Static error in the temperature constant measurement configurations due to DC amplifier offset voltage

Author

Freire, Raimundo C S ; Santos, Francisco F. ; Alves, Raimundo N C ; Barros, Alessio T. ; Luciano, Benedito A.

Author_Institution

Univ. Fed. da Campina Grande, Brazil

Volume

2

fYear

2003

Firstpage

1607

Abstract

The DC amplifier offset voltage introduces dynamic and static errors in measurements based on heated sensors at constant temperature configuration. It is shown, in the case of a radiometer, the variation of static errors in function of offset voltage for configurations of feedback based on analogic voltage control and on pulse width modulation - PWM. These errors increase with offset voltage and are similar in PWM configuration, decreasing with pulse amplitude.

Keywords

DC amplifiers; measurement errors; pulse width modulation; radiometers; temperature measurement; DC amplifier offset voltage; PWM configuration; analogic voltage control; heated sensors; pulse amplitude; pulse width modulation; radiometer; static error; temperature constant measurement; Error correction; Feedback; Pulse amplifiers; Pulse width modulation; Radiometry; Space vector pulse width modulation; Temperature measurement; Temperature sensors; Thermal sensors; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2003. IMTC '03. Proceedings of the 20th IEEE

ISSN

1091-5281

Print_ISBN

0-7803-7705-2

Type

conf

DOI

10.1109/IMTC.2003.1208021

Filename

1208021