prBAS EN 18069:2027

This document specifies requirements for the selection, installation, validation, and operation of continuous measuring devices CMDs as follows: 1) Selection: defining the user requirements, the purposes of the required measurements, associated data quality requirements, and choice of CMDs. 2) Installation: verifying a complete and correct delivery of the procured CMD and verifying a correctly functioning on-site installation, operation and communication of the CMD. 3) Validation: verifying that the correctly installed CMD meets all of the original defined user requirements. 4) Operation: implementing operating and maintenance procedures, processing of data and document traceability. The overall objective is to obtain representative and reliable measurements when using CMDs to monitor water quality. This document is applicable to CMDs for monitoring physical and chemical parameters in different types of water.