Question 560General Subjects - Assistant Engineer70% to pass
For a pneumatic transmission system for instrumentation purposes, if a pneumatic pressure indicator has a calibrated scale of 0 to 5000 psig, what would be the actual measured pressure if the transmitted pneumatic signal pressure to the indicator is 6 psig, assuming the industry standard of 3 to 15 psig is used for instrument air?
AI Explanation
The correct answer is B) 1250 psig.
The reasoning is as follows:
In a pneumatic transmission system, the standard industry range for instrument air is typically 3 to 15 psig. With a calibrated scale of 0 to 5000 psig on the pneumatic pressure indicator, the 6 psig transmitted pneumatic signal would correspond to 1250 psig on the indicator's scale, as this value falls within the linear range of the 3 to 15 psig input.
The other options are incorrect because they do not accurately represent the relationship between the 6 psig input signal and the calibrated scale of the pressure indicator.
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