Hi,
Don't know if this thread is still active but I just purchased an Ultrasonic water flow sensor to build my own water meter but also to detect leaks using the ultrasonic sensor.
Attached the picture and below the specs. Note that sensors have 2 wires.
I didn't find a suitable arduino library to use specially for wiring. I admit I'm new to arduino and sensors.
The sensitivity：-21.6DB
Echo frequency：1.0MHz
6DB pulse length：7.68uS
Peak frequency：1.048MHz
6 db bandwidth：39.5%
Center frequency：1MHz
The static capacitance：800pF~1600pF
Harmonic impedance：＜25Ω
Waterproof level：IP68
Working temperature：5℃~100℃
Temperature drift：＜20KHz
Ultrasonic time delay：1.5uS
Qm value：3.0~4.5
Transmitted beam Angle：5°~10°
Echo sensitivity：＞1.7V（3V，15 pulse，20 mm）
The shell material：Engineering plastics（Heat resistance of 150 ℃）
Hope to find some help here.
Regards
