How can you test a 4 to 20 mA loop with a multimeter?
A. Measure the voltage drop across the loop
B. Measure the current in the loop
C. Measure the resistance of the loop
D. Measure the frequency of the loop
Answer:B
How can you test a 4 to 20 mA loop with a multimeter?
A. Measure the voltage drop across the loop B. Measure the current in the loop C. Measure the resistance of the loop D. Measure the frequency of the loop
Explanation: To test a 4 to 20 mA loop with a multimeter, you can measure the current in the loop using the mA range on the multimeter. Connect the multimeter in series with the loop, making sure to respect the polarity of the current signal.