GB/T 42567.4-2025 English PDF

US$1154.00 · In stock
Delivery: <= 8 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 42567.4-2025: Reference conditions and procedures for testing industrial and process measurement transmitters - Part 4: Specific procedures for level transmitters
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 42567.4-2025	1154	Add to Cart	8 days	Reference conditions and procedures for testing industrial and process measurement transmitters - Part 4: Specific procedures for level transmitters	Valid

Similar standards

GB/T 41251   GB/T 32828   DL/T 680   GB/T 42567.5   GB/T 42567.2   GB/T 42567.3   

Basic data

Standard ID: GB/T 42567.4-2025 (GB/T42567.4-2025)
Description (Translated English): Reference conditions and procedures for testing industrial and process measurement transmitters - Part 4: Specific procedures for level transmitters
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: N18
Classification of International Standard: 25.040
Word Count Estimation: 58,562
Date of Issue: 2025-01-24
Date of Implementation: 2025-08-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 42567.4-2025: Reference conditions and procedures for testing industrial and process measurement transmitters - Part 4: Specific procedures for level transmitters

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 25.040 CCSN18 National Standard of the People's Republic of China Reference conditions and test conditions for industrial process measurement transmitters Procedures Part 4.Specific procedures for level transmitters (IEC 62828-4.2020,IDT) Released on 2025-01-24 2025-08-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface V Introduction VI 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 3.1 Basic Definition 2 3.2 Definition of level transmitter 3 3.2.2 Definition of pressure-based level transmitter 3 3.2.4 Definition of float level transmitter 4 3.2.6 Definition of microwave/radar level transmitter 4 3.2.7 Definition of optical level transmitter 4 3.2.9 Definition of Capacitance and Admittance Level Transmitters 5 3.2.10 Definition of mechanical level transmitter 5 3.2.11 Definition of resistance level transmitter 5 3.3 Measurement parameters 5 3.4 Definition of influence quantity 6 3.5 Reference to the Common Data Dictionary (CDD) 6 4 Overview of the main level transmitter types 7 4.1 Overview 7 4.2 Pressure-based level transmitters 7 4.3 Microwave/radar level transmitter 10 4.3.1 Overview 10 4.3.2 Free space radar level transmitter 10 4.3.3 Guided wave radar level transmitter 11 5 Reference test conditions 12 5.1 Overview 12 5.2 Standard reference test conditions 12 5.2.1 Overview 12 5.2.2 Environmental test conditions 12 5.2.3 Power supply conditions 13 5.2.4 Load conditions 13 5.2.5 Test installation location 13 5.3 Reference test conditions for environmental and process influencing quantities 13 5.3.1 General 13 5.3.2 Process conditions 14 5.3.3 Ambient atmospheric conditions 14 5.3.4 Mechanical vibration 14 5.3.5 Impact, drop and tipping 15 5.3.6 Power supply 15 5.3.7 Electromagnetic compatibility (EMC) 15 5.4 Reference design criteria 15 5.4.1 Overview 15 5.4.2 Enclosure protection against solid objects, liquids (IP) and impacts (IK) 15 5.4.3 Protection of enclosures against corrosion and erosion 15 5.4.4 Electrical safety (insulation resistance, dielectric strength) 15 5.4.5 Hazardous environment (for explosive environment) 15 5.4.6 Functional safety 15 6 Test Procedure 15 6.1 General requirements 15 6.1.1 General 15 6.1.2 Specific test setup and procedures 16 6.2 Type test under standard reference test conditions 19 6.2.1 General 19 6.2.2 Accuracy and related factors 19 6.2.3 Static characteristics 20 6.2.4 Dynamic characteristics 21 6.3 Type test under working reference test conditions 21 6.3.1 General 21 6.3.2 Impact of ambient temperature 21 6.3.3 Effect of relative humidity 21 6.3.4 Impact of vibration 22 6.3.5 Impact, drop and tipping 22 6.3.6 Accelerated life test 22 6.3.7 EMC test 22 6.3.8 Attachment test procedure 22 6.3.9 Additional tests for digital transmitters 22 6.4 Routine test 22 6.5 Acceptance, integration, periodic and maintenance testing 22 6.5.1 Overview 22 6.5.2 Periodic verification 22 6.5.3 Periodic calibration 22 7 Test reports and technical documents 22 7.1 Test report 22 7.2 Technical Documentation 22 7.3 Total Probability Error (TPE) 23 7.3.1 Overview 23 7.3.2 Specific error 23 Appendix A (Informative) Main characteristics of level transmitter 24 A.1 Characteristics of level transmitters 24 A.1.1 Overview 24 A.1.2 Pressure-based level transmitters 24 A.1.3 Microwave/radar level transmitter 27 A.2 Product attributes 33 A.2.1 Attribute library used in device class 33 A.2.2 Attribute value list 39 Appendix B (informative) Example of TPE calculation based on 7.3 and MRU and MRE 41 B.1 Overview of parameters used for error calculation 41 B.2 Example of a test report for a pressure-based level transmitter 41 B.2.1 Overview 41 B.2.2 Test protocol 41 B.2.3 DUT characteristics 41 B.2.4 TPE calculation 42 B.2.5 MRU calculation 43 B.3 Subtest process 43 B.3.1 Inaccuracy test 43 B.3.2 Ambient temperature effect test 45 B.3.3 Process temperature effect test 46 B.3.4 Long-term stability test 47 References 49 Figure 1 Schematic diagram of time value and its meaning 2 Figure 2 Principle of pressure-based level transmitter 8 Figure 3 Free space radar level transmitter 11 Figure 4 Guided wave radar level transmitter 12 Figure 5 Schematic diagram of the pressure PMT (transmitter) test setup 16 Figure 6 Typical test setup for radar level transmitter 17 Figure 7 Experimental configuration for simulating targets and environments 18 Figure 8 Example of test configuration for wet test 18 Table 1 Environmental test conditions 13 Table 2 Influence of various level measurement principles 13 Table 3 Number of test cycles, number of test points and test points16 Table 4 Example of maximum error statement 20 Table A.1 Pressure-based level transmitter 24 Table A.2 Free space radar level transmitter 27 Table A.3 Guided wave radar level transmitter 30 Table A.4 Attribute library used in device class 33 Table A.5 Attribute value list 39 Table B.1 Abbreviations 41 Table B.2 DUT characteristics 41 Table B.3 TPE calculation 42 Table B.4 MRU calculation 43 Table B.5 Reference test equipment for inaccuracy test 44 Table B.6 Reference test conditions for inaccuracy test 44 Table B.7 Test results of inaccuracy test 44 Table B.8 Reference test equipment for ambient temperature influence test 45 Table B.9 Reference test conditions for ambient temperature effect test 45 Table B.10 Test results of ambient temperature effect test 46 Table B.11 Reference test equipment for process temperature effect test 46 Table B.12 Reference test conditions for process temperature effect test 47 Table B.13 Test results of process temperature effect test 47 Table B.14 Reference test equipment for long-term stability test 47 Table B.15 Reference test conditions for long-term stability test 48 Table B.16 Test results of long-term stability test 48

