Two flows are to be ratio controlled, the first is measured with an orifice and the second with a shedding vortex flowmeter. The signals must be:
A. Both made linear by using a square root extractor on the orifice signal
B. Used as if a 1 percent error can be tolerated
C. Both made linear by using a square root extractor on the shedding vortex transmitter
D. Flow-calibrated
Answer:A
Two flows are to be ratio controlled, the first is measured with an orifice and the second with a shedding vortex flowmeter. The signals must be:
A. Both made linear by using a square root extractor on the orifice signal B. Used as if a 1 percent error can be tolerated C. Both made linear by using a square root extractor on the shedding vortex transmitter D. Flow-calibrated