Fuji – FST Spool Piece Ultrasonic Flowmeter

FST is an in-line ultrasonic flowmeter with three parallel measuring paths. With the latest digital signal processing technology and the calculation algorithm, it can deliver highly precise flow measurement. RS-485 communication is also available as an option.FUJI-FST Spool piece Ultrasonic Flowmeter


  • Highly accuracy: ±0.2% of the rate
    • Using the new algorithm for calculating the flow velocity, it can measure any type of fluid with high accuracy.
  • Low maintenance
    • With no moving part, it has long-term stability while requiring only minimal maintenance work.
  • Bubble resistant
    • By using the advanced anti-bubble measurement technology, the interface from air bubbles is greatly eliminated.
  • For any liquid from -40°C to +150° C
    • Non-conductive fluid including oil, mixed liquid, purified, water can be measured.
  • Easy-to-operate
    • Backlit LCD and front keys
    • Troubleshooter provided
    • Can be vertically or horizontally installed


General specification

Measuring Principle Transit time difference method
Parallel 3-path with the advanced ABM (anti-bubble measurement) system
Accuracy 0.2% of rate ( Flow velocity 1 m/s to 10 m/s
0.002% m/s (flow velocity 0.5 m/s to 1 m/s)
Diameter (mm) 25 (under development), 50, 80, 100
Flow Velocity Range Minimum: 0 to 0.3 m/s or -0,3 to 0 m/s
Maximum: 0 to 10 m/s or -10 to 0 m/s
Flow Range
Diameter (mm) 25 50 80 100
Minimum (m³/h) 0 t0 0.54 0 to 2.13 0 to 4.65 0 to 7.99
Maximum (m³/h) 0 to 17.6 1 to 70.6 0 to 154.8 0 to 266.0
Dimension and Weight Refer to the outline diagram
Power Supply 100-240V AC (+10% – 15%), 50/60 Hz or 20-30V DC
Power Consumption Approx. 20 VA ( AC Power)
Approx. 6 W (DC Power)
Enclosure IP66
Ambient temperature -40º C to +60º C
Liquid Temperature -40ºC  to +150º C
Bubble Content ≤12 vol %


• Wetted parts material:
Flow cell: stainless steel 316L
Flange: stainless steel 316L
Sensor wetted parts: stainless steel 316L
• Detecto r material:
Housing: SCS13
• Process connections:
Flange (horizontal or vertical mounting)
• Flange rating:
ANSI class 150/300
DIN PN16/40


• Accuracy (reading and pulse output):
±0.2% of rate (flow velocity: 1 m/s to 10 m/s)
±0.002 m/s (flow velocity: 0.5 m/s to 1 m/s)
(4–20 mA DC output):
Above indicated accuracy ±0.01 mA (at the ambient
temperature of 25°C)
• Reference condition:
• Fluid: water
• Straight run requirements: 10D on inlet side
5D on outlet side
(D: pipe diameter)
• Measurement period: 600s
• Pipe wall thickness: schedule 40
• Fluid temperature: 0°C to 35°C
• Response time:
1.2 s (standard)

Flow transmitter

• Analog output signal:
4–20 mA DC (insulated), 1 point
Allowable load resistance: ≤ 600Ω
• Contact output:
Forward total, reverse total, alarm, acting range, flow
switch, or total switch
User configurable
• Type: transistor output (isolated, open collector)
• Contact capacity: 30 V DC, 50 mA
• 2 points
• Normal: ON or OFF, selectable
• Frequency: 100 P/s max.
(Pulse width: 5, 10, 50, 100, 200, 500, 1000 ms)
• Communication (option):
RS-485 (MODBUS), isolated, arrestor incorporated
No. of connectable modules: up to 31
Baud rate: 9600, 19200, 38400 bps
Parity: none/odd/even, selectable
Stop bit: 1 or 2 bit, selectable
Cable length: up to 1 km
Data: Flow velocity, flow rate, forward total, reverse total,
status, etc.
• Display:
16-digit 2-line backlit LCD
2-color LED (green: normal, red: at error)
• Language:
Japanese (katakana), English, French, German, Spanish (switchable)
• Flow velocity/flow rate indication:
8 digits numerals (decimal point is counted as 1 digit)
Instantaneous flow rate, instantaneous flow velocity  (minus indication for reverse flow)
Flow velocity m/s
Flow rate L/s, L/min, L/h, L/d, kL/d, ML/d, m3/s,
m3/min, m3/h, m3/d, km3/d, Mm3/d

• Total value indication:
Integrated value of forward flow or reverse flow (reverse
flow is indicated with minus symbol)
8 digits numerals (decimal point is counted as 1 digit)
Unit: mL, L, m3, km3, Mm3
• Housing material:
Aluminum alloy
• Coating:
Urethane resin
• Finish color:
• Wiring port:
G1/2 internal thread
Plastic water-proof gland + rubber plug
• Terminal:
Rod terminal

Outline Diagram (Unit=mm)

Dimension Fuji FST

untuk info product dan harga silahkan hubungi  : sales@wmablog.com

Reference : https://www.fujielectric.com/