Technology Solutions

FWD Series Ultrasonic Flowmeter for Air

Accurately measures flow of air or nitrogen gas

The FWD Series ultrasonic flowmeter measures flow of air or nitrogen gas in pipes from 25 mm to 200 mm.

As an air flowmeter it is ideal for example to measure the operating load rate of a compressor or the amount of used air in plants, detect air leakage etc., allowing for efficient operation and energy savings.

  • Process media: air or nitrogen gas
  • Nominal diameter (mm): 25, 32, 40, 50, 65, 80, 100, 150 and 200
  • Process connection: screw, wafer and flange
  • Flowrates from ±0.6 to ±2000 m3/h
  • Display units: Accumulated flow m3 and liter, flowrate l/min and m3/h, pressure kPa, temperature °C
  • Analog output: 4-20 mA (for power supplied version only)
  • Pulse outputs: 2 x outputs for forward and reverse flow (for power supplied version only)
  • Power supply: 24 VDC ±10% or built-in lithium battery
  • Accuracy: ±2% of flow
  • Low flow cut-off
  • Measures forward and reverse flow
  • Alarm: Hi/Lo flowrate alarms
  • Normal flow rate conversion: calculation based on 0°C and 1 atm
  • Standard flow rate conversion: calculation based on user defined temperature and 1 atm
  • Update rate: 0.5 sec (2 sec for battery version)
  • Rangeability: 60:1
  • Pressure: Max 10 bar (145.04 Psi)
  • Media temperature: -10 to +60°C (14 to 140°F)