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Terms for subject
Metrology
(318 entries)
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
measuring 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
mechanical construction
Specification of the mechanical construction of the measuring equipment. Details shall be given of all parts of direct relevance to its use, e.g. process connections, seals, wetted parts, electrical connections, special cases
(special materials, special versions)
and accessories
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
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