Osna is , a new delhi-based manufacturer. Osna electronics, offers manufactures loop-powered isolators. These loop power isolators enable the users to avoid running an additional 24 v dc power supply. Some of the technical features of these loop power insulators are:these use the loop energy to transform and isolate the incoming field signal. High density of isolating 3 channels of a 420 ma signals is achieved in a single 17.5 mm housing, or an 8 channel isolation in an euro card; . The most economical method of attaining galvanic isolation between incoming field signals from sensors and the plc or dcs is achieved by soldering the loop-powered isolator modules onto the standard printed circuit boards. Precision dimensioning of the loop-powered isolator allows it to draw a very minimum of power for isolation from the incoming signal without appreciable distortion to the signal. By using very low loss troidal transformers and a patented osna circuitry, a 0.1 percent transfer accuracy is achieved by using very low loss troidal transformers and a patented osna circuitry.
