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ANSI C78.682-1997 (S2022)
Electric Lamps Standard Method of Measuring the Pinch Temperature of Quartz Tungsten-Halogen Lamps
Specifies details of the type of thermocouple to be used to measure the pinch temperature of quartz-tungsten-halogen lamps, the methods of preparation of the lamp and thermocouple, and the measurement to be made.
NEMA: National Electrical Manufacturers Association [nema]