A measurement of absolute pressure is to be made using a mechanism employing two separate bellows. Measurements are applied to one bellows and the other:
A. Is sealed an atmospheric pressure of 14.7 psi
B. Is completely evacuated and sealed
C. Contains alcohol for temperature compensation
D. Has an active area twice that of the measuring bellows and is sealed at a pressure twice atmospheric
Answer:B
A measurement of absolute pressure is to be made using a mechanism employing two separate bellows. Measurements are applied to one bellows and the other:
A. Is sealed an atmospheric pressure of 14.7 psi B. Is completely evacuated and sealed C. Contains alcohol for temperature compensation D. Has an active area twice that of the measuring bellows and is sealed at a pressure twice atmospheric