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BS EN IEC 62828-4:2020

BS EN IEC 62828-4:2020

$198.66

Reference conditions and procedures for testing industrial and process measurement transmitters – Specific procedures for level transmitters

Published By Publication Date Number of Pages
BSI 2020 64
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IEC 62828-4:2020 establishes specific procedures for testing level transmitters used in measuring and control systems for industrial process and machinery control systems. For general test procedures, reference is to be made to IEC 62828-1:2017, applicable to all types of transmitters. Throughout this document, the term “industrial transmitters” covers all types of transmitters used in measuring and control systems for industrial processes and for machinery. The requirements of this document are applicable to all level measurement principles. Detailed description of transmitters is given for two main principles for improved clarity.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
7 English
CONTENTS
10 FOREWORD
12 INTRODUCTION
13 1 Scope
2 Normative references
3 Terms and definitions
14 3.1 Basic definitions
15 Figures
Figure 1 ā€“ Principle diagram of time values and their meanings
16 3.2 Level transmitter definitions
3.2.2 Pressure-based level transmitter definitions
17 3.2.4 Float level transmitter definitions
3.2.6 Microwave/Radar level transmitter definitions
3.2.7 Optical based level transmitter definitions
18 3.2.9 Capacitance and admittance level transmitter definitions
3.2.10 Mechanical level transmitter definitions
19 3.2.11 Electrical resistance level transmitter definitions
3.3 Measurement parameters
3.4 Influence quantity definitions
20 3.5 Reference to the IEC common data dictionary (CDD)
21 4 General description of main types of level transmitters
4.1 General
4.2 Pressure-based level transmitters
23 4.3 Microwave/radar level transmitter
4.3.1 General
4.3.2 Free-space radar level transmitter
Figure 2 ā€“ Principles of pressure-based level transmitters
24 4.3.3 Guided-wave radar level transmitter
Figure 3 ā€“ Free-space radar level transmitter
25 5 Reference test conditions
5.1 General
5.2 Standard reference test conditions
5.2.1 General
5.2.2 Environmental test conditions
Figure 4 ā€“ Guided-wave radar level transmitter
26 5.2.3 Power supply conditions
5.2.4 Load conditions
5.2.5 Mounting positions for testing
5.3 Reference test conditions for ambient and process quantities influencing operation
5.3.1 General
Tables
Table 1 ā€“ Environmental test conditions
27 5.3.2 Process conditions
5.3.3 Environmental atmospheric conditions
Table 2 ā€“ Influence quantities for the various level measurement principles
28 5.3.4 Mechanical vibration
5.3.5 Shock, drop and topple
5.3.6 Power supply
5.3.7 Electromagnetic compatibility (EMC)
5.4 Reference design criteria
5.4.1 General
5.4.2 Enclosure protection against solid, liquid (IP) and impact (IK)
5.4.3 Enclosure protection against corrosive and erosive influences
29 5.4.4 Electrical safety (insulation resistance, dielectric strength)
5.4.5 Hazardous environment (for application in explosive atmosphere)
5.4.6 Functional safety
6 Test procedures
6.1 General
6.1.1 Overview
Table 3 ā€“ Number of measurement cycles and number and position of test points
30 6.1.2 Specific test setups and procedures
Figure 5 ā€“ Schematic example of a test set-up for pressure PMT
31 Figure 6 ā€“ Typical test set-up for radar level transmitter
32 Figure 7 ā€“Test setup simulated targets and simulated environment
33 6.2 Type tests at standard reference conditions
6.2.1 General
Figure 8 ā€“ Example of test setup for wet test
34 6.2.2 Accuracy and related factors
Table 4 ā€“ Example of statement of maximum error
35 6.2.3 Static behaviour
36 6.2.4 Dynamic behaviour
6.3 Type tests at operating reference test conditions
6.3.1 General
6.3.2 Ambient temperature effects
37 6.3.3 Ambient relative humidity effects
6.3.4 Vibration effects
6.3.5 Shock, drop and topple
6.3.6 Accelerated operational life test
6.3.7 EMC tests
6.3.8 Further test procedures
6.3.9 Additional test for digital transmitters
6.4 Routine tests
6.5 Acceptance, integration, periodic and maintenance tests
6.5.1 General
6.5.2 Periodical verification
6.5.3 Periodical calibration
7 Test report and technical documentation
7.1 Test report
38 7.2 Technical documentation
7.3 Total probable error TPE
7.3.1 General
7.3.2 Specific errors
39 Annex A (informative)Main characteristics for level transmitters
A.1 Properties of level transmitter classes
A.1.1 General
A.1.2 Pressure-based level transmitter
Table A.1 ā€“ Pressure-based level transmitter
41 A.1.3 Microwave/Radar level transmitter
42 Table A.2 ā€“ Free-space radar level transmitter
44 Table A.3 ā€“ Guided-wave radar level transmitter
47 A.2 Product properties
A.2.1 Library of properties used in the device classes
Table A.4 ā€“ Library of properties used in the device classes
51 A.2.2 Value lists of properties
52 Table A.5 ā€“ Value lists of properties
53 Annex B (informative)Example for the calculation of the TPE based on 7.3 and the MRU and MRE
B.1 Overview of the parameters used for the error calculation
B.2 Example test report pressure-based level transmitter
B.2.1 General
B.2.2 Test protocol
B.2.3 DUT characteristics
Table B.1 ā€“ Abbreviated terms
54 B.2.4 TPE calculation
Table B.2 ā€“ DUT characteristics
Table B.3 ā€“ TPE calculation
55 B.2.5 MRU calculation
Table B.4 ā€“ MRU calculation
56 B.3 Sub test processes
B.3.1 Inaccuracy test
Table B.5 ā€“ Reference test devices
Table B.6 ā€“ Reference test conditions
57 B.3.2 Ambient temperature effect test
Table B.7 ā€“ Test results
Table B.8 ā€“ Reference test equipment
58 B.3.3 Process temperature effect test
Table B.9 ā€“ Reference test conditions
Table B.10 ā€“ Test results
Table B.11 ā€“ Reference test equipment
59 B.3.4 Long-term stability test
Table B.12 ā€“ Reference test conditions
Table B.13 ā€“ Test results
60 Table B.14 ā€“ Reference test equipment
Table B.15 ā€“ Reference test conditions
Table B.16 ā€“ Test results
61 Bibliography

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