Laboratory Variable Area Flow Meters for Gases or Liquids at Low Flow Rates

V-100 is a flexible range of variable area flow meters for gases or liquids, particularly for laboratory use and at low flow rates. It includes a choice of tube lengths, materials and connections for versatile application

Micro Needle Valve M flow High Precision Needle Valves for Fine Dosages

Micro Needle Valve M flow
High Precision Needle Valves for Fine Dosages

The M-flow is an integrated constituent of Q-flow and V-100 float rotameters that is often used as separate valve units for OEM applications. M-flow micro valves were developed for fine dosages of gases and liquids.

Parameter Comparison Table enlarge table

  Acceptable fluid Flow rate range (m³/hr) Output Accuracy (%) Sensor body Operating temperature (°C) Max operating pressure (bar)
Rotameter Flow Meter F VA Trogflux Liquid, gas Liquid: 0.0125 – 25
Gas: 2 - 430
No 2.5 or better Plastic 60 (50 water) 10
Rotameter Flow Meter F VA Tubux Liquid, gas Liquid: 0.001 – 25
Gas: 0.016 - 400
No 1.6 or better Metal or plastic 150 up to 10
Rotameter Flow Meter F VA Tubux M30 Liquid, gas Liquid: 0.001 – 10
Gas: 0.032 - 180
No 1.6 or better Metal or plastic 150 up to 10
Rotameter Flow Meter F VA Unox Liquid, gas Liquid: 0.001 – 25
Gas: 0.016 - 400
No 1.6 or better Steel/stainless steel 150 up to 10
Rotameter Flow Meter F VA 250 Liquid, gas Liquid: 0.016 – 100
Gas: 0.5 - 630
0 – 20 mA 1.6 or better Stainless steel 300 40
Rotameter Flow Meter F VA Minix Liquid, gas Liquid: 0.0001 – 0.500
Gas: 0.002 – 8.0
No 2.5 or better Aluminium & brass/stainless steel 70 10
Rotameter Flow Meter Q flow Liquid, gas Liquid: 0.00025 – 0.07
Gas: 0.00012 – 1.2
No 2, 4 or 5 Aluminium or stainless steel 100 max 16 or 20
Rotameter Flow Meter V 100 Liquid, gas Liquid: 0.00025 – 0.07
Gas: 0.00012 – 1.2
No 2, 4 or 5 Aluminium or stainless steel 100 max 16 or 20
Micro Needle Valve M flow none none none none none none none

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