You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Regarding variable orifice flowmeters true is and explain in detail?
The variable orifice flowmeter is rotameter. The tube is vertically mounted. the bobbin is scored so that it rotates without sticking. Tube is gas specific and laminar flow occurs at the base and turbulent flow occurs at the top.