A
Hello all,
I started the loop checking with ma source & multimeter since I don't have HART communicator and pressure calibrator. I connected the PT, ma source and multimeter in series to DCS. I adjusted the current from ma source but I got the reading erratic reading in DCS. Shall I connect the TX in series with ma source to DCS for loop checking. What will happen if I connect ma source parallel to TX. In either case I am giving external supply. Please guide me.
I started the loop checking with ma source & multimeter since I don't have HART communicator and pressure calibrator. I connected the PT, ma source and multimeter in series to DCS. I adjusted the current from ma source but I got the reading erratic reading in DCS. Shall I connect the TX in series with ma source to DCS for loop checking. What will happen if I connect ma source parallel to TX. In either case I am giving external supply. Please guide me.