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Thermo-resistive sensors are widely used in metrology and instrumentation systems. In the case of radiometers used in measurement of solar radiation, the classical architecture uses the principle of electrical equivalence in which the electrical sensor is kept at a constant temperature. The objective of this study is to evaluate the influence of environmental temperature variation according to the...
This paper presents an architecture of a hot-wire anemometer that adjusts the difference between the sensor temperature and the fluid temperature and maximizes the sensitivity of the output quantity (voltage or pulse width) in relation to the input quantity (velocity). Analyses were made for the PTC and NTC sensors type and for output in pulse width or analog voltage type. It was verified that, for...
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