【Weekly 3 Questions, Question 16】2017.09.14

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By replying with bg9.png, you can see the answer to the previous question (a calculation problem). There is a double-flange level gauge transmitter for a storage tank; the lower flange of the level gauge corresponds to the lower limit of the liquid level. The distance between this lower flange and another point is h1 = 0.5 m, as shown in the diagram. The density of the liquid being measured is ρ1 = 960 kg/m3, and the distance between the centers of the upper and lower flanges is h2 = 5 m. The calibration range of the level gauge is from -47 kPa to -3.8 kPa. Due to damage to the diaphragm, a new double-flange level gauge needs to be installed. The density of the filling fluid in the capillaries of this new gauge is ρ3 = 1060 kg/m3. What is the calibration range of the level transmitter after the replacement? (g=10m/s2) The answer is: -53kPa to -9.8kPa. (The question for this round is as follows: Multiple-choice question) A differential pressure flow meter used in the field, with a range of 40kPa and a maximum flow rate of 16t/h. When the differential pressure is 10kPa, what is the output current of the transmitter and the corresponding flow rate? A. 12mA, 8t/h B. 8mA, 4t/h C. 8mA, 8t/h D. 12mA, 12t/h —————————————————————————————————————————————————————————————— Scoring criteria: Incorrect answers earn 2 wealth points; *incomplete* answers earn 3–6 points. Correct answers with detailed explanations, along with supplementary *answers*, earn 10–15 wealth points. Please score according to these criteria. Note: If there are editing records after answering, only those who participated will be credited points. For continuous malicious spamming, 2 points will be deducted each time, with no upper limit. Pure numbers, pure emojis, or random letters unrelated to the answer are all considered malicious spamming; points will start to be deducted after three warnings