A universal modeling method for network intelligent sensors based on IEEE 1451.0 standard is presented to improve the networking interoperability of intelligent sensors.The universal network intelligent sensor frameworks including static use-case model, dynamic behaviour models and system deployment model are described by using Unified Modeling Language(UML). Then, an insulator contamination status online monitoring sensor is rapidly constructed from these frameworks. Research results indicate that the UML-based modeling method could be used to effectively describe the simplified intelligent sensor model based on IEEE 1451 standards.The model shows well universal and expandable characteristics and can correlate different physical interfaces and realize network interoperability.Moreover, the development time for IEEE 1451-based network intelligent sensors has decreased over 60% as compared with those traditional methods.