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BS EN ISO 4373:2022 – TC 2023

BS EN ISO 4373:2022 – TC 2023

$217.84

Tracked Changes. Hydrometry. Water level measuring devices

Published By Publication Date Number of Pages
BSI 2023 92
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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
57 undefined
59 European foreword
Endorsement notice
61 Foreword
62 Introduction
64 1 Scope
2 Normative references
3 Terms and definitions
4 Instrument specification
4.1 Performance parameters
4.2 Performance classification
66 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
67 4.5.2 Digital
4.5.3 Analogue
5 Recording
5.1 General
5.2 Chart recorders
5.3 Data loggers
6 Enclosure
68 7 Installation
8 Maintenance
9 Estimation of measurement uncertainty
9.1 General
69 9.2 Type A uncertainty estimation
9.3 Type B uncertainty estimation
70 9.4 Uncertainty in case of low water level conditions
9.5 Level measurement datum
9.6 Combining primary measurement uncertainties
71 Annex A (informative) Types of water level measuring devices
85 Annex B (informative) Manually operated measuring devices
88 Annex C (informative) Recording devices
90 Bibliography

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BS EN ISO 4373:2022 - TC 2023
$217.84