How to measure the aperture size

How to measure the aperture size, Total:12 items.

In the international standard classification, How to measure the aperture size involves: Linear and angular measurements, Energy and heat transfer engineering in general, Paper and board, Installations in buildings, Fasteners.

Heilongjiang Provincial Standard of the People's Republic of China, How to measure the aperture size

• DB23/T 1524-2013 Technical regulations for small aperture measuring instruments with large depth-to-diameter ratio

American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), How to measure the aperture size

• ASHRAE AN-04-4-3-2004 Measurement of Pore Size Variation and Its Effect on Energy Wheel Performance

Ente Nazionale Italiano di Unificazione, How to measure the aperture size

• UNI 10481:1995 Filter paper. Determination of equivalent diameter of maximum, minimum and mean flow pore.
• UNI 6946:1971 Tapping screws of steel. Core holes.

American Society of Mechanical Engineers (ASME), How to measure the aperture size

• ASME MFC-14M-1995 Measurement of fluid flow using small bore precision orifice meters
• ASME MFC-14M-2003 Measurement of Fluid Flow Using Small Bore Precision Orifice Meters
• ASME MFC-14M-2003(R2018) Measurement of Fluid Flow Using Small Bore Precision Orifice Meters

National Metrological Technical Specifications of the People's Republic of China, How to measure the aperture size

• JJF 1806-2020 Calibration Specification for Measuring Equipment of Diameter of Micro and Small Hole

NL-NEN, How to measure the aperture size

• NEN 5168-1990 Geotextile Determination of the characteristic pore size in dry condition

IPC - Association Connecting Electronics Industries, How to measure the aperture size

• IPC TM-650 2.2.6A-1997 Hole Size Measurement@ Drilled
• IPC TM-650 2.2.6-1973 Hole Size Measurement@ Drilled

CZ-CSN, How to measure the aperture size

• CSN 50 0402-1994 Filter papers. Determination of the maximum pore diameter

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