what is loop power instrumentation
Loop Powered typically means that you have a singe, two-wire, in-line sensor, (transmitter, transducer), that derives it's operating power via the two wires, and modulates the loop current based on the process to be measured.epends on your definition of branch-off. You can have a power supply that is capable of supplying multiple loops, however, EACH sensor is supplied by ONE loop. You cannot power more than one sensor off a loop.... As JRaef put it, each loop supply is limited as to what it will supply.