The G868 is a new generation of liquid ultrasonic flowmeter, designed with and adopting technologies such as 'sound velocity tracking,' multi-pulse, DSP digital signal processing, and automatic ultrasonic energy enhancement, ensuring the stability, accuracy, and reliability of flow measurement. It features an explosion-proof design, certified by CNEX, specifically for flow measurement in hazardous areas. It is suitable for the hazardous and complex environments of the oil and gas field and chemical industry, as well as the demanding process application requirements. According to the characteristics of liquid flow measurement in the process industry, it provides ultrasonic sensors in external clamp-on, insertion, and online open-hole types, which, together with related installation fixtures, allow for quick installation.