แบรนด์ : TOKYO KEISO



  • Wide measuring ranges
    • A set of UL6400 covers the wide ranges of flow measurement from 15 mm to 1500 mm in pipe sizes.
  • Portable and easy to handle
    • With all instruments and accessories packed, you can carry and store a rugged plastic trunk with casters anywhere you want.
  • Battery driven
    • The built-in battery allows UL6400 to work as long as 14 hours without charging. The attached AC adapter makes UL6400 work continuously while charging the battery.
  • High performances
    • Not only the flow rate and total flow, but also the measuring status, error messages and battery power are displayed. Data are stored in the USB memory for further data processing.
  • Compensation of flow rate in low Reynolds number domain
    • Inputting the kinematic viscosity compensates the flow rate in the low Reynolds number domain using inhouse calculation function.
  • Lining pipe
    • By inputting the lining data, flow rate in lining pipe is measured without time-consuming calculation.


Short Specifications

Measuring methodUltrasonic time flight system
Measuring fluidThe liquids which ultrasonic waves transmit through
Fluid temperature-40°C to 120°C at the exterior surface of the pipe
Flow velocity0.5 to 20 m/s
Accuracy±1.0 % of the reading for pipe size 50 mm or more and velocity 0.5 m/s or more
±3.0 % of the reading for pipe size less than 50 mm and velocity 0.5 m/s or more

Above accuracy is based on the following calibration conditions.
Measuring fluids: Water at 20°C
Upstream straight runs: 10 D
Measurable piping
Carbon steel, Stainless steel, PVC, PP, FRP, Lining materials
Measurable nominal
piping dia.
15 mm to 1500 mm ( Pipe outside diameter must be 20 mm or more )
Display4.3 inch TFT-LCD with backlight by LED

No.1 and No.2 screen: 
Selectable from flow rate, total flow,flow velocity, Reynolds No., Ultrasonic propagation velocity, ultrasonic signal propagation status or else
No.3 screen: 
Bar graph presentation
No.4 screen: 
Error message presentation
External memoryUSB memory
Power supply
Built-in lithium battery: 
Continuous operation for approximately 14 hours, Rechargeable in 8 hours
AC adapter: 
90 to 264 VAC, 47 to 67 Hz
Protection classIP67
Sensor signal cable3m


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