A flow transmitter using an orifice plate has a range of 0-1000 GPM and a 4-20 mA output signal. If the transmitter is currently measuring a differential pressure of 50 psi across the orifice plate, what is the output signal in mA?
A. 9.4 mA
B. 15.8 mA
C. 4.8 mA
D. 8.6 mA
Answer:C
A flow transmitter using an orifice plate has a range of 0-1000 GPM and a 4-20 mA output signal. If the transmitter is currently measuring a differential pressure of 50 psi across the orifice plate, what is the output signal in mA?
A. 9.4 mA B. 15.8 mA C. 4.8 mA D. 8.6 mA
Explanation: The exact relationship between the differential pressure across an orifice plate and the corresponding flow rate can be complex, depending on factors such as fluid properties, orifice diameter, pipeline diameter, and the shape of the orifice. Generally, the flow rate is proportional to the square root of the differential pressure.