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BS EN 62828-2:2018

BS EN 62828-2:2018

$142.49

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

Published By Publication Date Number of Pages
BSI 2018 30
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PDF Catalog

PDF Pages PDF Title
2 undefined
7 English
CONTENTS
9 FOREWORD
11 INTRODUCTION
12 1 Scope
2 Normative references
3 Terms and definitions
3.1 General
13 Figures
Figure 1 – Measuring range and associated properties of a pressure PMT
14 3.2 Terms related the process conditions
4 General description of the device and overview
5 Reference test conditions
15 6 Test procedures
6.1 General
6.2 Tests at standard and operating reference test conditions
6.2.1 General
6.2.2 Accuracy test suitable for routine and acceptance tests
Figure 2 – Schematic example of a test set-up for pressure PMT
16 6.2.3 Overpressure
Figure 3 – Example of measured error plot
Tables
Table 1 – Example of measured errors
17 Figure 4 – Procedure for the determination of the unilateral overpressure error
18 6.2.4 Influence of static pressure
Figure 5 – Schematic example of test set-up for determinethe effect of the static pressure
19 Figure 6 – Procedure for the determination of the zero point error with static pressure
20 6.2.5 Long-term drift
Figure 7 – Procedure for the determination of the span error for static pressure
21 6.2.6 Leakage test
6.2.7 Additional tests for diaphragm/remote seals – Influence of process temperature (long term)
7 Test report and technical documentation
7.1 General
22 7.2 Total probable error
23 Annex A (informative)Relationship between the SI unit and other pressure related units
Table A.1 – Relationship between the SI unit and other pressure related units
24 Annex B (informative)Pressure process measurement transmitter (PMT)
B.1 General description of a pressure PMT
B.2 Typical PMTs
25 Figure B.1 – Schematic example of intelligent PMT model
26 Annex C (informative)Example of signal current range for a 4 to 20 mA PMT
C.1 Signal current range of a 4 mA to 20 mA transmitter (before adjustment)
C.2 Proportional range
C.3 Normal range
C.4 Underrange
Figure C.1 – Signal current range of a 4 mA – 20 mA transmitter (before adjustment)
27 C.5 Overrange
C.6 Low alarm
C.7 High alarm
28 Bibliography

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BS EN 62828-2:2018
$142.49