Nuremberg, May 25, 2007 — The Sitrans TH line of head-mounted temperature transmitters from Siemens Automation and Drives (A&D) is compatible with either Profibus PA or Foundation Fieldbus. The Foundation Fieldbus version includes LAS (Link Active Scheduler) capability to perform the backup bus master function. It provides two analog input blocks and one PID (Proportional-Integral-Differential) function block. Thus the Sitrans TH400 can be used for simple closed-loop control tasks within a Foundation Fieldbus segment.Due to its compact size and design the temperature transmitter is suitable for small Form B connection heads and also direct mounting on top of the sensor unit.
The new fieldbus transmitter supplements the already existing series of Sitrans TH head-mounted transmitters which include the universal Sitrans TH100, Sitrans TH200 and Sitrans TH300.