Does this mean the Rosemount 3051C, Rosemount 3051T, and Rosemount 3144P are “certified for use” per SIL 2?
No. The design of the Rosemount 3051C, 3051T and 3144P transmitters have PFD and SFF values that are in the SIL 2 category. However, to receive SIL 2 certification, the design must meet specific interpretations of IEC 61508. However, a device can be reviewed and approved for “applicability or use” in a SIL 1-4 SIS loop. IEC 61511 allows plants to use devices designed per IEC 61508 or to use devices proven-in-use. The Rosemount 3051C and 3144P are proven-in-use by our customers, and therefore to use these devices only the data described in Section 5 will be required.
