Digital Gas Flow Meter


The SMART FLOW 20 is based on the classical method viz. soap film method. The instrument is automated by using micro controller, which provides highly accurate measurement and direct digital read out of gas flow rate. The time required for the soap film to pass through a known fixed volume is measured. The soap film is sensed by IR sensor. When the soap film passes through first sensor, it activates the timer of micro controller. Timer is stopped when the film crosses the second sensor. The flow rate is then calculated by micro controller and instantly displayed in cc/min.


  • Direct Digital Readout
  • Micro controller Based
  • Highly Accurate and Fast
  • Useful for measuring any gas flow specially in G.C
  • Easy to operate
  • Free of personal errors


  • Range: SMART FLOW 20:—- 5 cc/min to 500 cc/min
  • SMART FLOW 21—–0.5 cc/min to 45 cc/min
  • SMART FLOW 22—–200 cc/min to 2000 cc/min
  • Accuracy : ± 2% of Reading, ±1 digit
  • Power supply : 230 V AC, 50 Hz, 2 W
  • Resolution : 0.1 cc/min for SMART FLOW 20
  • 0.01 cc/min for SMART FLOW 21
  • 1.0 cc/min for SMART FLOW 22
  • Dimensions: 27 cm (H) x 13 cm (W) x 10 cm (D)