Research Article
Online Superficial Gas Velocity, Holdup, and Froth Depth Sensor for Flotation Cells
| Component | Specifications |
| Pressure sensor | Model: Wika S-20 | Range: 0-4 bar | Output: 4-20 mA |
| Solenoid valve | Model: SMC, VT307E | 24 (VDC) coil |
| Air control valve | Model: SMC, VEX1130 | Operation: 0.05–0.9 MPa | Pneumatic |
| IP transducer | Control Air Inc. | Model: type 500-AC |
| Flowmeter | Model: SMC, PFM7201 | Range: 25 L/min and 200 L/min (SLPM) | Output: 4-20 mA |
| Pressure regulator | Model: Foxboro | Type 67 F, R28 |
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