Ultrasonic Flowmeter for Air

Ideal for compressor control
Applicable pipe diameter: 25–200 mm

  • No pressure loss = no energy loss
  • Tolerant to oil and mist – No need for filter such as mist separator
  • Lithium-ion battery driven version available
    Battery life: approx. 10 years
  • Flow rate conversion
    Actual flow rates are converted into those in normal or standard conditions.
  • Forward/reverse flow measurement
  • Air leakage detection

Description

Pipe diameter (mm) 25, 32, 40, 50, 65, 80, 100, 150, 200
Power supply voltage 24 V DC ±10% or lithium-ion battery (battery life: approx. 10 years under the temperature of 20°C)
Power consumption 24 V DC, 1.5 W or less
Target fluid Air (mainly factory air) or N2 (pipe diameter 25–80 mm)
Fluid temperature -10°C to 60°C, RH90% or less
Operating pressure < 1 MPa (gauge pressure)
Range (actual flow rate) and accuracy
Diameter (mm) Range (m3/h) Accuracy
±2.0% of rate ±5.0% of rate
25 ±0.6–35 ±3.5–35 m3/h ±0.6–3.5 m3/h
32 ±1.1–65 ±6.5–65 m3/h ±1.1–6.5 m3/h
40 ±1.3–80 ±8–80 m3/h ±1.3–8 m3/h
50 ±2.5–150 ±15–150 m3/h ±2.5–15 m3/h
65 ±4–240 ±24–240 m3/h ±4–24 m3/h
80 ±5–300 ±30–300 m3/h ±5–30 m3/h
100 ±10–500 ±50–500 m3/h ±10–50 m3/h
150 ±24–1200 ±120–1200 m3/h ±24–120 m3/h
200 ±40–2000 ±200–2000 m3/h ±40–200 m3/h
Flow rate conversion accuracy: FWD025–080: ±2.5% or rate (at 500 kPa, 25°C, dry air)
FWD100–200: ±2.0% or rate (at ≥ 300 kPa)
Display Main display Forward or forward/reverse mode:

  • ⌀25–⌀80 mm: Instantaneous flow rate (m3/h) 5-digit (4-digit for over 2000), Pressure (kPa) 5-digit, temperature (°C) 3-digit
  • ⌀100–⌀200 mm: Instantaneous flow rate (m3/h) 5-digit (4-digit for over 2000), Pressure (kPa) 5-digit, Temperature (°C) 3-digit
Sub display
  • ⌀25–⌀80 mm: Instantaneous flow rate (Nm3/h) 5-digit (4-digit for over 2000), Pressure (kPa) 5-digit, temperature (°C) 3-digit
  • ⌀100–⌀200 mm: Instantaneous flow rate (Nm3/h) 5-digit (4-digit for over 2000), Pressure (kPa) 4-digit, Temperature (°C) 3-digit
Output signal
(not available for battery-driven version)
Current output 4–20 mA DC (±0.5% FS), maximum resistance load 400Ω, maximum output current 22 mA
Instantaneous flow rate, pressure, or temperature
Contact output
  • 2 open drain outputs, maximum load 24 V DC, 50 mA, maximum frequency: 10 Hz, Duty 35–65%
  • Output 1: Unit pulse (forward), Output 2 : Unit pulse (reverse), Upper/lower alarm, device error
Connection method ⌀25, ⌀32 mm ⌀25 mm: Rc1, ⌀32 mm: Rc1-1/4
⌀40–⌀80 mm Wafer (between JIS10K flanges)
⌀100–⌀200 mm JIS10K flange
Pipe condition
(straight pipe length)
⌀25, ⌀32 mm Upper stream 20D or more, downstream 5D or more
When using with forward/reverse display mode, both of upper/lower stream 20D or more
⌀40–⌀200 mm Upper stream 10D or more, downstream 5D or more
When using with forward/reverse display mode, both of upper/lower stream 10D or more
Materials of gas-contacting parts Aluminum alloy, PPS, fluorosilicone rubber, etc.
Installation location Indoor or outdoor (IP64 equivalent)
Storage temperature -20°C to 70°C, non condensing

 

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