How can you check the accuracy of a 4 to 20 mA loop receiver?
A. Measure the loop impedance
B. Measure the voltage drop across the loop
C. Measure the current in the loop
D. Measure the resistance of the loop
Answer:C
How can you check the accuracy of a 4 to 20 mA loop receiver?
A. Measure the loop impedance B. Measure the voltage drop across the loop C. Measure the current in the loop D. Measure the resistance of the loop
Explanation: To check the accuracy of a 4 to 20 mA loop receiver, you can measure the current in the loop using a multimeter or a loop calibrator. By comparing the measured current to the expected value based on the process variable being measured, you can determine the accuracy of the receiver and identify any potential problems.