1The TDS-100H handheld ultrasonic flowmeter is an external clamp and time difference ultrasonic liquid flowmeter that uses low voltage multi-pulse balanced transmit and receive technology. 2Advanced circuit design, excellent hardware design and Chinese user-friendly software design, suitable for continuous measurement of the flow of clean liquid without large concentrations of suspended particles or gases in an industrial environment. 34 lines of Chinese characters display the instantaneous flow rate, flow rate, cumulative flow rate, signal status, etc. 4Built-in data recorder can record date, accumulated flow, signal status, working time, etc. 5The standard data interface RS232 is used for networked detection or export of recorded data. 6OCT outputs positive, negative, static cumulative pulse signals and frequency signals (1-9999KHZ).