VOCABULAR international de termeni utilizati in metrologie - UTM
VOCABULAR international de termeni utilizati in metrologie - UTM
VOCABULAR international de termeni utilizati in metrologie - UTM
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Exemple<br />
In exemplele <strong>de</strong> la punctul 1.18.:a)5,34; 534. b)0,152; 152. c)0,012; 12.<br />
1.22.(1.21.) SCARA DE REPERE, SCARA DE REFERINTA CONVENTIONALA –<br />
Pentru marimi particulare <strong>de</strong> o natura data, un ansamblu ordonat <strong>de</strong> valori, cont<strong>in</strong>ue sau<br />
discrete, <strong>de</strong>f<strong>in</strong>it pr<strong>in</strong> conventie ca refer<strong>in</strong>ta pentru ordonarea marimilor <strong>de</strong> aceeasi natura <strong>in</strong><br />
ord<strong>in</strong>e crescatoare (sau <strong>de</strong>screscatoare) a valorilor.<br />
Exemple<br />
unei marimi.<br />
2.MASURARI<br />
a)scara <strong>de</strong> duritate Mohs<br />
b)scara <strong>de</strong> pH <strong>in</strong> chimie<br />
c)scara cifrelor octanice pentru carburanti.<br />
2.1.MASURARE - ansamblu <strong>de</strong> operatii avand ca scop <strong>de</strong>term<strong>in</strong>area unei valori a<br />
Nota<br />
Operatiunile pot fi executate automat.<br />
2.2.METROLOGIE - sti<strong>in</strong>ta a masurarilor<br />
Nota<br />
Metrologia <strong>in</strong>clu<strong>de</strong> toate aspectele atat teoretice cat si practice, referitoare la masurari,<br />
oricare ar fi <strong>in</strong>certitud<strong>in</strong>ea acestora, <strong>in</strong> orice domeniu al sti<strong>in</strong>tei si al tehnologiei s-ar efectua.<br />
2.3.(2.05) PRINCIPIU DE MASURARE - baza sti<strong>in</strong>tifica a unei masurari.<br />
Exemple<br />
a) efectul termoelectric aplicat pentru masurarea temperaturii<br />
b) efectul Josephson aplicat pentru masurarea tensiunii electrice<br />
c) efectul Doppler aplicat pentru masurarea vitezei<br />
d) efectul Raman aplicat pentru masurarea numarului <strong>de</strong> unda al vibratiilor moleculare<br />
2.4.(2.06) METODA DE MASURARE - succesiune logica a operatiilor, <strong>de</strong>scrise <strong>in</strong><br />
mod generic,utilizata <strong>in</strong> efectuarea masurarilor.<br />
Nota<br />
Meto<strong>de</strong>le <strong>de</strong> masurare pot fi clasificate <strong>in</strong> diferite moduri, cum ar fi :<br />
� metoda substitutiei,<br />
� metoda diferentiala,<br />
� metoda <strong>de</strong> zero.<br />
2.5.(2.07) PROCEDURA DE MASURARE - ansamblu <strong>de</strong> operatii, <strong>de</strong>scrise <strong>in</strong> mod<br />
concret, utilizate <strong>in</strong> efectuarea unor masurari anumite <strong>in</strong> conformitate cu o metoda data.<br />
10