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 Version)
Hydraulic fluid power - Hose and hose assemblies - Method of collecting a fluid sample for analyzing the cleanliness of a hose or hose assembly
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
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
3.1
hose cleanliness level
hose assembly cleanliness level
SCL
cleanliness level of a hydraulic fluid power hose or hose assembly with regards to solid particulate contamination
Note: This may consist of a set of numbers of contaminant particles per 100 ml in each particle size class of interest or any other cleanliness level code agreed upon.
3.2
contaminant
loose or detachable solid material present in a hose or hose assembly or on a wetted surface of a hose or hose assembly
3.3
controlled surface
AC
wetted surface of a part or component that is subject to a cleanliness requirement
Note: For the purposes of this document, AC represents the nominal surface area of the test item that is exposed to system liquid.
3.4
controlled volume
VC
volume of a part or component that is subject to a cleanliness requirement
Note: For the purposes of this document, VC represents the nominal internal volume of the test item that the system liquid will occupy during normal end use.
3.5
external surfaces
those surfaces that will not be in contact with the system liquid during normal operation of the hose assembly
3.6
nominal inside diameter
dint
nominal inside diameter of the hose
Note: This is to be considered a dimensional quantity for calculation purposes in accordance with Annex B.
3.7
nominal length of the test item
L
nominal length of the hose or hose assembly whose cleanliness shall be analysed
Note: This is to be considered a dimensional quantity for calculation purposes in accordance with Annex B.
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).
Standard
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 Version)
Standard No.
GB/Z 43482-2023
Status
valid
Language
English
File Format
PDF
Word Count
10500 words
Price(USD)
315.0
Implemented on
2024-7-1
Delivery
via email in 1~3 business day
Detail of GB/Z 43482-2023
Standard No.
GB/Z 43482-2023
English Name
Hydraulic fluid power—Hose and hose assemblies—Method of collecting a fluid sample for analyzing the cleanliness of a hose or hose assembly
Hydraulic fluid power - Hose and hose assemblies - Method of collecting a fluid sample for analyzing the cleanliness of a hose or hose assembly
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
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
3.1
hose cleanliness level
hose assembly cleanliness level
SCL
cleanliness level of a hydraulic fluid power hose or hose assembly with regards to solid particulate contamination
Note: This may consist of a set of numbers of contaminant particles per 100 ml in each particle size class of interest or any other cleanliness level code agreed upon.
3.2
contaminant
loose or detachable solid material present in a hose or hose assembly or on a wetted surface of a hose or hose assembly
3.3
controlled surface
AC
wetted surface of a part or component that is subject to a cleanliness requirement
Note: For the purposes of this document, AC represents the nominal surface area of the test item that is exposed to system liquid.
3.4
controlled volume
VC
volume of a part or component that is subject to a cleanliness requirement
Note: For the purposes of this document, VC represents the nominal internal volume of the test item that the system liquid will occupy during normal end use.
3.5
external surfaces
those surfaces that will not be in contact with the system liquid during normal operation of the hose assembly
3.6
nominal inside diameter
dint
nominal inside diameter of the hose
Note: This is to be considered a dimensional quantity for calculation purposes in accordance with Annex B.
3.7
nominal length of the test item
L
nominal length of the hose or hose assembly whose cleanliness shall be analysed
Note: This is to be considered a dimensional quantity for calculation purposes in accordance with Annex B.
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).
