Anemometer definition7/14/2023 ![]() ![]() However, they can be quickly detected by using an instrument as sensitive as the anemometer. This can be shown as a numerical readout. As wind causes the cups and shaft to turn, the speed of turning can be used to calculate wind speed. It is usually made of several small cups attached to a vertical shaft. In some cases, the flows are so small that they cannot always be identified immediately. An anemometer is an instrument that measures wind speed. The reasons for this may be structural defects or also leaky windows. Wind measurement is for instance carried out with an anemometer inside rooms when there are uncertainties about the air flows and air temperature. Measurement of the flow velocity using a thermal anemometer also enables calculation of the volume flow. Checking these flow velocities is an important factor in terms of testing whether there may possibly be a negative influence on the indoor air quality. Flow velocities develop in a ventilation duct. These instruments are for instance used to enable a function test to be performed on ventilation and air conditioning systems. Some of the instruments which you can purchase from Testo have a permanently installed probe for flow measurement. Temperatures of up to 140☌ can occur with a model that is suitable for the measurement of high temperatures and the anemometer will continue to carry out accurate measurements. This instrument has a probe head which can be employed to measure the airspeed and volume flow. The vane anemometer is very commonly used in this area. In this context, it is referred to as a thermal anemometer. The wind speed meter is now also more and more frequently used indoors. The measurement of wind speed is not just an interesting factor in the outdoors in terms of finding out more about the ambient conditions.
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