Portaflow C / FLQ-2

Water Device Instruments

FUJI Portaflow C21 (Portable Ultrasonic Flowmeter) is a highly accurate and practical flow measurement device based on ultrasonic technology. Designed for non-intrusive flow measurement, it eliminates the need to cut or shut down piping systems. With its compact design and lightweight body (±1 kg), the Portaflow C21 is ideal for field inspections and flexible applications across various industrial sectors.

Using advanced transit-time and pulse Doppler detection technology, it provides real-time measurement of fluid velocity and flow profile. Additional features include thermal energy calculation, data storage via SD card, USB connectivity to PC, and a user-friendly TFT color display. It is suitable for applications in HVAC, food processing, clean water systems, and chemical industries.

Item Specification
Model FSC (Transmitter Portaflow C21)
Detection Method Transit Time & Pulse Doppler
Applicable Fluids Homogeneous liquids (water, distilled water, alcohol, etc.)
Pipe Diameter Range 13 mm – 6000 mm (depending on sensor)
Fluid Temperature -40°C to +200°C (depending on sensor)
Flow Velocity Range 0 to ±32 m/s (min. ±0.3 m/s)
Measurement Accuracy ±1.0% of flow rate
Analog Output 4–20 mA DC (1 point)
Analog Input 4–20 mA DC (2 points) or 4–20 mA + 1–5 V DC
Display TFT Color LCD with backlight
Memory SD card 512 MB (2-year storage), expandable up to 8 GB
Connectivity USB (data transfer and parameter loading)
Battery Life Up to 12 hours continuous operation
Transmitter Dimensions 210 × 120 × 65 mm
Transmitter Weight ±1 kg
Protection Rating IP64 (non-printer version)
  • Flow measurement of water, distilled water, alcohol, and similar fluids
  • Monitoring thermal energy consumption (heating & cooling) in HVAC systems
  • Pipe inspection in food and beverage processing plants
  • Measuring corrosive fluid flow in chemical industries
  • Water usage management and conservation in building facilities
  • Flow profile visualization for fluid system optimization