Applications of wireless SAW sensing in the steel industry

Three novel applications of surface acoustic wave (SAW) sensor systems in the steel industry are presented: radio frequency identification (RFID) and temperature monitoring of slide gate plates, monitoring of the temperature inside a lining of a metallurgical vessel and RFID tagging of slag ladles. The motivation, the system requirements and constraints of the sensor design and the sensor integration are discussed. Results of field trials of the SAW sensor systems within the steel plants are presented.