What is the formula for converting a percentage of a process variable (%PV) to a process variable (PV) in a system with a 4-20 mA current loop?
A. PV = (%PV/100)(PVmax – PVmin) * PVmin
B. PV = (%PV/100)(PVmax – PVmin) + PVmin
C. PV = (%PV/100)(PVmax – PVmin) – PVmin
D. PV = (%PV/100)(PVmin – PVmax) – PVmin
Answer:B
What is the formula for converting a percentage of a process variable (%PV) to a process variable (PV) in a system with a 4-20 mA current loop?
A. PV = (%PV/100)(PVmax – PVmin) * PVmin B. PV = (%PV/100)(PVmax – PVmin) + PVmin C. PV = (%PV/100)(PVmax – PVmin) – PVmin D. PV = (%PV/100)(PVmin – PVmax) – PVmin
Explanation: To convert a percentage of a process variable (%PV) to a process variable (PV) in a system with a 4-20 mA current loop, use the formula PV = (%PV/100)*(PVmax – PVmin) + PVmin