Table 4 Performance comparison of the developed miniaturized flowmeter with commercial π-type channel flowmeters
π-type flowmeter | Sentronics FlowSonic LF50 | Flow technology QLF51 | Bradford engineering Ultrasonic Flow Meter52 | This work |
|---|---|---|---|---|
Technology | Piezoceramic | Piezoceramic | Piezoceramic | MEMS Piezoceramic |
Channel inner diameter | Φ12.76 mm | Φ5.46 mm | Φ10 mm | Φ4 mm |
Measurement flow range | 0.008~4 L/min | 0.0038~13.25 L/min | 0.06~18 L/min | 0.033~5 L/min |
Measurement velocity range | 0.001~0.521 m/s | 0.0027~9.43 m/s | 0.0127~3.8197 m/s | 0.044~6.631 m/s |
Relative indication error | ±0.5% | ±0.5% | ±0.5% | ±0.5% |
Repeatability | ±0.15% | ±0.2% | N.A. | ±1% |
Turndown ratio | 500 | 3500 | 300 | 160 |