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document is part 4 of GB/T 42567 "Reference conditions and procedures for testing industrial process measurement transmitters". The following parts have been published. --- Part 1.Common procedures for all types of transmitters; --- Part 2.Specific procedures for pressure transmitters; --- Part 3.Specific procedures for temperature transmitters; --- Part 4.Specific procedures for level transmitters; --- Part 5.Specific procedures for flow transmitters. This document is equivalent to IEC 62828-4.2020 "Reference conditions and procedures for testing industrial process measurement transmitters Part 4.Level Transmitter Specific Procedures. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Machinery Industry Federation. This document is under the jurisdiction of the National Technical Committee for Standardization of Industrial Process Measurement, Control and Automation (SAC/TC124). This document was drafted by. Zhejiang Zhongkong Automation Instrument Co., Ltd., Xiamen Anton Electronics Co., Ltd., Hangzhou Automation Technology Research Institute Wang Shixing, Zhou Liang, Zhang Tongjun, Zhang Shuai, Tang Xuan, Chen Zhaolin, Zhu Hui, Yuan Zhonghua, Wu Shiming, Chen Can, Liu Feng, Zhang Xinguo, Zhang Hengru, Zhang Yu, Yang Yang, Zhang Geng, Wang Chao, Xiang Yanpeng, Xiong Yihe, and Zhu Yinzhu.

