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BS EN ISO 4373:2022

BS EN ISO 4373:2022

$154.14

Hydrometry. Water level measuring devices

Published By Publication Date Number of Pages
BSI 2022 36
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This document specifies the functional requirements of instrumentation for measuring the level of water surface (stage), primarily for the purpose of determining flow rates. This document is supplemented by Annex A, which provides guidance on the types of automatic water level measurement devices currently available and the measurement uncertainty associated with them. The manually operated measuring devices are described in Annex B. This document is applicable to both contact and non-contact methods of measurement. The non-contact methods are not in direct material contact with the water surface but measure the height of the water level with ultrasonic or electromagnetic waves.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 European foreword
Endorsement notice
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
4 Instrument specification
4.1 Performance parameters
4.2 Performance classification
11 4.3 Maximum rate of change
4.4 Environment
4.4.1 General
4.4.2 Temperature
4.4.3 Relative humidity
4.5 Timing
4.5.1 General
12 4.5.2 Digital
4.5.3 Analogue
5 Recording
5.1 General
5.2 Chart recorders
5.3 Data loggers
6 Enclosure
13 7 Installation
8 Maintenance
9 Estimation of measurement uncertainty
9.1 General
14 9.2 Type A uncertainty estimation
9.3 Type B uncertainty estimation
15 9.4 Uncertainty in case of low water level conditions
9.5 Level measurement datum
9.6 Combining primary measurement uncertainties
16 Annex A (informative) Types of water level measuring devices
30 Annex B (informative) Manually operated measuring devices
33 Annex C (informative) Recording devices
35 Bibliography

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BS EN ISO 4373:2022
$154.14