Ultrasonic Flow Meter

ultrasonic flow meter


What is Ultrasonic Flow Meter?

Ultrasonic flow meter is designed to measure the velocity of liquid within a closed conduit. It uses the well-known transit-time measurement principle, plus our proprietary signal processing and ultrasonic transcribing technologies.

A pair of ultrasonic transducers is mounted on the pipe upstream and down stream respectively. Each transducer serves as both ultrasonic transmitter and receiver. The main unit operates by alternately transmitting and receiving a coded burst of sound energy between the two transducers. The transit-times in the upstream direction as well as in the downstream direction are measured. The difference of the two transit times is directly and exactly related to the velocity and the liquid in the pipe.


Features of Ultrasonic Flow Meter

  • Energy rate and total consumption measurement
  • Non-intrusive clamp-on technology. Easy and economical installation
  • No moving parts to worn out. Long life span. No maintenance
  • High accuracy. Thermal energy custody transfer performanceWide flow measurement range, bi-directional
  • Built-in totalizer, batch controllers and task scheduler
  • Isolated RS-485 interface. Supports MODBUS protocol
  • Abundant inputs/outputs, such as 4-20mA output, relay output, pulse output, alarm output, etc
  • Easy to use and set up. Self-explanatory menu-driven programming
  • NEMA 4X (IP65) Weather-resistant enclosure Low-power consumption, less than 1.5Watts
  • Suitable for virtually any liquid heating/cooling systems such as HVAC, office buildings, apartment complexes, condominiums, solar heating systems and geothermal systems.


Technical Specifications of Ultrasonic Flow Meter

Main Unit

2 line x 20 character LCD with backlight Working temperature: -25~60°C

Mini thermal printer with 24 line character output

4×4+2 pushbutton keypad

RS-485 interface for networking

Ultrasonic Transducer Options

TS-1: small size transducer (magnetic) for pipe size: DN15~100mm, liquid temperature ≤110°C

TM-1:medium size transducer (magnetic) for pipe size: DN50~1000mm, liquid temperature ≤110°C Ultrasonic Transducer options

TL-1: Large size transducer (magnetic) for pipe size: DN300~6000mm, liquid temperature ≤110°C

Temperature Transducer

Three wire PT100 platonic resistance, measuring range: -50~+180°C measuring accuracy:100°C, 0.8°C , the temperature difference ≤0.1°C

Liquid types

Water, sea water, industrial sewage, acid and alkali liquid, various oils etc. liquid which can transmit sound wave.




Better than ±1%

Power Supply

Built-in rechargeable Ni-MH battery (for 20 hours operation) or AC 220V

Power Consumption



Intelligent charging with AC 220V; After charging sufficiently, it automatically stop and display green light


Net weight: 2.5kg (main unit)


With a high strength carrying case suitable for normal and harsh environment


Applications of Ultrasonic Flow Meter

  • Water Treatment
  • Pump Testing
  • Paper & Pulp
  • Effluent Treatment Plants
  • Waste Water & Sewerage
  • Food & Diary Processing
  • Chemical Process Plants