Introduction

Most of the current standards for industrial process measurement transmitters are relatively old and are based on analog transmitters. Many industrial process measurement transmitters are also evolving and are very different from analog transmitters. they are usually digital and have a (mainly digital electronic circuits) and the measurement part (mainly mechanical structure), both include more functions and newer interfaces. There are some standards related to digital transmitters for process measurements, but suitable test methods for some performance aspects are still lacking. The existing test standards for industrial process measurement transmitters are scattered documents, so it is difficult for manufacturers and users to identify and select It is difficult, impractical and time consuming to select all transmitter standards for measuring a specific process quantity (pressure, temperature, flow, level, etc.). In order to solve the above problems and better serve manufacturers and users, the GB/T 42567 series of standards is designed to provide different types of industrial processes. The test method is systematically provided for the process measurement transmitter, which is composed of the following five parts. --- Part 1.Common procedures for all types of transmitters. The purpose is to provide All types of transmitters used provide reference conditions and a procedural framework for the tests. --- Part 2.Specific procedures for pressure transmitters. Intended for use in measurement and control systems in industrial processes and machinery The pressure transmitter provides reference conditions and procedures for specific tests. --- Part 3.Specific procedures for temperature transmitters. Intended for use in measurement and control systems in industrial processes and machinery The temperature transmitter provides reference conditions and procedures for specific tests. --- Part 4.Specific procedures for level transmitters. Intended for use in measurement and control systems in industrial processes and machinery The level transmitter provides specific test reference conditions and procedures. --- Part 5.Specific procedures for flow transmitters. Intended for use in measurement and control systems in industrial processes and machinery The flow transmitter provides reference conditions and procedures for specific tests. In the process of formulating the GB/T 42567 series of standards, GB/T 18271 "General performance evaluation of process measurement and control equipment" was adopted. Many test procedures in the "Standardized Methods and Procedures" were revised and necessary improvements were made. Reference conditions and test conditions for industrial process measurement transmitters Procedures Part 4.Specific procedures for level transmitters

1 Scope

This document specifies specific test specifications for process level transmitters used in measurement and control systems in industrial processes and machine control systems. For general test procedures, please refer to GB/T 42567.1-2023, which is applicable to all types of industrial process measurement transmitters. In this document, the term "industrial transmitter" covers all types of transmitters used in measurement and control systems of industrial processes and machinery. Transmitter. The requirements of this document apply to all level measurement principles. This document gives a detailed description of level transmitters with two main measuring principles.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 2423.5-2019 Environmental testing Part 2.Test method Test Ea and guidance. Shock (IEC 60068-2-27.2008, IDT) GB/T 2423.10-2019 Environmental testing Part 2.Test method Test Fc. Vibration (sinusoidal) (IEC 60068-2-6.2007, IDT) GB/T 2423.56-2023 Environmental testing Part 2.Test method Test Fh. Broadband random vibration and guidance (IEC 60068-2- 64.2019,IDT) GB/T 42567.1-2023 Reference conditions and procedures for testing industrial process measurement transmitters Part 1.All types of transmitters Common procedures (IEC 62828-1.2017, IDT) GB/T 42567.2-2023 Reference conditions and procedures for testing industrial process measurement transmitters Part 2.Characteristics of pressure transmitters Specific procedures (IEC 62828-2.2017, IDT) IEC 61326-2-3.2012 Electromagnetic compatibility requirements for electrical equipment for measurement, control and laboratory use Part 2-3.Particular requirements signalconditioning) Note. GB/T 18268.23-2010 Electromagnetic compatibility requirements for electrical equipment for measurement, control and laboratory use Part 23.Special requirements for integrated or Test configuration, operating conditions and performance criteria for remote signal conditioning transmitters (IEC 61326-2-3.2006, IDT)

3 Terms and definitions

The terms and definitions defined in GB/T 42567.1-2023 and the following apply to this document. The URLs for terminology databases used for standardization maintained by ISO and IEC are as follows. ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 42567.4-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 42567.4-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 5 ~ 8 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 42567.4-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 42567.4-2025_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.