Compared with mono channel ultrasonic flowmeter,multi-channel ultrasonic flowmeter has better flow field adaptability,higher measurement accuracy and better measurement reliability.When the mono gas ultrasonic flowmeter fails,the flowmeter cannot work normally and the metering function fails.The multi-channel ultrasonic flowmeter has redundancy,when one of the channels fails,it can still main-tain a high measurement accuracy,and strive for a certain rush repair time for maintenance personnel.At present,many domestic flowmeter products cannot guarantee the measurement accuracy when some sound channels are damaged.In this paper,a compensation algorithm based on normal channel data and inde-pendent calibration of each channel is designed to ensure that the multi-channel gas ultrasonic flowmeter can still measure accurately when there is one faulty channel.In order to verify the effectiveness of the compensation algorithm,the error and repeatability of different models of 4-channel gas ultrasonic flowme-ters with no fault channel,with and without compensation algorithm are compared and tested.The research has a certain guiding significance for the engineers who design multi-channel gas ultrasonic flowmeter.
multi-channel gas ultrasonic flow-metercompensation algorithmreliabilitysym-metrical channelfaulty channel
维普
万方数据
