Anemometers and Flowmeters
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)
Buerkle™ Flow Meter PP
Compact electronic flow counter for electrical barrel and container pumps. For thin fluid media
Bel-Art™ SP Scienceware™ Riteflow™ Mounted Flowmeters
For corrosive and noncorrosive liquids and gases
Masterflex™ G2 Heavy-Duty Turbine Flowmeter/Totalizer
Designed to handle most basic industrial flow metering applications. Cole-Parmer™ G2 Heavy-Duty Turbine Flowmeter/Totalizer features two totalizers allow for process or period-specific volume monitoring. Sanitary units are perfect for micro-brewing and wine making processes.
Aalborg™ GFM Mass Flowmeter
Designed to read flow rates of gases in a low cost and convenient manner. Aalborg™ GFM Mass Flowmeter has rugged design coupled with instrumentation grade accuracy to provide versatile and economical means of flow measurement.
Aalborg™ Digital Mass Flowmeter
Use a local four button teypad and LCD to access all features of the flow meter. Aalborg™ Digital Mass Flowmeter supports automatic sensor zero offset adjustments.
Aalborg™ Model L Flowmeter
Incorporating the principles of traditional rotameter flow technology, these rugged PTFE-PFA flow meters offer solutions to low to medium flow range measurements of highly corrosive or ultra-pure liquids. Aalborg™ Model L Flowmeter offer solutions to low to medium flow range measurements.
Thermo Scientific™ GFM Pro Gas Flowmeter
Measure and monitor the flow of all types of gases quickly and efficiently with the Thermo Scientific™ GFM Pro Gas Flowmeter.
Aalborg™ GFM Analog Mass Flowmeter
Designed to read flow rates of gases in a low cost and convenient manner. Aalborg™ GFM Analog Mass Flowmeter has rugged design coupled with instrumentation grade accuracy to provide versatile and economical means of flow measurement.
Aalborg™ Aluminum Digital Mass Flowmeter
Use a local four button teypad and LCD to access all features of the flow meter. Aalborg™ Aluminum Digital Mass Flowmeter supports automatic sensor zero offset adjustments.
Aalborg™ Stainless Steel Flowmeter Glass Tube
Designed for low flowrates, the model P flowmeter is a precision instrument embodying the inherent simplicity, versatility and economy of the classical variable area meter. Aalborg™ Stainless Steel Flowmeter Glass Tube is particularly suitable for metering carrier gases in chromatography.
Aalborg™ Analog Thermal Mass Flowmeter for Oxygen
Designed to read flow rates of gases in a low cost and convenient manner. Aalborg™ Analog Thermal Mass Flowmeter for Oxygen has rugged design coupled with instrumentation grade accuracy to provide versatile and economical means of flow measurement.
Masterflex™ Differential Pressure Flowmeters
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Masterflex™ Mass Flowmeter
Economical, highly accurate, and rapid flowmeter with a miniature coil design. Cole-Parmer™ Mass Flowmeter provides precise and repeatable measurements.