ISO-5782-2-1997.pdf
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1、INTERNATIONAL STANDARD IS0 5782-2 First edition 1997-12-15 Pneumatic fluid power - Compressed air filters - Part 2: Test methods to determine the main characteristics to be included in suppliers literature Transmissions pneumatiques - Filtres pour air cornprim a=400net; p=iso; o=isocs; sxentral Prin
2、ted in Switzerland ii Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 01:17:39 MDTNo reproduction or networking permitted without license from IHS -,-,- 0 IS0 IS0 5782-2: 1997(E)
3、 Introduction In pneumatic fluid power systems, power is transmitted and controlled through air under pressure within a circuit. Where mechanical filtration of the air media is desired, filters are components designed to remove solid and liquid contaminants from compressed air. Copyright Internation
4、al Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 01:17:39 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD IS0 IS0 5782-2: 1997(E) Pneumatic fluid power
5、 - Compressed air filters - Part 2: Test methods to determine the main characteristics to be included in suppliers literature 1 Scope This part of IS0 5782 specifies tests, procedures and a method of presenting the results concerning the parameters which define the main characteristics to be include
6、d in the suppliers literature of filters conforming to IS0 5782-i. The scope of this part of IS0 5782 is - to facilitate the comparison of filters by standardizing test methods and presentation of test data; - to assist in the proper application of filters in compressed air systems. The tests specif
7、ied are intended to allow comparison between the different type of filters; they are not production tests to be carried out on each filter manufactured. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of IS0
8、5782. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of IS0 5782 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and
9、 IS0 maintain registers of currently valid International Standards. IS0 3:1973, Preferred numbers - Series of preferred numbers. IS0 2944:1974, Fluid power systems and components - Nominal pressures. IS0 3448:1992, Industrial liquid lubricants - IS0 viscosity classification. IS0 5598:1985, Fluid pow
10、er systems and components - Vocabulary. IS0 5782-i :1997, Pneumatic fluid power - Compressed air filters - Part 7: Main characteristics to be included in suppliers literature and product-marking requirements. IS0 6358:1989, Pneumatic fluid power - Components using compressible fluids - Determination
11、 of flow-rate characteristics. 3 Definitions For the purposes of this part of IS0 5782, the definitions given in IS0 5598 and IS0 5782-l apply. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resal
12、e, 04/25/2007 01:17:39 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 5782-2: 1997(E) IS0 4 Units Units from IS0 1000 are generally used in pneumatic fluid power systems, in particular: - gauge pressure, expressed in kilopascals (bars); - temperature, expressed in degr
13、ees Celsius; - flow rate, expressed in cubic decimetres per second (ANR). 5 Test conditions 5.1 Temperature The temperature of the processed air, the equipment and the ambient air temperature shall be maintained at 25 “C * 10 “C for all tests. 5.2 Pressures The specified pressures shall be held to w
14、ithin * 2 %. The preferred test pressures are those given in 4.2.1 of IS0 5782-1:1997 or in IS0 2944. Where other test pressures are required, the values shall be chosen from series R5 of preferred numbers, according to IS0 3. 6 Test procedure to verify rated pressure 6.1 Perform this test on three
15、random samples with a proposed rated pressure for the product. 6.2 In this test, the product-sealing means can be modified to prevent leakage and allow structural failure to occur; but modifications must not increase the structural strength of the pressure-containing envelope. 6.3 Fill samples with
16、a liquid of viscosity that does not exceed IS0 VG 32, according to IS0 3448, and install them in the temperature environment described in 5.1. 6.4 After stabilizing the temperature, pressurize slowly to a level of 1,5 times the proposed rated pressure. Hold at this level for 2 min and observe for le
17、akage or failure (as defined in 6.6). 6.5 If there is no leakage or failure, increase the pressure by approximately half of its proposed, rating. Hold at this pressure for 2 min and observe for leakage or failure (as defined in 6.6). If there is still no leakage or failure, in terms of the following
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