Introducing our cutting-edge product, the Drainage Dirty Liquid and Sewage Water Handheld 4-20mA Doppler Ultrasonic Flow Meter! As a factory, we take pride in offering superior quality and innovative solutions. This ultrasonic flow meter is designed to accurately measure flow rates in challenging conditions, such as dirty liquids and sewage water. With precise 4-20mA output, it provides real-time data for efficient monitoring and control. Compact and handheld, it offers convenience and ease of use. Trust in our factory's expertise to deliver reliable and durable flow measurement solutions for your specific needs.