SAE J3078/2 specifies two uniform test methods to determine performance levels for fresh and recirculation air filters used in operator enclosures with an air ventilation system. It is not applicable for testing vapor and gas filters. The category of machines covered include off-road self-propelled work machines as defined in SAE J1116 and tractors and machinery for agriculture and forestry as defined in ANSI/ASAE S390.
Rationale
This SAE filter test standard provides two uniform test methods, one for filters classified for general use and one for use when classification for more efficient filtration is required.
ISO 11155-1 and ISO 29463 are fractional efficiency test methods which address a wide variety of filter media types, filter shapes, efficiency requirements, and airflow ranges that are utilized in modern operator enclosures.
Tests were performed to determine a correlation between the ISO 5011 gravimetric test method (the testing method used by SAE J1533) and the ISO 11155-1 fractional efficiency test method. Filters with an efficiency ≥96%, under ISO 5011, were tested under ISO 11155-1. They were found to be approximately 92 to 98% efficient on particles from 5.50 to 10 µm in size. ISO 11155-1 tests for filtration efficiency using a fractional efficiency test method; however, it does not produce a filter classification.
ISO 29463 is to be applied when specifications require high efficiency filtration. Specification for filtration efficiency shall be correlated to the appropriate classification as found in ISO 29463-1:2017 Section 5, for example: ISO 15 E, ISO 20 E, ISO 25 E, ISO 35 H. This document will replace SAE J1533.
HFTC6, Operator Accommodations Committee reports to the Human Factors Technical Committee (HFTC) and is part of the Construction, Agriculture, and Off-Road Machinery (ConAg) Council. HFTC6 is dedicated to creating, preparing and maintaining relevant specification, standards and requirements relating to Operator Accommodations including Heating, Ventilation, Air-conditioning and Defrost. The category of machines covered include Off-Road Self-Propelled Work Machines as defined in SAE J1116 and may include Tractors and Machinery for Agriculture and Forestry as defined in ANSI/ASAE S390. Participants in HFTC6 committee are acting as individuals currently involved in the construction, agricultural and related industries through OEMs, suppliers, consulting firms, government and other organizations.
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J3078/2_202104
Off-Road Self-Propelled Work Machines Operator Enclosure Environment Part 2: Air Filter Element Test Method
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Off-Road Self-Propelled Work Machines Operator Enclosure Environment Part 2: Air Filter Element Test Method
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