DESIGN OF A THERMAL WATTMETER IN THE AUDIO FREQUENCY RANGE
Journal Title: Metrology and Measurement Systems - Year 2008, Vol 15, Issue 4
Abstract
This paper describes the development of a system for the measurement of power in the audio frequency range. Flexible units operating with a strategy based on the evaluation of rms quantity by a thermal method have been constructed. For each unit of the set-up, measurements and a preliminary characterization have been performed. The main quantities to be measured are two voltages, difference and sum. The difference voltage has been evaluated by means a vectorial voltmeter, instead the sum voltage by means a rms voltmeter. The module of the voltage difference in the acoustic band seems to be lower than 10 µV. Further investigation and results will be extended when all components of the measuring system will be employed together.
Authors and Affiliations
U. POGLIANO, B. TRINCHERA, G. BOSCO, D. SERAZIO
Keywords
Related Articles
- EP ID EP96824
- DOI -
- Views 71
- Downloads 0
SIMPLE METHOD OF 3D ERROR COMPENSATION OF TRIGGERING PROBES ON COORDINATE MEASURING MACHINE
In this study an automatic, simple algorithm of systematic error corrections of a CMM touch triggering probe is proposed. The whole process does not exceed a standard calibration procedure done on coordinate machine befo...
REPORT ON IMEKO TC4 SYMPOSIUM & ADC WORKSHOP<br /> IN GDYNIA/JURATA, SEPTEMBER 2005
The 14th International Symposium on New Technologies in Measurement and Instrumentation as well as the 10th Workshop on ADC Modeling and Testing took place in Gdynia (Opening Ceremony and Plenary Session) and Jurata (Wor...
CALIBRATION OF EXTREMELY SENSITIVE RANGES OF DC PICOAMMETERS WITH ANALOG ACTIVE I/U CONVERSION
The paper deals with the problem of calibration of extremely sensitive picoammeters with measuring ranges close to limits of the measuring possibilities. The presented method of calibration bases on a resistive source of...
ADVANCED NANOMETROLOGY TECHNIQUES OF CARBON NANOTUBES CHARACTERIZATION
It has become evident that carbon nanotubes (CNTs) possess exceptionally high physical, mechanical, electrical, and structural properties that made them attractive for researchers to investigate. In this paper, CNTs synt...
COMPARISON BETWEEN SIMPLE POLYNOMIALS AND AN ITS-90 BASED REFERENCE FUNCTIONS OF EMF VS. TEMPERATURE RELATION FOR HIGH PURITY NOBLE METAL THERMOCOUPLES
Emf versus temperature reference polynomial functions covering the temperature range from 100° C up to 960° C have been developed for three types of noble metal thermocouples, which are Pt-10%Rh/Pt, Au/Pt and Pt/Pd. Our...