แบรนด์ : TOKYO KEISO


Recommended Applications

  • High accuracy: ±0.5% of reading. 3-ultrasound beam technology enables highly accurate measurement ranging from laminar to turbulent flow.
  • The digital signal processor ensures stable measurement and minimizes the influence of bubbles and particles.
  • No moving parts and maintenance-free. Suitable for measuring a variety of liquids including oil and solvent, as well as for replacing turbines or PD flow meters
  • Easy installation with compact design
  • 4 to 20 mA current output, pulse output, and status output
  • Explosionproof types are available; TIIS approved, and ATEX
  • Complying with: 
    • RoHS
    • Decision No. 2011/65/EU


Short Specifications

Measuring methodTime-flight ultrasound, 3beams
Measuring fluidLiquids with solid particle contact ≤5% in volume.
Bubble≤2% in volume
Temperature–45℃ to +145℃ (Compact type)
–45℃ to +180℃ (Separate type / Standard version)
–45℃ to +250℃ (Separate type / Extended temperature version)
–200℃ to +180℃ (Separate type / Cryogenic version)
Fluid pressureMax.10 MPa as per flange rating
Measuring range
Flow velocity: 
Min.0 to 0.3 m/s
Max.0 to 20 m/s
Flow rangeMin.0 to 0.531 m³/h
Max.0 to 226194 m³/h
Nominal size25 to 2000mm Contact Tokyokeiso for the size over 2000mm
Process connection
Equivalent to JIS10K,JIS20K
ASME class 150, 300, 600
EN1092-1 PN6, 10, 16, 25, 40, 63, 100
Wetted part materials
Measuring tube/Flange: 
Size25 to 65mm (SS316)
Size80 to 300mm(Carbon steel)
Measuring accuracy
For flow velocity ≥1 m/s 
(±0.5% of reading)
For flow velocity < 1 m/s 
(±0.3% of reading )
(velocity error ±0.002 m/s)
DisplayBlue dot matrix LCD with back light
Output4 to 20 mA DC (Max.22mA) Load resistance Max.1 KΩ Open collector output 32 V DC,100mA or less
Power supply100 to 230 V AC (85 to 253 V)
24 V DC (11 to 31 V)
Protection classIP66/67
Explosion proofATEX〔EU ATEX directive(94/9/EC)〕


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