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GB/T 33907-2017Electrolytic solid moisture meter (English PDF)

电解法固体水分测量仪

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

July 12, 2017

Implementation date

February 1, 2018

Scope

GB/T 33907-2017 is the English-translated version of 电解法固体水分测量仪.

GB/T 33907-2017 is the Chinese national standard for the electrolytic solid moisture meter. It specifies the requirements for the instrument, the test methods, the inspection rules, and the provisions on marking, packaging, transport and storage.

The requirements cover the normal working conditions (ambient temperature 5 C to 35 C, relative humidity not above 80 %, supply of (220 +/- 22) V and (50 +/- 1) Hz, freedom from mechanical vibration and shock, and air free of corrosive gases), the appearance of the case, switches, buttons, fasteners, nameplates and markings, and the safety requirements, beginning with a contact current of not more than 0.5 mA under normal operating conditions.

It applies to instruments that measure the moisture content of solid samples by electrolysis; the samples are those that release their water at room temperature or on heating, and samples that release substances able to destroy the phosphorus pentoxide coating or the electrolysis cell, or polymers that take part in the electrolysis reaction, are outside the measuring conditions.

It cites GB/T 191, GB/T 2829, GB 4793.1, GB/T 11606 and GB/T 13384. It was issued on 12 July 2017 and has applied since 1 February 2018.

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Document preview — GB/T 33907-2017

National Standard of the People's Republic of China

ICS: 17.200.20
Classification: N 10

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative reference documents
3 Request

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This standard specifies the requirements of electrolytic solid moisture measuring instrument (hereinafter referred to as instrument), test methods, inspection rules, signs, packaging, transport Lose and store.

This standard is applicable to instruments that measure the moisture content of solid samples by electrolysis.

Note: This solid sample at room temperature or heating conditions can release the water, not included in the measurement conditions can release the destruction of phosphorus pentoxide coating and electrolysis A pool of cells, or a polymer that participates in the components of the electrolysis reaction.

2 Normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this document. For undated references, the latest edition (including all modifications) applies to this document.

GB/T 191-2008 packaging and storage icon

GB/T 2829-2002 Periodic inspection count Sampling procedures and tables (for inspection of process stability)

GB 4793.1-2007 Safety requirements for electrical equipment for measurement, control and laboratory use - Part 1: General requirements

GB/T 11606-2007 Environmental testing methods for analytical instruments

GB/T 13384-2008 General technical requirements for packaging of electromechanical products

3 Request

3.1 Normal working conditions

The instrument should function properly under the following conditions.

a) Ambient temperature. 5 ° C to 35 ° C;

b) relative humidity. <= 80%;

c) Power supply. (220 ± 22) V, (50 ± 1) Hz;

d) away from mechanical vibration and shock;

e) Non-corrosive gases in ambient air.

3.2 Appearance

The appearance of the instrument should meet the following requirements.

a) the surface of the instrument shell coating uniform color, no obvious damage, blistering, exposed at the end, corrosion and other phenomena;

b) the instrument on the switch, buttons, fasteners, etc. should be installed firmly, accurate positioning, flexible adjustment;

c) All nameplates and logos shall be durable and clear, and shall comply with the requirements of the relevant regulations and standards.

3.3 Safety requirements

3.3.1 Contact current

Under normal operating conditions, the contact current of the instrument should not be greater than 0.5mA.

......
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 11605-2026|GB/T 5977-2019|GB/T 19870-2018|GB/T 36010-2018|GB/T 36016-2018|GB/T 34035-2017

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