Part of the company’s FS Functional Safety Series, Model STZ is designed for use in Safety Instrumented Systems (SIS) where dangerous processes occur. The temperature transmitter was certified by Exida to ensure conformance with strict IEC 61508:2010 standards for safety-related applications. It offers a dual-sensor input that reduces process interruptions. Backup and fail-over protection allow either of the sensors or inputs to be designated as the primary measurement. The secondary input acts as the backup sensor in case of primary sensor failure. The dual-sensor input also allows for average and differential measurements along with high-select and low-select options.