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Standard Practice for Secondary Calibration of Airborne Particle Counter Using Comparison Procedures (Withdrawn 2007)
Automaticky přeložený název:
Standardní praxe pro střední kalibraci Airborne Particle Counter Použití postupy srovnání (Withdrawn 2007 )
NORMA vydána dne 10.5.2001
Označení normy: ASTM F649-01
Poznámka: NEPLATNÁ
Datum vydání normy: 10.5.2001
Kód zboží: NS-56010
Počet stran: 4
Přibližná hmotnost: 12 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
calibration, airborne, ICS Number Code 17.020 (Metrology and measurement in general)
1. Scope |
1.1 This practice covers procedures for adjusting the size ranges of an airborne discrete particle counter (DPC) to match size/concentration data from a reference DPC that has been calibrated for counting and sizing accuracy in accordance with Practice F 328 and is kept in good working order. The practice is applied in situations where time, capabilities, or both, required for carrying out procedures in Practice F 328 are not available. It is particularly useful where more than one DPC may be required to observe an environment where the particulate material being counted and sized is different in composition from the precision spherical particulate materials used for calibration in Practice F 328 and/or all of the DPCs in use are not similar in optical or electronic design. 1.2 Procedures covered here include those to measure sampled and observed air volume or flow rate, zero count level, particle sizing and counting accuracy, particle sizing resolution, particle counting efficiency, and particle concentration limit. |
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