The Siemens 7ME3960-3MD00 is the mounting hardware kit for a portable high-precision transducer, Size C, used with the SITRANS FS220 ultrasonic flowmeter family. Legacy part number 1012FPH-PC cross-references directly. This isn't the flowmeter itself — it's the bracket and fixture set that holds the transducer against the pipe wall in clamp-on ultrasonic flow measurement. Out here in the grease, if you're swapping a transducer on a portable rig, this is the hardware that keeps it planted.
RoHS compliance is documented since January 1, 2010, and the REACH Article 33 candidate list information is available.