Calibration and fault finding of pneumatic to current converter for temperature control system
A differential pressure transmitter is calibrated 0 to 80 inches of water and transmits a 4 to 20 mA dc signal. This transmitter is placed across an orifice plate which is sized to create 80 inches of water differential 6 gallons per minute. What is the flow rate when the signal is 13 mA dc?
For the equipment described in the preceding question, what will the signal be if the flow rate is 4 gpm?
Assume the line used in Questions 1 and 2, is a 1/2-inch schedule 40 pipe (IV = 0.622 inches). find the orifice bore used to satisfy the conditions given if the measured fluid is water at 60 Deg F
The best choice of orifice taps in the preceding problem would be:
The output signal or reading of a magnetic flowmeter is: