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JB/T 7491-2014Molybdenum Disilicide Protection Tube for Thermocouples (English PDF)

热电偶用二硅化钼保护管

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Issued by

MIIT

Level / Type

Industry · Recommended

Issue date

July 9, 2014

Implementation date

November 1, 2014

Scope

JB/T 7491-2014 is the English-translated version of 热电偶用二硅化钼保护管.

JB/T 7491-2014 is a recommended Chinese machinery industry standard covering molybdenum disilicide protection tubes for thermocouples. It states the technical requirements for these tubes, the test methods, the inspection rules and the provisions for packaging and labelling.

The tubes it addresses are those used in oxidising, reducing, and alternately oxidising and reducing atmospheres, where a sheath must protect the thermocouple. Sampling and inspection follow GB/T 2828.1 and GB/T 2829.

The standard carries Chinese classification N11 and ICS 17.200.20. It replaces JB/T 7491-1994. Issued on 9 July 2014, it has applied since 1 November 2014.

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Document preview — JB/T 7491-2014

National Standard of the People's Republic of China

ICS: 17.200.20
Replacing: JB/T 7491-1994

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

1 Scope
2 Normative references

1 Foreword

JB/T 7491-2014 was issued by MIIT on 9 July 2014 and has been in force since 1 November 2014.

It replaces the earlier edition JB/T 7491-1994.

2 Scope

This standard is a recommended Chinese machinery industry standard covering molybdenum disilicide protection tubes for thermocouples. It states the technical requirements for these tubes, the test methods, the inspection rules and the provisions for packaging and labelling. The tubes it addresses are those used in oxidising, reducing, and alternately oxidising and reducing atmospheres, where a sheath must protect the thermocouple. Sampling and inspection follow GB/T 2828.1 and GB/T 2829. The standard carries Chinese classification N11 and ICS 17.200.20. It replaces JB/T 7491-1994.

3 Normative references

JB/T 7491-2014 cites the following standards, which apply in full or in part through the references made to them in its clauses.

GB/T 2828.1

GB/T 2829

4 About this standard

Issued by: MIIT

English translation: about 15 pages

5 Related standards

Other editions:

JB/T 7491-1994 (earlier edition)

6 Classification and status

International classification (ICS): 17.200.20

Prefix JB/T: recommended standard.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

Similar standards

GB/T 43301-2023|JB/T 8340-2013

Editions of JB/T 7491

Edition	Title	Revision	Status
JB/T 7491-2014	Molybdenum Disilicide Protection Tube for Thermocouples	current edition	Current
JB/T 7491-1994	Molybdenum Disilicide Protection Tube for Thermocouples	previous edition	Superseded

This page sells the current edition, JB/T 7491-2014. Earlier editions are listed for reference only.

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