Title :
Output dynamic range of radiometers based on thermoresistive sensors
Author :
Nascimento, Vanuza M. ; Silva, Thais L. V. N. ; Martins, Viviane S. G. ; Lobo, Petrov C. ; Freire, Raimundo Carlos S.
Author_Institution :
Eng. Electron. Dept., UFCG, Campina Grande, Brazil
Abstract :
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 dynamic output voltage of this type of radiometer. In addition, it was evaluated the output dynamic voltage for a constant temperature difference between the sensor and the environment. The sensors used were NTC and PTC, with analog voltage and pulse width outputs.
Keywords :
electric sensing devices; radiometers; temperature measurement; temperature sensors; NTC; PTC; analog voltage output; electrical equivalence principle; electrical sensor; environmental temperature variation; instrumentation system; metrology system; negative temperature coefficient; positive temperature coefficient; pulse width output; radiometer; solar radiation measurement; thermoresistive sensor; Radiometers; Resistance; Sensor phenomena and characterization; Temperature measurement; Temperature sensors; electrical equivalence; radiometers; thermo resistive sensors;
Conference_Titel :
Instrumentation and Measurement Technology Conference (I2MTC) Proceedings, 2014 IEEE International
Conference_Location :
Montevideo
DOI :
10.1109/I2MTC.2014.6860949
