28. A P transmitter calibrated for a range of 0 to 60 height mercury measures liquid flow through an orifice plate from 0 to 100 gallons per minute (GPM). Calculate the new calibration range for the transmitter if we desire to decrease the flow measurement range to 0 to 50GPM, using the same orifice plate. (a) 0 to 15 "Mercury (b) 0 to 25 " Mercury (c) 0 to 40 " Mercury (D) 0 to 45 Mercury 29. The users manual states an accuracy of 0.1% of the reading for a tachometer (an instrument measuring the rotation speed of a shaft or disk, as in a motor or other machine) with an analog display dial graduated in 5 revolutions per minute (rpm) increments. Estimate the design stage uncertainty at 5000rpm. (a) 10rpm (b) 7.07rpm (c) 5.6rpm (d) 5rpm 30. In the measurement range, the averaged velocity measured by a vortex flow meter is not linearly proportional to the shedding frequency. (a) True (b) False