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LABORATORY TESTS OF PRODUCTION KRYPTON-FILLED MARINE SIGNAL LAMPS,
COAST GUARD WASHINGTON DC
This report compares detailed measurements of the performance of krypton-filled and argon-filled 6.2-volt marine signal lamps of the 0.46-ampere and 0.70-ampere sizes. Measurements included current drain, luminous intensity, and color temperature as functions of applied voltage current drain and luminous intensity as functions of time for flashing operation at rated voltage current drain and luminous emittance as functions of time in operation at rated voltage Lamplife at rated voltage. The report concludes that krypton-filled lamps are significantly superior to argon-filled lamps of corresponding size in terms of luminous emittance and luminous efficiency, and only slightly inferior in terms of lamplife. Author