The M100-DA and DV transducers isolate the DC Input signal from the DC Output signal, which is directly proportional to the input signal. A wide range of D.C. Current and Voltage outputs ar offered. Typically these isolators can be used to prevent earth loops, which occur when a measuring source, that is earthed, is connected to a computer or data logger that is also earthed. Another common use is to provide isolation on the inputs to a PLC.