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

fYear

2014

fDate

12-15 May 2014

Firstpage

1271

Lastpage

1274

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference (I2MTC) Proceedings, 2014 IEEE International

Conference_Location

Montevideo

Type

conf

DOI

10.1109/I2MTC.2014.6860949

Filename

6860949