Emerson Process Management's Rosemount 2120 vibrating fork liquid level switches have now been certified for SIL 2 functional safety with SIL 3 capability, meeting the most demanding safety requirements.
They have also now been approved for marine applications – such as oil and ballast control and HFO blending – by the American Bureau of Shipping (ABS), expanding on the existing Germanischer (GL) approval.
Emerson has also added more process connections (two-inch NPT, and Mobrey A and G flanges) to improve installation flexibility.
For safety critical applications, SIL 2 certification applies to the 2120 with NAMUR and 8—16mA outputs. Five plug-in outputs are available, providing a choice of switching functions.
SIL 2 also extends the time between proof tests, enabling process users to avoid additional shutdowns for safety testing.
Rosemount 2120 switches are popular for high and low level alarm and pump control duties in process applications.
