Anemometers and Flowmeters
Anemometers to measure the speed of wind or a gas stream, and flowmeters to measure the flow rate of a liquid or gas; available in a variety of configurations.
Vane anemometers are mechanical velocity instruments, often described as windmills or propellers. The axis of a vane anemometer is parallel to the wind direction (horizontal). The fan speed is measured by a revolutions counter and converted to a wind speed measurement.
Digital vane thermoanemometers may be pre-calibrated, traceable to NIST, and offer a choice of measurement units (ft./min., m/s, mph, km/hr., knots, CFM, and CMM).
Hot wire anemometers use an electrically heated wire to help calculate air speed. The wire is cooled by the air flow and the known resistance of the metal is used to calculate the flow speed.
Although somewhat delicate, hot wire anemometers are used to study turbulent or rapid velocity fluctuation flows.
In the laboratory, hot-wire anemometers can be used to measure outside wind speed, air velocity, and temperature in hoods and enclosures, and slight gas movement in ductwork.
Other types of anemometers include:
- Laser Doppler anemometers
- Ultrasonic anemometers
- Acoustic resonance anemometers
- Pressure anemometers (tube and plate)
Some flowmeters measure and monitor the flow of gases. Sometimes used with gas chromatography systems, these instruments may be rated for use with flammable and explosive gases.
Common types of flowmeters with industrial applications include:
- Obstruction type (differential pressure or variable area)
- Inferential (turbine type)
- Electromagnetic
- Positive displacement
- Fluid dynamic (vortex shedding)
- Anemometer
- Ultrasonic
- Mass flowmeter (Coriolis force)
Thermo Scientific™ Flussometro del gas GFM Pro
Measure and monitor the flow of all types of gases quickly and efficiently with the Thermo Scientific™ GFM Pro Gas Flowmeter.
Fisherbrand™ Mini anemometro/termometro Traceable™
Per la misurazione della velocità del flusso d'aria in cinque valori selezionabili dall'utente: metri al secondo, piedi al secondo, miglia all'ora, chilometri all'ora e nodi. Il mini anemometro/termometro Fisher Scientific Traceable fornisce misurazioni rapidissime con due aggiornamenti delle letture al secondo.
Fisherbrand™ Anemometro/termometro digitale Traceable™
Traceable™ Digital Anemometer/Thermometer measures outside wind speed, air velocity/temperature in hoods and slight gas movement in ducts.
Buerkle™ Indicatore di flusso LiquiMobil™
Provides precise visual indication of the flow velocity of liquids or gases. ™™
Fisherbrand™ Anemometro a filo caldo/Termometro Traceable™
Per camere sterili e test ambientali
Fisherbrand™ Mini anemometro/termometro compatto Traceable™
Strumento ideale grazie alla facilità di funzionamento nelle cappe o in esterni. Anemometro utilizzabile con una sola mano, visualizza contemporaneamente la velocità dell'aria e la temperatura. L'unità è progettata per offrire anni di servizio affidabili anche per impieghi pesanti in laboratori, impianti di produzione o ambienti esterni.
Masterflex™ Mass Flowmeter
Economical, highly accurate, and rapid flowmeter with a miniature coil design. Cole-Parmer™ Mass Flowmeter provides precise and repeatable measurements.
Digi-Sense™ Precalibrated CFM/CMM Hot-Wire Thermoanemometer
High precision at very low air velocities and flow rates