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Terms for subject Metrology (318 entries)

UCS diagram	uniform-chromaticity-scale diagram
ultrasonic test	A non-destructive material test that gives information about the presence of inclusions or cavities beneath the surface of a material
UV irradiation	ultraviolet irradiation
UCS diagram	uniform-chromaticity-scale diagram
upper range-value	The highest value of the measured variable that a device is adjusted to measure
user interface	The human interface specifies details of its design, operating concept, structure and functionality. The human interface describes operating elements, displays, foreign system interfaces (when allowing human operation) testing and configuration elements, e.g. solder bridges, DIP-switches, re-ranging elements, handheld terminals, auxiliary stations
UV irradiation	ultraviolet irradiation
V-to-t converter	voltage-to-time converter
variable	A quantity or condition whose value is subject to change and can usually be measured
VLF comparison	very low-frequency comparison
vibration resistance	The ability of the measuring equipment to withstand sinusoidal vibrations without permanent impairment of operating characteristics
VITON®	Registered trademark of E.I. Du Pont de Nemours & Co., Wilmongton, USA. Tradename for FPM
VLF comparison	very low-frequency comparison
Voltage Transfer Program enclosure	VTP enclosure
V-to-t converter	voltage-to-time converter
VOLTALEF®	Registered trademark of Elf Atochem. Tradename for PCTFE
volumetric method	Method of measurement in which the flow rate is derived from the change in volume occupied by the fluid in a calibrated measuring tank during a measured time
warm-up period	The time required after energising the measuring equipment before its performance characteristics apply. Quelle: IEC 61987
weather protection cover	The weather protection cover is mounted on the housing of a field instrument to protect the instrument against the influence of the sun, rain, wind etc. The housing with the attached weather protection cover can be mounted on a post or on the wall
weekly program	An individually programmed cleaning program for every day of the week