APP NOTE: A Guide to Selecting the Right Isolator

The ins and outs of isolation: A guide to selecting the right isolator

Acromag manufactures a variety of isolators to provide a cost-effective solution for many applications. The primary function of the isolator is to eliminate ground loops that may exist between two or more instruments. A classical application isolates the control room equipment (computers, PLC, DCS etc.) from field devices which may have different ground potentials. In addition to breaking up groundloops, the isolators protect control room equipment from damaging transient spikes and noise generated in the field. Choosing the proper and most cost-effective isolator requires an understanding of the application and consideration of future expansion requirements.