![]() ![]() It is composed of a total pressure probe and a static pressure probe. The Pitot tube is named after its inventor and French engineer Henri Pitot. The most commonly used pressure anemometer is the Pitot tube. The time response is fast, the sensitivity is high, and the minimum detection wind speed can reach a few centimeters per second.ĭisadvantages: the installation is more complicated and the price is more expensive. It will be a powerful substitute for mechanical anemometers.Īdvantages: no moving parts, no mechanical wear. Because it overcomes the inherent shortcomings of mechanical anemometers, it can work normally all-weather and for a long time, and it is more and more widely used. The ultrasonic anemometer is a more advanced instrument for measuring wind speed and direction. The air velocity can be obtained by measuring this time difference, that is, the air velocity measurement can be realized by measuring this time difference, which is the working principle of the ultrasonic anemometer. Therefore, within a certain distance, there is a difference between the time required for sound waves to propagate downwind and upwind. The propagation speed of sound waves in the actual atmosphere is equal to the sum of the propagation speed of sound waves in the static atmosphere and the airflow speed in the atmosphere. Secondly, this anemometer is expensive and costly. No special software is required.ĭisadvantages: The hot-wired anemometer is easily affected by the ambient temperature, and its temperature drift is one of the most important sources of error. Its time constant is only a few hundredths of a second, and it is an important tool for atmospheric turbulence and agrometeorological measurement.Īdvantages: It is a high-speed anemometer, which can be measured even at low speeds. ![]() The anemometer has high sensitivity at low wind speeds and is suitable for measuring small wind speeds. The direct heating type is mostly platinum wire, which can directly measure its temperature while measuring the wind speed. ![]() The indirect heating type is generally manganese copper wire, its resistance temperature coefficient is close to zero, and its surface is additionally equipped with temperature measuring elements. Send us feedback.There are two types of wind speed: indirect heating and direct heating. These example sentences are selected automatically from various online news sources to reflect current usage of the word 'anemometer.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Los Angeles Times, 19 July 2019 This technology isn’t perfect-software still hiccups, anemometers still break-but El Faro’s black box has commemorated the crew in a way nothing else could.Ĭraig Fehrman, Outside Online, El Faro didn’t even have a working anemometer, a wind-speed gauge.ĭouglas Preston, New York Times, In addition to filming, Maravelias was also recording wind speeds with two anemometers.Īngela Fritz, Washington Post, 6 Mar. 2019 Each platform is fitted with an anemometer, which measures wind speed, and an alarm sounds if the speeds reach 30 mph. 2019 The Police Department also has seven wind-monitoring devices, called anemometers, to measure gusts along the route.ī, 27 Nov. Sarah Maslin Nir, New York Times, 28 Nov. 2021 Officers were checking seven wind-detection machines, known as anemometers, as the balloons proceeded down the route from West 77th Street and Central Park West to the grandstand at Herald Square. 2021 More advanced systems can have all that, plus all or a selection of these: a rain gauge, an anemometer for measuring wind speed and direction, a barometer, and an actinometer for checking UV index and solar radiation.Īdrienne Donica, Popular Mechanics, 4 Jan. Recent Examples on the Web On top of that, the instrument the man was using, an anemometer, broke.
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