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紐倫堡5月24日新聞 來自西門子自動化和驅動（A&D）集團的新型Sitrans TH頭盔式溫度變送器產品線提供現(xiàn)場總線接口，新型Sitrans TH400與Profibus PA 和基金會現(xiàn)場總線都兼容，基金會現(xiàn)場總線包括LAS （Link Active Scheduler鏈路活動調度器）的調度能力以執(zhí)行備份總線主控功能。提供兩個模擬輸入模塊和一個PID（Proportional-Integral-Differential比例積分微分）功能模塊。這樣Sitrans TH400頭盔式溫度變送器可以用于基金會現(xiàn)場總線內部簡單的閉環(huán)控制任務，由于該溫度變送器設計緊湊小巧，適用于B型連接頭，并直接安裝在傳感器組件頂端。該新型現(xiàn)場總線變送器補充了現(xiàn)存的Sitrans TH head頭盔式變送器系列，包括萬用Sitrans TH100, Sitrans TH200以及Sitrans TH300。 登錄網站咨詢更多信息：www.siemens.com/sitransth。 Gerhard Stauß，Gleiwitzerstraße 555，90475 Nürnberg Tel.: +49 （911） 895-7945 Fax: +49 （911） 895-7906 E-Mail: gerhard.stauss@siemens.com original text： [COLOR=#708090]Head-mounted fieldbus transmitter for temperature measurement Nuremberg, May 24, 2007 The new Sitrans TH line of head-mounted temperature transmitters from Siemens Automation and Drives （A&D） offers fieldbus interfaces now. The new Sitrans TH400 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. Further information can be found on the Internet at: www.siemens.com/sitransth Informationsnummer: A&D SC 200705.1331e Gerhard Stauß，Gleiwitzerstraße 555，90475 Nürnberg Tel.: +49 （911） 895-7945 Fax: +49 （911） 895-7906 E-Mail: gerhard.stauss@siemens.com[/COLOR]