Hundreds of magnetic flowmeters may be used in a typical mineral processing plant. With the aid…
Hundreds of magnetic flowmeters may be used in a typical mineral processing plant. With the aid of diagrams explain how an AC type magnetic flowmeter operates. Why do we apply Phase Sensitive Demodulation technique to extract useful signals from a typical AC flowmeter? What advantage does it have over DC flowmeters?
[1 MARK]
In an extractive metallurgy processing plant, AC-type magnetic flowmeters are installed to measure the flow rates of slurry transported in pipes. The following information is available on the flowmeters:
The internal diameters of the pipe is (Select one of these for your solutions: 95mm or 100mm or 105mm or 110mm)
The conductance of the fluid is s = (Select one of these for your solutions: 195 or 200 or 205 or 210 µSiemens/m)
The diameter of the sensors on the flowmeter is (Select one of these for your solutions: 5.95 or 6.0 or 6.05 or 6.1 mm)
The flux density of the flowmeters is (Select one of these for your solutions:
1.09 or 1.1 or 1.15 Tesla).
The magnetizing current is im = 2.2 sin (?t).
The flow rate of slurry in the pipe is (Select one of these for your solutions: 490 or 500 or 510 or 5120 L/min). Calculate the voltage produced by the flowmeter. What is the current supplied at this voltage?
Attachments: