ASTM E283-04 (R2012) pdf free download.Standard Test Method for Determining Rate of Air Leakage Through Exterior Windows,Curtain Walls, and Doors Under Specified Pressure Differences Across the Specimen.
1.1 This test method covers a standard laboratory procedure for determining the air leakage rates of exterior windows, curtain walls, and doors under specified differential pressure conditions across the specimen. The test method described is for tests with constant temperature and humidity across the specimen.
1.2 This laboratory procedure is applicable to exterior windows, curtain walls, and doors and is intended to measure only such leakage associated with the assembly and not the installation. The test method can be adapted for the latter purpose.
1.3 This test method is intended for laboratory use. Persons interested in performing field air leakage tests on installed units should reference Test Method E783.
1.4 Persons using this procedure should he knowledgeable in the areas of fluid mechanics, instrumentation practices, and shall have a general understanding of fenestration products and components.
1.5 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.
6. Apparatus
6.1 The description of the apparatus in this section is general in nature. Any suitable arrangement of equipment capable of maintaining the required test tolerances is permitted.
6.2 Test Chamber—A well sealed box, wall, or other apparatus into or against which the specimen is mounted and secured for testing. An air supply shall he provided to allow a positive or negative pressure differential to be applied across the specimen without significant extraneous losses. The chamber shall he capable of withstanding the differential test pressures that may be encountered in this procedure. At least one static air pressure tap shall he provided on each side of the specimen to measure the test pressure dilierences. The pressure tap shall be located in an area of the chamber in which pressure readings will not be aflcted by any supply air. The air supply opening to the chamber shall be located in an area in which it does not directly impinge upon the test specimen.
6.2.1 Supply Air System—A controllable blower, exhaust fan, or reversible blower designed to provide the required air flow at the specified test pressure difference. The system should provide essentially constant air flow at the specified test pressure difference for a time period sufficient to obtain readings of air flow.
6.2.2 Pressure Measuring Apparatus—A device to measure the differential test pressures to ±2 % of selpoint or ±2.5 Pa (±0.01 in. of water column), whichever is greater.
6.2.3 Air Flow Metering System—A device to measure the air flow into the test chamber or through the test specimen.ASTM E283 pdf download.