Implementation and Field Calibration Pipeline Doppler Meters in Northern California

摘要

The Tehama-Colusa Canal Authority (TCCA) has been using SonTek Doppler flow meters for about 3 years. TCCA is located in northern California with their headquarters in Willows. There are a total of about 30 SonTek Doppler flow meters that TCCA has installed. The installation documentation and the calibration procedure is the topic of this paper. The goal of this project was to check the accuracy of the volumetric readings from the new doppler flow meters compared to the venturi meters that are currently used. The venturi meters are the historical meters and were set up by the US Bureau of Reclamation (USBR). TCCA has opted to move away from the existing technology for a variety of reasons. The key problem is access to an enclosed space. TCCA has opted to use the Doppler meter as the replacement. USBR has proposed using relative uncertainty for the evaluation of the minimum number of data points to calibrate a site. In past studies, ITRC has used the R-Squared statistic to set the minimum number of data points. This paper evaluates the technique used to report calibration of a meter.