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JJF 1623-2017Program of Pattern Evaluation of Thermal Mass Gas Flowmeters (English PDF)

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine

Level / Type

National · Mandatory

Issue date

February 28, 2017

Implementation date

May 28, 2017

Scope

JJF 1623-2017 (Program of Pattern Evaluation of Thermal Mass Gas Flowmeters) is available as an English-translated PDF.

JJF 1623-2017 — This standard applies to the type of code for the 12183500 thermal gas mass flow meter (hereinafter referred to as flow meter) type evaluation.

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Document preview — JJF 1623-2017

National Standard of the People's Republic of China

ICS: 17.120
Classification: A 54

Issued by: General Administration of Quality Supervision, Inspection and Quarantine

Introduction (III)
1 Scope (1)
2 References (1)
3 Terminology (1)
4 Overview (1)
4.1 Use (1)
4.2 Working principle (2)
4.3 Structure and classification (2)
5 Legal management requirements (2)
5.1 Unit of measurement (2)
5.2 External structural design (2)
5.3 Logo (2)
6 Measurement requirements (2)
6.1 Accuracy class and maximum allowable error (2)
6.2 Reference error (3)
6.3 Repeatability (3)
7 General technical requirements (3)
7.1 Sealability (3)
7.2 Compressive strength (3)
7.3 Insulation resistance (3)
7.4 Insulation strength (3)
7.5 Explosion-proof performance (3)
7.6 Housing protection performance (3)
7.7 Storage Environment (4)
7.8 Electromagnetic Compatibility Adaptability (4)
8 Type evaluation item table (5)
9 To provide the number of prototype and prototype use (5)
9.1 Test Specimen to be provided by the applicant unit (5)
9.2 Prototype Usage (5)

1 Scope (1)

2 References (1)

3 Terminology (1)

4 Overview (1)

4.1 Use (1)

4.2 Working principle (2)

4.3 Structure and classification (2)

5 Legal management requirements (2)

5.1 Unit of measurement (2)

5.2 External structural design (2)

5.3 Logo (2)

6 Measurement requirements (2)

6.1 Accuracy class and maximum allowable error (2)

6.2 Reference error (3)

6.3 Repeatability (3)

7 General technical requirements (3)

7.1 Sealability (3)

7.2 Compressive strength (3)

7.3 Insulation resistance (3)

7.4 Insulation strength (3)

7.5 Explosion-proof performance (3)

7.6 Housing protection performance (3)

7.7 Storage Environment (4)

7.8 Electromagnetic Compatibility Adaptability (4)

8 Type evaluation item table (5)

9 to provide the number of prototype and prototype use (5)

9.1 Test Specimen to be provided by the applicant unit (5)

9.2 Prototype Usage (5)

Conditions and Methods for Type 10 Evaluation (6)

10.1 Measurement performance test (6)

10.2 Sealability test (9)

10.3 Compressive strength (9)

10.4 Insulation resistance (10)

10.5 Insulation strength (10)

10.6 Shell Protection Performance (11)

10.7 Storage Environment (11)

10.8 Electromagnetic Compatibility Adaptability (12)

11 Measuring instruments and equipment for test items (15)

Appendix A Thermal Gas Mass Flowmeter Type Evaluation Original Record Format (Reference) (16)

Introduction

According to the type of hot gas mass flow meter evaluation work needs to develop this type of evaluation outline.

Follow the scientific, operational principles of the development, according to JJF 1015-2014 "measuring instrument type evaluation of general rules Fan ", JJF 1016-2014" measuring instrument type evaluation outline preparation guidelines "requirements, according to GB/T 2423.1 "Environmental testing of electric and electronic products Part 2 Test method test A low temperature", GB/T 2423.2 "Electrician Electronic products - Environmental testing - Part 2. Test methods - Test B - High temperature, GB/T 2423.3, "Electrical and electronic Product Environmental Test Part 2 Test Method Test Cab. Constant Damp Heat Test ", GB/T 2423.10" Electrotechnical Environmental testing of electronic products - Part 2. Test methods - Test Fc. Vibration (sinusoidal), GB/T 17626.2 "Electromagnetic compatibility test and measurement technology Electrostatic discharge immunity test", GB/T 17626.3 "Electromagnetic compatibility test Test and measurement technology radio frequency electromagnetic radiation immunity test ", GB/T 17626.4" electromagnetic compatibility test and measurement Technical fast transient burst immunity test ", GB/T 17626.5" Electromagnetic compatibility test and measurement technology Surge (impact) immunity test ", GB/T 17626.11" electromagnetic compatibility test and measurement technology voltage sag, Short-term interruption and voltage changes in the immunity test ", combined with China's thermal gas mass flow meter technology and industry Status quo.

This specification is the first release.

Evaluation Outline of Hot Gas Mass Flowmeter Type

1 Scope

This type of evaluation outline for classification code for the 12183500 thermal gas mass flow meter (hereinafter referred to as the flow the type of evaluation).

2 reference file

This specification refers to the following documents.

JJG1132-2017 thermal gas mass flowmeter GB/T 2423.1 Environmental testing for electric and electronic products - Part 2. Test methods - Test A low temperature GB/T 2423.2 Environmental testing for electric and electronic products - Part 2. Test methods - Test GB/T 2423.3 Environmental testing for electric and electronic products - Part 2. Test methods - Test Cab. constant humidity Thermal test GB/T 2423.10 Environmental testing for electric and electronic products - Part 2. Test methods - Test Fc. Vibration (Sine) GB 4208 enclosure protection class (IP code) GB/T 15479 Industrial automation instrumentation Insulation resistance, dielectric strength Technical requirements and test methods Electromagnetic compatibility - Test and measurement techniques - Electrostatic discharge immunity test GB/T Electromagnetic compatibility - Testing and measurement techniques - Radiofrequency electromagnetic field radiation immunity test GB/T GB/T 17626.4 Electromagnetic compatibility test and measurement techniques Electrical fast transient burst immunity test GB/T 17626.5 Electromagnetic compatibility test and measurement technology Surge (impact) immunity test GB/T 17626.11 Electromagnetic compatibility test and measurement technology Voltage sags, short interruptions and voltage variations Immunity test for dated references, only the dated edition applies to this specification; references that are not dated , The latest version (including all modifications) applies to this specification.

3 terminology

In addition to the terms and definitions of JJF 1004, this specification uses the following terms.

3.1 thermal gas mass flowmeter thermalmassgasflowmeters Measurement of mass flow using the principle of heat transfer.

3.2 standard volume flow normalized volumetricflowrate 20 °C, 101.325kPa state of the volume flow.

4 Overview

4.1 Use

Flowmeter for air, gas and other gas flow measurement.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.

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