#Hot wire anemometer sensor iso#

To be able to meet the requirements of the standard in the comfort application, including a measuring range from 0.05 to 1 m/s, an accuracy of ± (0.05 + 0.05 * va) m/s, where va is the average speed over the measurement period, and a response time of 0.5 s, there is a need to have a stable, fast and accurate sensor. Just as it is essential to have short response times to capture the smallest fluctuations in air velocity necessary to obtain the turbulence index.

#Hot wire anemometer sensor iso#

LSI Lastem is among the few companies in the world to design and manufacture anemometers based on true “hot wire” technology, in which the sensitive element is not a thermistor but a tungsten wire, with all the advantages deriving from an accurate sensor, quick in response and adhering to the specifications of ISO 7726 in the accuracy above 0.5 m/s.

Speed fluctuations, indicated by the turbulence index TU, must also be monitored. Air velocity must be described both by the average velocity over a period and by its standard deviation. The UNI EN ISO 7726 standard prescribes strict limits regarding the accuracy and response times of the sensors for air speed measurements, both in comfort and thermal stress conditions. Submersible sensors for the water level.Water conductivity, temperature and level.