Anemometer Sentence Examples
The other forms of velocity anemometer may be described as belonging to the windmill type.
Lind's anemometer, which consists simply of a U tube containing liquid with one end bent into a horizontal direction to face the wind, is perhaps the original form from which the tube class of instrument has sprung.
The great advantage of the tube anemometer lies in the fact that the exposed part can be mounted on a high pole, and requires no oiling or attention for years; and the registering part can be placed in any convenient position, no matter how far from the external part.
The Robinson anemometer, invented (1846) by Dr Thomas Romney Robinson, of Armagh Observatory, is the best-known and most generally used instrument, and belongs to the first of these.
Most weather stations measure wind speed using a spinning cup anemometer, which rotates depending on the wind.Advertisement
Mean velocity measurements were taken by using a precision constant temperature linearized hot-wire anemometer designed for low speed water flows.
The two great merits of this anemometer are its simplicity and the absence of a wind vane; on the other hand it is not well adapted to leaving a record on paper of the actual velocity at any definite instant, and hence it leaves a short but violent gust unrecorded.
Anemometer observations show that pressures of 30 lb per sq.
The sensor unit is intended for use as a handheld anemometer or for temporary installation.
For more accurate information you may also choose to install an anemometer mast to gage wind speed data over a given period.Advertisement
In the tube anemometer also it is really the pressure that is measured, although the scale is usually graduated as a velocity scale.
Probably a sphere would prove most useful for a pressure anemometer, since owing to its symmetrical shape it would not require a weathercock.
Approximately II% should be added to the velocity recorded by a tube anemometer for each 1000 ft.
The pressure is measured by a " water-gauge " and the velocity of flow by an " anemometer."
As to anemometer pressures, it should be observed that the recorded pressure is made up of a positive front and negative (vacuum) back pressure, but in structures the latter must be absent or only partially developed.Advertisement
We measured the wind speed using an anemometer - see how we made our own here.
Station includes anemometer with 40 ' (12 m) cable and external temperature sensor with 25 ' (7.5 m) cable.
More rapid changes in wind speed may be measured using a ` hot wire anemometer ' .
Integrated sensor suite includes rain collector, temperature and humidity sensors, anemometer, and 40 ' (12 m) anemometer cable.
In the Robinson anemometer the axis of rotation is vertical, but with this subdivision the axis of rotation must be parallel to the direction of the wind and therefore horizontal.Advertisement
Anemometers may be divided into two classes, (1) those that measure the velocity, (2) those that measure the pressure of the wind, but inasmuch as there is a close connexion between the pressure and the velocity, a suitable anemometer of either class will give information about both these quantities.