What it is and where it fits
The Siemens 7ME3960-0WS50 is a stainless steel mounting kit for the SITRANS FS220 ultrasonic flowmeter family, designed for high precision size C sensors. It provides a single enclosure that holds one pair of sensors, with a spacer bar included to maintain the correct transducer separation. The mounting strap for the enclosure is not included and must be sourced separately. This is a class C product under Siemens' classification — manufactured and produced to order, meaning it is not a standard off-the-shelf stocked item. It cannot be reused or returned against credit once configured for a specific installation.
Sourcing and lifecycle reality
The product is not RoHS-compliant, which may affect its eligibility for installations governed by RoHS directives. REACH Article 33 candidate list information is available from Siemens if required for downstream compliance reporting. Export control classification is AL: N / ECCN: EAR99I, meaning it is not subject to stringent export licensing under normal circumstances.
What the ratings mean for fit
The kit is specific to size C sensors in the SITRANS FS220 ultrasonic flowmeter line. If you are retrofitting or replacing an existing installation, verify that your transducer pair is size C — the spacer bar sets the fixed separation distance for that sensor size. The single enclosure format means one enclosure per pair of sensors, so a dual-path measurement point requires two of these kits. Stainless steel construction suits washdown environments and corrosive process areas — typical for water/wastewater, chemical, or food-and-beverage metering installations where the flowmeter head is exposed to moisture or cleaning agents.