What is the purpose of a loop isolator in a 4 to 20 mA loop?
A. To measure the current flowing through the loop
B. To isolate the transmitter from the control system
C. To provide a voltage reference for the transmitter
D. To convert the current signal to a voltage signal
Answer:B
What is the purpose of a loop isolator in a 4 to 20 mA loop?
A. To measure the current flowing through the loop B. To isolate the transmitter from the control system C. To provide a voltage reference for the transmitter D. To convert the current signal to a voltage signal
Explanation: A loop isolator in a 4 to 20 mA loop is used to isolate the transmitter from the control system. This can help to protect the control system from noise or other interference on the loop.