GB/Z 43482-2023Hydraulic fluid power - Hose and hose assemblies - Method of collecting a fluid sample for analyzing the cleanliness of a hose or hose assembly (English PDF)

Foreword

This document specifies two methods for collecting a fluid sample to be used to analyse the cleanliness of hydraulic fluid power hoses or hose assemblies within a certain inside diameter and length range (this range includes the majority of hose assemblies of real fluid power applications).

This document is a specific application of ISO 18413:2015, specifically Annexes A and B.

The two methods described in this document are intended for collecting only solid particulate contamination; they may not be appropriate for collecting contamination in liquid or grease form.

The scope of this document does not include providing efficient and effective cleaning methods for hose assemblies.

1 Scope

This document specifies two methods for collecting a fluid sample to be used to analyse the cleanliness of hydraulic fluid power hoses or hose assemblies within a certain inside diameter and length range (this range includes the majority of hose assemblies of real fluid power applications).

This document is a specific application of ISO 18413:2015, specifically Annexes A and B.

The two methods described in this document are intended for collecting only solid particulate contamination; they may not be appropriate for collecting contamination in liquid or grease form.

The scope of this document does not include providing efficient and effective cleaning methods for hose assemblies.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 3722 Hydraulic fluid power - Fluid sample containers - Qualifying and controlling cleaning methods

ISO 4405 Hydraulic fluid power - Fluid contamination - Determination of particulate contamination by the gravimetric method

ISO 4406 Hydraulic fluid power - Fluids - Method for coding the level of contamination by solid particles

ISO 4407 Hydraulic fluid power - Fluid contamination - Determination of particulate contamination by the counting method using an optical microscope

ISO 4788 Laboratory glassware - Graduated measuring cylinders

ISO 5598 Fluid power systems and components - Vocabulary

ISO 11500 Hydraulic fluid power - Determination of the particulate contamination level of a liquid sample by automatic particle counting using the light-extinction principle

ISO 18413 Hydraulic fluid power - Cleanliness of components - Inspection document and principles related to contaminant extraction and analysis, and data reporting

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 3722 Hydraulic fluid power - Fluid sample containers - Qualifying and controlling cleaning methods

ISO 4405 Hydraulic fluid power - Fluid contamination - Determination of particulate contamination by the gravimetric method

ISO 4406 Hydraulic fluid power - Fluids - Method for coding the level of contamination by solid particles

ISO 4407 Hydraulic fluid power - Fluid contamination - Determination of particulate contamination by the counting method using an optical microscope

ISO 4788 Laboratory glassware - Graduated measuring cylinders

ISO 5598 Fluid power systems and components - Vocabulary

ISO 11500 Hydraulic fluid power - Determination of the particulate contamination level of a liquid sample by automatic particle counting using the light-extinction principle

ISO 18413 Hydraulic fluid power - Cleanliness of components - Inspection document and principles related to contaminant extraction and analysis, and data reporting

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 5598 and ISO 18413 and the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

——IEC Electropedia: available at http://www.electropedia.org/

——ISO Online browsing platform: available at https://www.iso.org/obp

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 5598 and ISO 18413 and the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

——IEC Electropedia: available at http://www.electropedia.org/

——ISO Online browsing platform: available at https://www.iso.org/obp

4 Test equipment

4.1 Sample containers, cleaned, qualified, and controlled as appropriate for purpose. ISO 3722 provides an acceptable method of qualification and control.

4.2 Graduated cylinders or beakers, as required, conforming to ISO 4788 and cleaned, qualified, and controlled as appropriate for purpose. ISO 3722 provides an acceptable method of qualification and control.

4.3 Caps or plugs, as required to seal test items; these shall be leak-free and properly rinsed or flushed and shall not increase the measured contamination of the test item.

4.4 Test liquid, with the following characteristics:

a) It shall be compatible with all materials used in the test item, as well as with the working liquid of the final system. It should also be compatible with the test equipment, including seals and filters.

b) It shall have a viscosity of <= 5 mm2 /s at the test temperature.

c) It shall have a contamination level sufficiently low to minimize its contribution to the total measured test item's contamination. If different specifications are not agreed upon between the involved parties, the test liquid contamination level is sufficiently low when the contaminant present in a test liquid volume equal to V C is less than 10 % of the SCL, in each size class. When the SCL. is not specified, test liquid contamination shall not exceed in any size range the limit number of particles per 100 ml given in Table 1 (limits are cumulative: all particles over the given size are recorded).

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GB/Z 43482-2023 Hydraulic fluid power—Hose and hose assemblies—Method of collecting a fluid sample for analyzing the cleanliness of a hose or hose assembly (English) Standard No.

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Detail of GB/Z 43482-2023 Standard No.

Hydraulic fluid power—Hose and hose assemblies—Method of collecting a fluid sample for analyzing the cleanliness of a hose or hose assembly Chinese Name

Chinese Classification J20

4 Test equipment

4.1 Sample containers, cleaned, qualified, and controlled as appropriate for purpose. ISO 3722 provides an acceptable method of qualification and control.

4.2 Graduated cylinders or beakers, as required, conforming to ISO 4788 and cleaned, qualified, and controlled as appropriate for purpose. ISO 3722 provides an acceptable method of qualification and control.

4.3 Caps or plugs, as required to seal test items; these shall be leak-free and properly rinsed or flushed and shall not increase the measured contamination of the test item.

4.4 Test liquid, with the following characteristics:

a) It shall be compatible with all materials used in the test item, as well as with the working liquid of the final system. It should also be compatible with the test equipment, including seals and filters.

b) It shall have a viscosity of <= 5 mm2 /s at the test temperature.

c) It shall have a contamination level sufficiently low to minimize its contribution to the total measured test item's contamination. If different specifications are not agreed upon between the involved parties, the test liquid contamination level is sufficiently low when the contaminant present in a test liquid volume equal to V C is less than 10 % of the SCL, in each size class. When the SCL. is not specified, test liquid contamination shall not exceed in any size range the limit number of particles per 100 ml given in Table 1 (limits are cumulative: all particles over the given size are recorded).