Examples of using Anemometer in English and their translations into Vietnamese
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Colloquial
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Ecclesiastic
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Computer
TXFS-4 type anemometer.
Anemometer Wind Speed Meter.
Hot-wire and film anemometers.
Anemometer measurement area ground fire mouth base up 1.5m, the base is 305× 76× 152mm.
Contrary to rumor, the Mount Washington anemometer did not blow away during the 1934 storm.
Leon Battista Alberti,an Italian architect invented the first mechanical anemometer in 1450.
A simple type of anemometer was invented in 1845 by Dr. John Thomas Romney Robinson, of Armagh Observatory.
Though the Lind was not the first it was the most practical andbest known anemometer of this type.
The little, delicate anemometers are used in velocity profile and turbulence research and are susceptible to breakage and to contamination from dirt.
ISO flow calibration certificate for hot wire anemometers, vane anemometers and Pitot tubes;
The two most common technologies to measure velocity arecapacitive based pressure sensors and hot-wire anemometers.
The hot-wire anemometer which is used to measure the speed of air is one of the simplest form of thermal mass flow meter.
In weather stations with high wind speeds,the pitot tube is modified to create a special type of anemometer called pitot tube static anemometer.[9].
The three-cup anemometer was further modified by the Australian Dr. Derek Weston in 1991 to measure both wind direction and wind speed.
However, some circle frames mountings cause windsocks to be held open at one end,indicating a velocity of 3 knots, even though anemometers would show no wind speed.
The simplest type of anemometer is the cup anemometer, invented in 1846 by Dr. John Thomas Romney Robinson of Armagh Observatory.
Scientists at meteorologically extreme places such as Mount Washington in New Hampshire often have to break huge chunks of hard rime off weather equipment,in order to keep anemometers and other measuring instruments operating.
The Mount Washington anemometer, which had been calibrated in 1933, was recalibrated after the world record measurement, and it proved to be accurate.
Since a Doppler Lidar system can measure the distance between the lidar and particles in the air utilizing the roundtrip time of backscattered light,unlike conventional anemometers, wind direction and speed can be measured remotely.
When Robinson first designed his anemometer, he asserted that the cups moved one-third of the speed of the wind, unaffected by the cup size or arm length.
This type of anemometer is mostly used for middle-school level instruction, which most students make on their own, but a similar device was also flown on Phoenix Mars Lander.
In laser Doppler velocimetry, laser Doppler anemometers use a beam of light from a laser that is divided into two beams, with one propagated out of the anemometer.
Some anemometers are easy to take with you wherever you go, and others come as part of wireless weather stations that you can place in your backyard and read off an indoor monitor.
Unfortunately, when Dr. Robinson first designed his anemometer, he stated that no matter what the size of the cups or the length of the arms, the cups always moved with one-third of the velocity of the wind.
Another type of anemometer uses pitot tubes that take advantage of the pressure differential between an inner tube and an outer tube that is exposed to the wind to determine the dynamic pressure, which is then used to compute the wind speed.[11].
James Lind's anemometer of 1775 consisted simply of a glass U tube containing liquid, a manometer, with one end bent in a horizontal direction to face the wind and the other vertical end remains parallel to the wind flow.
The successful metal pressure tube anemometer of William Henry Dines in 1892 utilized the same pressure difference between the open mouth of a straight tube facing the wind and a ring of small holes in a vertical tube which is closed at the upper end.
The three-cup anemometer developed by the Canadian John Patterson in 1926 and subsequent cup improvements by Brevoort& Joiner of the United States in 1935 led to a cupwheel design with a nearly linear response and had an error of less than 3% up to 60 mph(97 km/h).