Why must impulse lines for differential pressure flow measurement be sloped continuously from the process taps to the transmitter with no low points?
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A
To prevent the impulse line material from work-hardening under vibration
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B
To ensure gas bubbles or condensate pockets cannot accumulate and create false differential pressure
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C
To keep the fluid velocity in the impulse line below the erosion threshold
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D
To maintain equal electrical resistance in both legs of the circuit