How to choose between an air volume hood and an anemometer
The price difference between anemometer and anemometer is very big, often customers will have this question: anemometer can replace the anemometer?
Anemometer is mainly composed of three parts: anemometer body, base, PDA composition of anemometer and anemometer how to choose the hood
The body of anemometer is mainly used to collect the wind volume and gather the wind to the wind speed homogenizer on the base. There is a wind pressure sensor on the wind speed uniform, and the sensor reacts to the change of wind speed. The anemometer adopts the Pitot tube type principle, which automatically detects the wind pressure at multiple points and time points, and then calculates the wind volume according to the size of the base to produce the average wind volume (m3/h). The display of the air volume hood adopts PDA, with a large LCD screen displaying intuitively, and the data of wind speed and air temperature and air volume can be obtained directly, and the recording interval can be set for continuous parameter recording so that the data can be analyzed. Measured and recorded data are recorded on the memory card and will not be lost, and can be transferred to a PC through the computer's serial port as well as for further applications.
The use of anemometer:0 to 100m/s flow velocity measurement range can be divided into three zones: low-speed: 0 to 5m/s; medium-speed: 5 to 40m/s; high-speed: 40 to 100m/s. Anemometer's thermal probe is used for 0 to 5m/s **measurement; anemometer's rotating wheel probe measures the flow velocity from 5 to 40m/s with the best results; and the use of Pitot tube can be used for high-speed range to get the best results. The best results can be obtained in the high speed range by utilizing a Pitot tube. An additional criterion for the correct selection of an anemometer's flow velocity probe is the temperature, typically the thermal sensor of an anemometer can be used at temperatures up to about +-7˚C, the rotor probe of a customized anemometer can be used at up to 35˚C, and the Pitot tube can be used at temperatures of +35˚C and above.
Anemometer generally single-point measurement, test data ** degree is not high, when the air outlet vortex \ jet wind speed is not very accurate, and an air outlet to measure several points, or even a dozen points to get the average wind speed, if there are a few high-efficiency air supply outlet is very troublesome, need to spend a lot of time to test and according to the area of the outlet calculations, the accuracy is not enough. Therefore, the airflow hood is the most suitable choice for dust-free places with strict requirements.
