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GB/T 40336-2021Non-destructive testing - Leak testing - Calibration of reference leaks for gases (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

May 21, 2021

Implementation date

December 1, 2021

Scope

GB/T 40336-2021 (Non-destructive testing - Leak testing - Calibration of reference leaks for gases) is available as an English-translated PDF.

GB/T 40336-2021 is the Chinese standard "Non-destructive testing - Leak testing - Calibration of reference leaks for gases". Its scope clause reads: This document specifies two types of calibration methods for leaks used when adjusting the leak detector to determine the leak rate.

One is to compare with the reference leak. Calibration, the other is to calibrate directly by measuring or calculating the gas pressure with a known volume. This document applies to the calibration of leaks with leak rates within the range shown in Figure 1. a) Comparison calibration b) Volume calibration Normal range; possible range.

Indexing serial number description. X --- Leak rate, in Pascal cubic meters per second (Pa·m3/s); A ---Method A; B ---Method B; AS---Method AS; BS---Method BS; C ---Method C; D ---Method D; E --- Method E; F ---Method F; G ---Method G. Figure 1 Calibration range.

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Document preview — GB/T 40336-2021

National Standard of the People's Republic of China

Classification: J 04

Issued by: State Administration for Market Regulation, China National Standardization Administration

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Nominal leak rate
5 Classification of leaks
6 Comparison calibration
7 Volume calibration
8 Overall impact
9 Report
10 Reference leak label
11 Reference leak operation
References

1 Scope

This document specifies two types of calibration methods for leaks used when adjusting the leak detector to determine the leak rate. One is to compare with the reference leak.

Calibration, the other is to calibrate directly by measuring or calculating the gas pressure with a known volume.

This document applies to the calibration of leaks with leak rates within the range shown in Figure 1.

a) Comparison calibration b) Volume calibration

Normal range; possible range.

Indexing serial number description.

X --- Leak rate, in Pascal cubic meters per second (Pa·m3/s);

A ---Method A;

B ---Method B;

AS---Method AS;

BS---Method BS;

C ---Method C;

D ---Method D;

E --- Method E;

F ---Method F;

G ---Method G.

Figure 1 Calibration range

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations

Only the version corresponding to that date is applicable to this document. For undated reference documents, the latest version (including all amendments) applies to

This document.

GB/T 12604.7 Non-destructive testing terminology leak detection (GB/T 12604.7-2021, ISO 20484.2017, MOD)

GB/T 41105.1 | GB/T 40727 | GB/T 40117 | GB/T 40335 | GB/T 40332 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 51 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 20484.2017

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