SAW-RFID and temperature monitoring of slide gate plates

A sensor system for radio-frequency identification (RFID) and temperature monitoring of slide gate plates was developed and tested at a continuous casting facility in a steel plant. The sensor system, which is based on surface acoustic wave (SAW) technology, was chosen because this technology is well suited to the elevated temperature loads and the harsh production environment. This paper describes the assembly of the sensor system and the integration of the SAW transponder into the slide gate plate. Results of the system test and subsequent laboratory analysis are also presented.