1. 風速・流速、流量の計測技術
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  3. Vane Wheel FA
Vane Wheel FA

Vane wheel anemometer FA – for measuring the flow rate of gases and liquids

Vane Wheel FA

Vane Wheel FA

Measure flow and flow velocities of gas and liquids with highest precision. Höntzsch vane wheel anemometers FA have been the reliable choice for exact flow measurement for decaes - even in challenging environments.

Whether in industry, research or environmental technology: our sensors connect robust construction with precise measuring technology.

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What is a vane wheel anemometer?

A vane wheel anemometer is a flow measuring device based on a rotating vane wheel. When fluid (gas or liquid) flows past the measuring probe it sets the vane wheel in motion. The roational speed determines the flow velocity.

The Höntzsch vane wheel FA offers a specifically high measurement quality. They precisely measure even very low, bidirectional flow velocities, making them suitable for numerous applications.

How does flow measurement using a vane wheel anemometer work?

The principle of measurement is based on the vane wheel rotating proportionally to the flow velocity of the fluid in which the sensor is inserted. The rotational speed is virtually independent of the medium’s  density, pressure and temperature. The rotational speed is virtually independent of the medium's density, pressure and temperature. Vane wheel sensors deliver precise results in gases and liquids.The vane wheel's rotational speed is detected by proximity switch, with no braking effect on the vane wheel. Contamination has no impact on impulse recognition. Installation of another proximity switch allows tracking bidirectional flow and +/- direction of flow. Thanks to its low weight the rotational speed of the vane wheel adapts to any increase in velocity within milliseconds in gases and liquids. This ensures highly precise measurement even during quick changes in flow. 

In which media can a vane wheel flow measuring sensor be used?

Höntzsch vane wheel sensors offer a wide range of applications. Whether in gaseous or liquid media, under high pressure or very high temperatures, vane wheel anemometers reliably provide measurement data.

Flow measuring sensor for air and gas

With a Höntzsch vane wheel anemometer you can measure flow velocity and flow rate of air and gases - precisely and even at very low flow velocities.

The vane wheel respods to any change in flow within milliseconds, ensuring that even dynamic processes are captured in detail.

Flow measuring sensor for water and liquids

Even in liquids like water or non-conductive liquids our vane wheel anemometers deliver impressive measurement accuracy. They respond sensitively to changes in flow and work reliably - even in high temperatures or in chemically demanding media.


This kind of precision makes them ideal for applications where constant flow rates, exact consumption values or continuous process monitoring are important.

Thanks to high quality materials and precise bearing of the vane wheel, the sensors work reliably in high temperatures, high humidity or in dusty environments.

In which industries are vane wheel anemometers FA used?

Application examples of Höntzsch flow sensors:

 

  • Flow velocities of exhaust gases, explosive process gases (Ex/ATEX)
  • Measurement and monitoring of laminar flow in pharmaceutical applications, sterilizing tunnels and clean room technology
  • Safety-relevant measurements in blowouts, gas vent stacks and flares in natural gas supply
  • Measurements of unknown gas compositions and gas density
  • Aerodynamic inspections in the automotive industry and aviation
  • Measuring and monitoring of air conditioning and ventilating systems
  • Measurements in liquid nitrogen, such as cryogenic grinding
  • Portable measurements in oil quenching basins in hardening plants
  • Measurements in demineralized, deionized water (DI water) 
  • Road-Tests or wind tunnel tests
  • Backflow and Hotspots in automotive radiators and ventilation systems
  • Aviation and aerospace
  • Flow measurements in all industrial fields and in local economy
  • Thanks to their versatility, they serve as both a precise air flow meter and a reliable flow meter for liquids

What designs of vane wheel anemometers are available?

Höntzsch offers a wide variety of designs to meet specific requirements:

 

  • Insertion probes with a minimum probe diameter of 16 mm 
  • Measuring tubes with a minimum internal diameter of 9.7 mm 
  • Combined flow and temperature sensors 
  • +/- Flow direction detection 

Key facts of flow measurement with Höntzsch vane wheel sensors

  • for use in air/gas and water/liquids
  • in air/gases measuring ranges from 0.15 up to 150 m/s
  • for use in operating temperatures up to +550 °C
  • resistant to aggressive media
  • low pressure loss
  • +/- flow direction detection
  • Profibus/HART-interface
  • for use in hazardous areas (ATEX/CSA)