Who can read and edit this article Thus the greatest distribution was gained now by the methods based on transformation of elastic deformations in an electric signal. In such systems with resistance strain gauge transducers in which the elastic deformation caused by mechanical tension in a controlled detail, will be transformed to change of resistance of the transducer are used. Systems in which as primary measuring resistance strain gauge transducers are used, as a whole are very difficult, with a large number of elements located on rotating to a shaft. In view of complexity such systems have low reliability. In addition such systems possess low maintainability as to replace the failed transducer in ship conditions it isn't possible. As operating experience the resistance strain gauge of converters showed that in three years of operation about 40% from them fails.