metrology

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Terms for subject Metrology (318 entries)

meter	A device intended to make a measurement, alone or in conjunction with other equipment
meter electrode	One or more pairs of contacts by means of which the induced voltage is detected
meter tube	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
MKS system	meter-kilogram-second system
metrology	The field of knowledge concerned with measurement
MHD channel	magnetohydrodynamic channel
MHD flow	magnetohydrodynamic flow
MHD generator	magnetohydrodynamic generator
minimum flow	Flow rate at a sensor, with the measuring signal being flow-dependent downstream from the sensor and flow-independent upstream from the sensor
minimum operating value	The smallest change in the input of a device, starting from the zero point, which causes a perceptible response in its output
MKS system	meter-kilogram-second system
nautile mile	n mile
nautile mile	n mile
NC contact	Relay contacts that are closed when the coil is not energised
ND filter	neutral density filter
nephelometric turbidity units	Turbidity in water is measured in units called NTU's, or nephelometric turbidity units. It is calculated by measuring the dispersion of a light beam passed through a sample of water
ND filter	neutral density filter
NMR standard	nuclear magnetic resonance standard
no contact	Relay contacts that are open when the coil is not energised
nominal operating range	The range of operating conditions within which a device is designed to operate and for which the influence quantities are stated

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