ISO 1438:2017 PDF
Hydrometry — Open channel flow measurement using thin-plate weirs
Hydrometry — Open channel flow measurement using thin-plate weirs
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 65
- Дата публикации:
- 2 мая 2017 г.
- Издание:
- ISO IS 1438 edition 3 version 1
- ICS:
- 17.120.20
ISO 1438:2017 defines the requirements for the use of rectangular and triangular (V-notch) thin-plate weirs for the measurement of flow of clear water in open channels under free flow conditions. It includes the requirements for the use of full-width rectangular thin-plate weirs in submerged (drowned) flow conditions.
Abstract
Overview
ISO 1438:2017 - Hydrometry - Open channel flow measurement using thin-plate weirs specifies requirements and best practices for measuring flow of clear water in open channels using . The standard covers both and thin‑plate weirs under conditions and includes provisions for in . It defines installation, head measurement, discharge formulae, uncertainty evaluation and maintenance needed to achieve reliable flow gauging.
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