Compu-Flow™ Portable Transit-Time Flow Meter

The Compu-Flow™ Portable Transit-Time Ultrasonic Flow Meter measures flow rate of liquid in a closed pipe by using a pair of clamp-on or wetted ultrasonic transducers. In general, the liquid should be full of pipe, and should contain no or small amount of particles or air bubbles.

    •    1G-8G SD data logger
    •    Simulation Run Status
    •    Self-powered 4-20mA output

Compu-Flow™ Portable Transit-Time Flow Meter

The wall mounted flow meter is based on transit-time flow measurement principle. It measures flow rate of liquid in a closed pipe by using a pair of clamp-on or wetted ultrasonic transducers. In general, the liquid should be full of pipe, and should contain no or small amount of particles or air bubbles.

  • MODBUS, M-BUS and FUJI extending communication protocol by RS485 port
  • 4 thermal energy units optional and applied to the standardization of EU
  • 1G-8G SD data logger available
  • Simulation Run Status (For details, please refer to chapter. How to use Simulation Run Status)
  • Self-powered 4-20mA output

The ultrasonic C6-TDS-100P converter is a fully featured flow meter for liquid flow and heat calculation. It has analog output and relay and pulse digital outputs for totalizer. It can be matched with clamp on sensors, insertion sensors or fully fabricated flanged pipe sensors or ‘π’ style sensors for low flow. Data logging is a standard feature.

Wall mount flow transit time flow meter C6-TDS-100P – the most economical way to measure flow in an existing pipe!

• Portability
• Easy to check it will work using TDS100H portable flow meter kit – same sensors!

• Easy to install as no need to cut pipe, stop process, or weld fittings
• Very few versions as the resistance to chemicals, and pressure is property of the pipe
• One flow meter for all pipes from 15-6000mm clamp on – compatible with all DH sensors.
• Better than 1% accuracy
• 0.2% of repeatability
• 2×20 English letters LCD display
• 4×4 key tactile-feedback membrane keypad
• 85~264VAC or 24VDC power supply
• Pipe diameters from 15mm to 6000mm
• Operate with clamp on, insertion and flow-cell transducer
• One channel programmable 4-20mA output
• Two channel programmable digital out (isolated OCT and Relay)
• Frequency output
• IP65
• Five channel analogue 4-20mA input. (version 7)
• SD USB data memory ( 2GB, 4GB ,8GB)

Principle of Measurement
When the ultrasonic beam is transmitted through the flowing liquid, there will be a difference between the upstream and downstream transit time (travel time or time of flight), which is proportional to flow velocity,when fluid is flowing, counterflow transit time is more than direct flow transit time. the formula as below.

Power Supply
Standard 85 – 230 VAC; Optional – 24 VDC
Measured Values
Volumetric Flow, Flow Velocity, Flow Direction, Speed of Sound, Quality of measured signal
*± 1 % for dia ≥50 mm and v >0.5 m/s
*0.3% (*for flow velocity from 0.2 – 30m/s)
Clamp-on, insertion and in-line type
2 Line backlight LCD
4 X 4 Numeric Keyboard membranes
0/4-20 mA; relay output/ OC, Freq./ Pulse output
RS 485/ RS 232 with MODBUS (ASCII or RTU)
Up to 3 Analog input channels & up to 2 x 3 Wire Pt 100
Data Logging
Built-in or optional PC based
IP 65
Retained values positive, negative and net flow 512 days and 128 months and 10 years
Nonvolatile 99 yrs + all parameter inputs
Cable Length
25 to 5000 ft.
25 ft. standard
Engineering Units
English & Metric

Pipe Material:
Carbon steel, stainless steel, cast iron, PVC, aluminum, fiberglass – and most high density materials
Mortar, Tar Epoxy, Rubber
Standard liquid:
Water,clean sewage water, sea water, kerosene, petrol, fuel oil, crude oil, propane, butane, diesel, alcohol, acid and Alkali liquid – most liquids where the velocity of sound is known.

Solid suspended in the liquid maximum 20,000 ppm and maximum bubbles 2%


  • Potable Water
  • Ag Water
  • Abrasives
  • Acids
  • Asphalts
  • Caustics
  • Chemicals
  • Concrete Pumping
  • Grout
  • Dredge Flows & Sand Pumping
  • Drilling Mud
  • Large Contaminates
  • Highly Viscous Substances
  • Food Processing
  • Hazardous Wastes
  • Hydrocarbons
  • Particulated Liquids
  • Municipal Sludge’s & Wastes
  • Oils
  • Paper Pulp
  • Product Processing
  • Plastics
  • Rendering Products
  • Reservoirs
  • Rivers and Streams
  • Runoffs
  • Sludge’s
  • Slurries & Tailings Dams
  • Suspended Solids
  • Tars
  • Most liquids containing suspended particles or air bubbles
  • …and More!


1* mainframe
1* M1 + 1*L1 Transducer
2* 5m transducer cable
1* metal clamp fixture (The cable can be extended, if any needs, please contact us.)

* Number of items included

1) Clamp-on transducer(standard S1 style,standard M1 style,high temperature S1H,high temperature M1H)
2) Insertion transducer(standard insertion B,cement insertion B)
3) In-line type transducer(hygienic style, Π style,standard style)
4) Special shielded twisted pair cable
5) Strap(applied with installation of transducers on cast iron,GRP,PVC,etc. that can not be welded directly).

2 Year Limited Warranty

Advanced Flow warrants all Compu-Flow™ products for a period of 2 years from date of purchase to conform to the published specifications and to be free from defects in materials and workmanship.

This warranty is limited to repair or replacement of parts or products at the option of the manufacturer. Advanced Flow is not responsible for product damage caused by use or misuse nor will they assume liability for any unauthorized repairs, modifications, or installations by other than their personnel or representative. Products to be returned to the factory for warranty repair must have prior approval from Advanced Flow. Liability will not be accepted for unauthorized returns. No liability will be accepted for damages to customers equipment and/or materials due to use or misuse of the products nor for any loss of profits or other special damages.

This warranty is expressly in lieu of any other warranty or merchantability of fitness for a particular purpose. The remedies of repair or replacement as set forth above are the only remedies under this warranty. Advanced Flow disclaims any obligation or liability for loss or use of the product warranted, loss of time, inconvenience, commercial loss or any other direct, consequential, special, or incidental damages. This warranty is in lieu of any other obligation or liability of Advanced Flow of any nature whatsoever.