Simultaneous Data Acquisition for Increased Performance in Transit Time Difference Ultrasonic Flowmeters
Ultrasonic transit time difference meters are prevelent in industry due to their ease of use and lack of moving parts. But, They often suffer from a cross-sensitivity to the speed of sound in the fluid, which is dependent on the temperature. Other factors like changes in the flow profile or trigger jitter in the signal can also have a large impact on the accuracy to which measurements can be made. This dataset contains all of the original time-domain signals used to obtain figures 6, 7 and 8 in the article "Simultaneous Data Acquisition for Increased Performance in Transit Time Difference Ultrasonic Flowmeters". They show the importance of careful consideration of exactly how data is acquired in transit time difference flow metering. It is shown in the article that fluctuations in the measured time difference can, in some cases, be reduced by an order of magnitude by acquiring the upstream and downstream signals simultaneously rather than sequentially.
Each figure has it's own folder. Inside each folder there are csv files with names 1.csv, 2.csv, ..., N.csv corresponding to the time domain signals that were taken every ~1 second. Each csv file contains three columns: the first is the time, then the next two columns are the two voltage signals obtained simultaneously.