T/CIDA 0014-2022 Active

Scope: This document specifies the conditions, methods, and steps for on-site comparison of flow rates in open channels, as well as technical requirements such as flow measurement using frame-type flowmeters. This document applies to on-site comparison testing of flow measurement facilities (equipment) in open channels for water conveyance. Main technical content: Foreword 1 Scope 2 Normative references 3 Terms and definitions 4 Technical requirements for on-site comparison of flow rates in open channels 4.1 General provisions 4.2 Comparison conditions 4.3 Comparison methods 4.4 Comparison steps 5 Technical requirements for flow measurement using frame-type flowmeters 5.1 General provisions 5.2 Flowmeters and frames 5.3 Main technical specifications of flowmeters 5.4 Requirements for verification/calibration of flowmeters 5.5 Arrangement of frame-type flowmeters 5.6 Data collection and flow calculation 5.7 Selection and maintenance of standard cross-sections 5.8 Cross-section measurement Appendix A (informative) Main flow measurement facilities in open channels Appendix B (informative) Flow calculation method using frame-type flowmeters Appendix C (informative) Function and requirements of the information system for flow data collection using frame-type flowmeters Appendix D (informative) Record sheet for on-site comparison testing of flow rates in open channels