1. Flow Measurement Principle

 

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 transceiving technologies.

As shown in Figure 1, a pair of ultrasonic transducers which are 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.

 

2. Descriptions :

  

     The FUF Ultrasonic Flow meter is designed to be installed at a fixed location for long-term flow measurement from outside of a pipe that carries pure liquids and liquids with minor suspended particles. It utilizes cutting-edge technologies such as advanced transducer design, low voltage transmission, digital signal processing, and self adaptation to achieve high performance.

      As QUALITY is of crucial importance, all transducers are carefully paired, and all flowmeters are wet-calibrated in the factory to further ensure system accuracy and reliability.

     FUF Ultrasonic Flow meter provides versatile input/output interfaces, such as digital and relay outputs, batch control, alarm, flow totalizing, 4-20mA output, and optional RTD interface for thermal energy measurement, which can be easily used by a host computer or a flow controller for process monitoring and control. Besides, the isolated built-in RS-485 port and the optional GPRS/GSM module make remote flow monitoring easy and reliable.

      Due to the non-intrusive nature of the clamp-on technology, there is no pressure drop, no moving parts, no leaks, no risk of contamination, no risk of corrosion, no pressure dependency and no blockage on the flow. The installation is very simple and requires no special skills or tools. The cost of installation, operation, and maintenance is lower than that of conventional flowmeters.

      FUF Ultrasonic Flow meter is an ideal choice for demanding applications where low-cost, high-performance and non-intrusiveness are a must. A pplications include, but are not limited to, liquid process control, water flow measurement (hot/chill water, city water, sea wat beverages, and many other liquids.

 

3.Features:

 

  • High accuracy:±1% normally;±0.5% when on-site calibration available
  • Wide pipe size range (from 1" to 240")
  • Non-intrusive. No pipe disturbance. No moving parts. No pressure drop.
  • Easy and economical installation. No pipe cutting or hole drilling.
  • Easy to use and set up. Self-explanatory menu programming
  • Velocity, volumetric and totalized flow
  • IP65 weather-proof enclosure
  • 4-20mA output, OCT digital output, relay output, batch control, alarm control
  • Isolated RS485 interface, MODBUS compatible
  • Optional GPRS / GSM networking module
  • No maintenance
  • Low power consumption. Less than 1 W
  • Ideal for both clean and opaque liquid flows

 

4.Model Selection

 

Model Product
FUF Ultrasonic flow meter

Code

Diameter

15~6000mm

DN15~DN6000

Code

Main Unit

P

Portable type

Ep

Panel mounted type

Fb

Wall mounted type

Ex

Ex-proof type

K

Handheld type

Code

Transducer type

S

Normal type: suitable for DN15~DN100, temperature ≤ 110 ℃

M

           suitable for DN50~DN700, temperature ≤ 110 ℃

L

suitable for DN300~DN6000, temperature ≤ 110 ℃

C

Insertion type

G

In-line type

Code

Output signal

F1

4~20mA

F2

RS232

F3

Relay output

Code

 Power supply

D1

DC24V

D2

AC220V
FUF 500 Fb C F1 D2

 

 

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