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GB/T 13277.1-2008 English PDF (GBT13277.1-2008)

GB/T 13277.1-2008 English PDF (GBT13277.1-2008)

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GB/T 13277.1-2008: Compressed air -- Part 1: Contaminants and purity classes

This part of GB/T13277 specifies the purity classes of particles, moisture and trace oil in compressed air. This part also considers microorganisms and gaseous contaminants.
GB/T 13277.1-2008
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 23.140
J 72
Partially replacing GB/T 13277-1991
Compressed air - Part 1: Contaminants and purity
classes
(ISO 8573-1:2001, MOD)
ISSUED ON: AUGUST 28, 2008
IMPLEMENTED ON: MARCH 01, 2009
Issued by: General Administration of Quality Supervision, Inspection and Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Testing of contaminants ... 6
5 Standard state ... 7
6 Contaminants ... 7
7 Purity class of compressed air ... 9
Foreword
GB/T 13277 "Compressed air" is divided into the following 9 parts:
- Part 1: Contaminants and purity classes;
- Part 2: Test methods for oil aerosol content;
- Part 3: Test methods for testing of humidity;
- Part 4: Test methods for solid particle content;
- Part 5: Test methods for oil vapor and organic solvent content;
- Part 6: Test methods for the content of gaseous contaminants;
- Part 7: Test methods for the content of active microorganisms;
- Part 8: Test methods for the mass concentration of solid particles;
- Part 9: Test methods for liquid water content.
This part is part 1 of GB/T 13277.
This part modifies and adopts ISO 8573-1:2001 "Compressed air - Part 1: Contaminants and purity classes" (English version).
This part was redrafted in accordance with ISO 8573-1:2001.
Considering the national conditions of China, this part made some modifications when adopting ISO 8573-1:2001. Relevant technical differences have been incorporated into the text, which are marked with vertical single lines in the margins of the clauses they involve.
For ease of use, this part also made the following editorial changes:
- CHANGE the word "this International Standard" to "this part";
- USE the decimal point ?€?.?€? to replace the comma ?€?,?€? which was used as the decimal point;
- USE the ?€?MPa?€? to replace ?€?bar?€? for pressure unit;
- DELETE the preface to ISO 8573-1:2001.
This part is a revision of the original GB/T 13277-1991 " Compressed air for general use - Quality classes".
Compressed air - Part 1: Contaminants and purity
classes
1 Scope
This part of GB/T13277 specifies the purity classes of particles, moisture and trace oil in compressed air.
This part also considers microorganisms and gaseous contaminants.
The gaseous contaminants referred in this part include: carbon monoxide, carbon dioxide, sulfur dioxide, nitrogen dioxide, nitric oxide, hydrocarbons with carbon atoms from C1 to C5.
Note: For some special applications (such as breathing, pharmaceutical, food and beverage air), it shall consider other contaminants.
2 Normative references
The provisions in following documents become the provisions of this part through reference in this part of GB/T 13277. For the dated references, the subsequent amendments (excluding corrections) or revisions do not apply to this part; however, parties who reach an agreement based on this part are encouraged to study if the latest versions of these documents are applicable. For undated references, the latest edition of the referenced document applies. GB/T 10893 Compressed air dryers - Specifications and testing 1) (GB/T
10893-1989, eqv ISO 7183:1986)
JB/T 7664 Purging for compressed air - Vocabulary
ISO 8573-2 Compressed air for general use - Part 2: Test methods for
aerosol oil content
ISO 8573-3 Compressed air - Part 3: Test methods for testing of humidity ISO 8573-4 Compressed air - Part 4: Test methods for solid particles
ISO 8573-5 Compressed air - Part 5: Test methods for oil vapor and organic solvent content
ISO 8573-6 Compressed air - Part 6: Test methods for gaseous contaminant content
ISO 8573-7 Compressed air - Part 7: Test method for viable microbiological content
ISO 8573-8 Compressed air - Part 8: Test methods solid for particle mass concentration
ISO 8573-9 Compressed air - Part 9: Test methods for liquid water content 3 Terms and definitions
The terms and definitions established in GB/T 108931) and JB/T 7664 are applicable to this part of GB/T 13277.
4 Testing of contaminants
In order to evaluate the purity class of contaminants in compressed air samples, it shall select the corresponding part from the ISO 8573 for the testing method: - Part 2: Test methods for aerosol oil content;
- Part 3: Test methods for testing of humidity;
- Part 4: Test methods for solid particles;
- Part 5: Test methods for oil vapor and organic solvent content;
- Part 6: Test methods for gaseous contaminant content;
- Part 7: Test method for viable microbiological content;
- Part 8: Test methods solid for particle mass concentration;
- Part 9: Test methods for liquid water content.
The testing shall follow the following rules:
- During the testing, it shall take sample multiple times over an appropriate period of time;
__________________________________
1) The standard will be revised. The revised standard number is GB/T 10893.1.

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