(CMS) a program in which the total number of survey items is arranged in order to provide for survey of approximately 20% of the machinery each year during a fiveyear period. 
(CMS) a program in which the total number of survey items is arranged in order to provide for survey of approximately 20% of the machinery each year during a fiveyear period. 
Related Terms 
CMSContinuous Survey of Machinery  a program in which the total number of survey items is arranged in order to provide for survey of approximately 20% of the machinery each year during a fiveyear period. 
INTEGRATING FREQUENCY METERAn instrument that measures the total number of cycles through which the alternating voltage of an electric power system has passed in a given period of time, enabling this total to be compared with the number of cycles that would have elapsed if the prescribed frequency had been maintained. Also known as master frequency meter. 
INJECTION

NUSSELT NUMBERA dimensionless number used in the study of forced convection which gives a measure of the ratio of the total heat transfer to conductive heat transfer, and is equal to the heattransfer coefficient times a characteristic length divided by the thermal conductivity. Symbolized NNu. 
NUTATINGDISK METERAn instrument for measuring flow of a liquid in which liquid passing through a chamber causes a disk to nutate, or roll back and forth, and the total number of rolls is mechanically counted. 
DIAMOND SIZEIn the bitsetting and diamonddrilling industries, the number of equalsize diamonds having a total weight of 1 carat; a 10diamond size means 10 stones weighing 1 carat. 
THERMO ACOUSTICAL EFFICIENCYEqual to the sound power level/heat release. A value used to characterize the amount of combustion noise emitted from a flame. Defined as the ratio of the acoustical power emitted from the flame to the total heat release of the flame. Approximately equal to 1 X 106 for premixed and turbulent flames and equal to 1 X 109 for diffusion and laminar flames. 
STACK LOSSThe fraction of total heat which exits with the flue gas through the stack. The quantity is customarily expressed as a percent of the total heat input. The stack loss is directly proportional to the stack exit temperature; the higher the temperature, the greater the stack loss. 
CONTINUOUS BLOWDOWNThe uninterrupted removal of concentrated boiler water from a boiler to control total solids concentration in the remaining water. 
MOLE FRACTIONThe number of moles of any component in a mixture divided by the total number of moles in the mixture. 
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