An automatic flow controller can be successfully integrated with a________________?
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Answer: C. Rotameter
Explanation
A rotameter utilizes a float inside a tapered tube that moves proportionally with flow rates. This mechanical linear displacement allows easy integration with magnetic or optical position sensors. The direct visual and mechanical readout facilitates reliable automated feedback control loops. Variable area flow meters balance fluid drag forces against gravity acting on a float. Rotameters require no external electrical power for basic local visual flow rate readings. Transmitters can be easily attached to track the vertical position of the internal float.
Chemical laboratories and pilot plants frequently use rotameters for monitoring purge gas flows. Automated dosing systems use instrumented rotameters to maintain precise chemical addition rates. Water treatment facilities rely on these meters for chemical additive and coagulant control. Option A uses a differential pressure principle that requires secondary transmitters for automatic control. Option B generates a differential pressure signal rather than a direct linear mechanical position. Option D is incorrect because rotameters are explicitly compatible with automatic flow controllers.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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