Anemometers - Import export

Particle size measurements are important in various applied sciences and in engineering, for example in fuel burning or in cavitation research as well as in particle size control. In all these applications it necessary to have knowledge about the particle dynamics. To gain that knowledge one has to measure the particle size and its velocity if possible in a noninvasive way with high local and temporal resolutions. A device which makes such measurements possible is the so called PhaseDopplerAnemometer (PDA), which has several advantages. First, it exhibits a large dynamic range from micrometer particles up to sizes in the millimetre range. Then it is very precise and no calibration procedure is necessary. Moreover, it is very robust against optical distortions. In the following the working principle of this flow and particle measurement technique will be explained.

Wind speed measurement sensors The device measures wind speed and direction and is powered by its integrated solar panel. It also has a rechargeable lithium battery.

With this anemometer ANE8903 you can measure both the wind speed and the ambient temperature.

With this anemometer ANE8903 you can measure both the wind speed and the ambient temperature.

Full range of accredited anemometer calibration services from 0.05 to 80 m/s for pitot probes, thermal anemometers, ultrasonic anemometers, vane anemometers, rotating cup anemometers. Uncertainty CMC from 0.15% of reading.

Wind velocity indicators are used for detecting and in connection with the appropriate indicator, monitoring a maximum wind velocity. They are used mainly in safety and monitoring systems of cranes and excavators. Two models are available. One with pendulum orientation, especially suited for the attachment on jibs of mobile cranes, and a common one, pedestal mounted or mounted on a vertical post. The output signal, being proportional to the wind velocity is taken either from a built-in tachometer generator in form of a voltage or from an optoelectronic impulse transmitter with frequency-current converter in form of a current signal in two-wire technique. For applications in the temperature range down to minus 50 °C there is optionally available for both models a mounting arrangement for a temperature controlled heating device. Cross arms feed-through sleeve and crown are splash-proof, degree of protection IP 65.

APPLICATION * Measurement of air speed, temperature, humidity at the air vents * Measurement of CO2 at the air vents * Detection of air leaks * Integrated measurement of volume flow * Direct measurement of volume flow at air vents in combination with the cone * Direct measurement of flow rate at the air nozzle in combination with a funnel ADVANTAGES * Easy handling with automatic identification of the cone * Two measurements in one step: determination of flow rate and evaluation of the inlet and exhaust air quality via CO2, T, RH * Selectable units: m/s, fpm, m3/h, CFM, °C, °F, cm2, Inch2 * Backlight LC display * Wöhler telescope handle e.g. for ceiling vents