BS 4836:1972

Cooperating organizations
Foreword
Specification
1. General
1.1 Scope
2. Determination of pressure differential/flow
     characteristics
2.1 Test rig
2.2 Test liquids
2.3 Test liquid volume
2.4 Test procedure
2.5 Test results
3. Determination of element bypass component
     characteristics
3.1 Test rig
3.2 Test liquids
3.3 Test liquid volume
3.4 Test procedure
3.5 Test results
4. Determination of initial retention of inorganic
     particles of specified sizes, variation in particle
     retention, filter life and cumulative efficiency
4.1 Introduction
4.2 Test rig
4.3 Organic contaminant feed mechanism
4.4 Test liquids
4.5 Standard contaminants
4.6 Blending of organic contaminant for test
4.7 Test procedure, initial particle retention test of
     complete filter
4.8 Test procedure, initial particle retention test of
     filter element
4.9 Test procedure, variation in particle retention of
     complete filter at changing pressure differential
     during process of filter clogging
4.10 Test procedure, variation in particle retention of
     filter element
4.11 Test procedure, life test of complete filter
4.12 Test procedure, life test of filter element
4.13 Test procedure, effect of water addition
4.14 Test results
5. Determination of filter element strength; resistance
     to high pressure differential and elevated
     temperatures
5.1 Introduction
5.2 Test rig
5.3 Test liquid and volume
5.4 Test procedure for resistance to high pressure
     differential
5.5 Test procedure for resistance to elevated
     temperatures
Table
1. Test flow rating, test oil volume and organic
    contaminant feed rate
Appendices
A. Determination of non-combustibles and petroleum
    ether insolubles by the filtration method
B. Determination of non-combustibles and petroleum
    ether insolubles by the centrifuge method
C. List of symbols
Figures
1. Diagrammatic arrangement of test rig for
    determination of pressure differential/flow
    characteristics, element bypass component
    performance, initial particle retention, variation
    in particle retention life and cumulative efficiency
2. Contaminant feed quadrant
3a. Filter installation for particle retention test
3b. Details of slurry addition vessel
4. Pressure differential/flow characteristics
5. Element bypass characteristics
6. Variation in particle retention
7. Life and cumulative efficiency
8. Specification for particle size distribution of
    test powder, MIRA Grade 2 (Andreasen sedimentation)
9. Specification for particle size distribution of
    test powder, MIRA Grade 3 (Andreasen sedimentation)
10. Specification for particle size distribution of
    test powder, MIRA Grade 4 (Andreasen sedimentation)
11. Specification for particle size distribution of
    test powder, MIRA Grade 5 (Andreasen sedimentation)

Specifies tests for determination of pressure differential/flow characteristics, initial retention of known size particles, variation in particle retention, filter life and cumulative efficiency, and filter element strength for full-flow lubricating oil filters for internal combustion engines within the range of 180 l/h to 14 000 l/h (40 gal/h to 3150 gal/h).