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Terms for subject Metrology (347 entries)

MHD channel	magnetohydrodynamic channel
MHD flow	magnetohydrodynamic flow
MHD generator	magnetohydrodynamic generator
marking transfer certificate	A certificate that confirms the correct transfer of the material identification stamp of a semi-finished product to a finished product
material	The materials used in the construction of the equipment, in particular for parts which come into contact with the process or environment
material identification check	A test that provides an unambiguous identification of a material
measurand	The variables measured by the equipment
measured error	The greatest possible positive or negative value of error determined from the curve of average upscale error or the curve of average downscale error
measured value	The numerical quantity expressed by a number and unit of measurement resulting from the information obtained by a measuring device, at the instant considered under specified conditions
measured variable	The variables measured by the equipment
measurement	The determination of the existence or the magnitude of a variable
measurement influence	A quantity which is not the subject of measurement, but which influences the value of the measured variable of the indication of the measuring instrument, e.g. ambient temperature
measuring error	The greatest possible positive or negative value of error determined from the curve of average upscale error or the curve of average downscale error
measuring instrument	A device intended to make a measurement, alone or in conjunction with other equipment
measuring pipe	Of an electromagnetic flowmeter: The pipe section of the primary device through which the fluid to be measured flows; its inner surface usually electrically insulated
measuring principle	The principle used and the physical quantity measured in order to determine the measured variable
measuring (effective) range	For an analogue display unit, the range of analogue values which can be displayed without permanent impairment of the operating characteristics
measuring range	The measuring range that the equipment has been designed to measure. The measuring range is defined by a lower and an upper range-limit. Within this range, measurements are made within specified accuracies. In addition, depending upon the physical quantity being measured, adjustment ranges for the lower and upper range-limits or a rangeability may also be specified. These may be expressed as a percentage of the maximum span, as absolute values or as a ratio
measuring range lower limit	The lowest value of the measured variable to which a device can be adjusted to measure within a specified accuracy
measuring range upper limit	The highest value of the measured variable to which a device can be adjusted to measure within a specified accuracy