Metering precision self-adaptive calibration device and calibration method for ultrasonic gas meter

The invention discloses a self-adaptive calibration device for the metering precision of an ultrasonic gas meter, and belongs to the technical field of gas meters. The device comprises a detection table; a tested gas meter; the gas meter mounting seat is arranged on the detection table; the gas meter to be tested is mounted on the gas meter mounting seat; the sonic nozzle is connected with the tested gas meter; the nozzle mounting seat is mounted on the detection table and is connected with the sonic nozzle; and the nozzle mounting seat is used for moving the sonic nozzle. The invention further provides a self-adaptive calibration method for the metering precision of the ultrasonic gas meter. According to the method, the calibration efficiency of the ultrasonic gas meter can be improved, and deviation caused by manual operation can be avoided through error detection and calibration coefficient calculation. 本发明公开一种超声波燃气表计计量精度自适应校准装置，属于燃气表技术领域；该装置包括：检测台；被测燃气表；燃气表安装座，其设置在检测台上；所述被测燃气表安装在燃气表安装座上；音速喷嘴，其与被测燃气表连接；喷嘴安