This International Standard specifies the functional requirements of instrumentation for measuring the level of
water surface (stage), primarily for the purpose of determining flow rates. This International Standard is
supplemented by an annex providing guidance on the types of water level measurement devices currently
available and the measurement uncertainty associated with them (see Annex A).
BS EN ISO 4373:2008 Referenced Document
IEC 60529 Degrees of Protection Provided by Enclosures (IP Code) (Edition 2.1 ***Applies to French text only***)*, 2024-04-19 Update
ISO 772 Hydrometry — Vocabulary and symbols*, 2022-02-28 Update
2000BS 3680-7:2000 Measurement of liquid flow in open channels - Specification of equipment for the measurement of water level
BS EN ISO 4373:2008 Hydrometry - Water level measuring devices has been changed from BS 3680-7:2000 Measurement of liquid flow in open channels - Specification of equipment for the measurement of water level.