ISO 14269-4:1997 PDF

Tractors and self-propelled machines for agriculture and forestry — Operator enclosure environment — Part 4: Air filter element test method

Название (английский):

ISO 14269-4:1997

Tractors and self-propelled machines for agriculture and forestry — Operator enclosure environment — Part 4: Air filter element test method

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 7
Дата публикации:: 11 декабря 1997 г.
Издание:: ISO IS 14269 edition 1 version 1
ICS:: 65.060.01

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Описание (английский):

La présente partie de l'ISO 14269 prescrit une méthode uniforme d'essai permettant de déterminer les niveaux de performance des filtres à air de type panneau de l'enceinte de l'opérateur. Elle est applicable aux tracteurs et machines automotrices pour l'agriculture et la sylviculture équipés d'une enceinte avec système de ventilation.

Технические детали

Технический комитет: ISO/TC 23/SC 2 - Common tests
SKU: ISO 14269-4:1997

Abstract

Overview

ISO 14269-4:1997 defines a uniform test method for panel-type air filter elements used in operator enclosures of tractors and self-propelled machines for agriculture and forestry. The standard specifies how to measure filter performance - including particulate removal efficiency, particulate holding capacity, airflow resistance (pressure drop) and sealing characteristics - to ensure operator enclosure ventilation systems provide clean intake air.

Key topics and requirements

Scope: Applies to operator enclosure air filter elements for agricultural and forestry tractors and self-propelled machines equipped with ventilation systems.
Test setup: Detailed shroud and equipment configurations (dust metering, dust injector, blower, absolute filter housing, flow and restriction measurement) are specified. Representative figures and injector dimensions are provided.
Test dust and concentration:
- Two standardized dust grades: fine and coarse, with defined chemical composition ranges and particle size distributions.
- Recommended dust concentration: 1 g/m³ for both fine and coarse dust (selected as a practical representation of severe visibility conditions).
Environmental and flow conditions:
- Airflow measurements corrected to 25 °C and 100 kPa.
- Tests conducted with intake air at 24 °C ± 8 °C and relative humidity 50 % ± 15 %.
- Minimum intake velocity into the dust mixing chamber: 6 m/s.
- Face velocity for the absolute filter should not exceed 50 m/min to preserve media integrity.
Absolute filter specification: Fiberglass media, minimum thickness 12.7 mm, minimum density 9.5 kg/m³, fiber diameter 0.76–1.27 µm, moisture absorption

Overview

Key topics and requirements

Scope: Applies to operator enclosure air filter elements for agricultural and forestry tractors and self-propelled machines equipped with ventilation systems.
Test setup: Detailed shroud and equipment configurations (dust metering, dust injector, blower, absolute filter housing, flow and restriction measurement) are specified. Representative figures and injector dimensions are provided.
Test dust and concentration:
- Two standardized dust grades: fine and coarse, with defined chemical composition ranges and particle size distributions.
- Recommended dust concentration: 1 g/m³ for both fine and coarse dust (selected as a practical representation of severe visibility conditions).
Environmental and flow conditions:
- Airflow measurements corrected to 25 °C and 100 kPa.
- Tests conducted with intake air at 24 °C ± 8 °C and relative humidity 50 % ± 15 %.
- Minimum intake velocity into the dust mixing chamber: 6 m/s.
- Face velocity for the absolute filter should not exceed 50 m/min to preserve media integrity.
Absolute filter specification: Fiberglass media, minimum thickness 12.7 mm, minimum density 9.5 kg/m³, fiber diameter 0.76–1.27 µm, moisture absorption

ISO 14269-4:1997 PDF

Технические детали

Abstract

Overview

Key topics and requirements

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Abstract

Overview

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