ISO 4373:2022 PDF
Hydrometry — Water level measuring devices
Hydrometry — Water level measuring devices
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 27
- Дата публикации:
- 31 марта 2022 г.
- Издание:
- ISO IS 4373 edition 4 version 1
- ICS:
- 17.120.20
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.
Abstract
Overview
ISO 4373:2022 - Hydrometry - Water level measuring devices specifies functional requirements for instrumentation that measures the water surface level (stage), primarily to determine flow rates. The fourth edition updates device classifications, removes mercury, and reorganizes guidance into three annexes. It applies to both contact and non‑contact methods (e.g., ultrasonic, radar/laser, electromagnetic) and addresses device performance, installation, recording, maintenance and the estimation of measurement uncertainty.
Key Topics and Technical Requirements
- Performance parameters: Uncertainty, measurement range, temperature and relative humidity ranges summarize device performance.
- Performance classes: Devices are classified into Performance class 1, 2, and 3, with specified resolution, range and nominal uncertainty (e.g., class 1: ≤1 mm resolution up to 1 m and nominal uncertainty
Технические детали
- Технический комитет
- ISO/TC 113/SC 5 - Instruments, equipment and data management
- SKU
- ISO 4373:2022
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