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Unformatted text preview: Student Names(2 or 3): _________________________________________________________________________________________________ In-Class Problem “new” = Chapters 8,9 SEM2
A tank level control loop is used to maintain the liquid level at the desired height of _____________. Signals are in the standard ranges of 4-20 mA and 3-15 psig. The direct-acting level transmitter, LT, has an input range of __________ to __________. (units?) The electronic controller, LC, is a proportional-only controller with a gain of Kc = _______. Its bias value, p , is set to be ________ mA at the nominal setpoint. The I/P transducer has an input range of 4-20 mA and an output range of 3-15 psig and is direct acting. The control valve is (circle one) : air-to-open or air-to-close (a) Determine the gain of the transmitter: Km = in units of . (b) At what height would the control valve be fully closed? h = _________________ ...
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This note was uploaded on 04/17/2010 for the course CHE 461 taught by Professor Staff during the Winter '08 term at Oregon State.
- Winter '08