Cardinal Gates VICTOREEN 948A-50 - Manual (Page 7)

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Indicated battery and other operational tests must be performed prior to each use to assure that the instrument is
functioning properly. If applicable, failure to conduct periodic performance tests in accordance with ANSI N323-1978
(R1983) Radiation Protection Instrumentation Test and Calibration, paragraphs 4.6 and 5.4, and to keep records
thereof in accordance with paragraph 4.5 of the same standard, could result in erroneous readings or potential
danger. ANSI N323-1978 becomes, by this reference, a part of this operating procedure.