Emerson Process Management has expanded the family of SIS sensors by
adding Micro Motion Coriolis flowmeters
Changing the landscape of safety technology with new complete-loop smart SIS
solutions, Emerson Process Management has expanded the family of SIS sensors by
adding Micro Motion Coriolis flowmeters. Along with Rosemount® 3051S SIS pressure
and 3144P SIS temperature transmitters, these Micro Motion® meters provide smart SIS
and integrate with the Emerson DeltaV™ SIS system, as well as SIS final control
elements like Fisher FIELDVUE® digital valve controller instruments, and expert safety
services. The Emerson smart SIS safety management solution is an extension of
PlantWeb® digital plant architecture.
First in the industry to employ digital intelligence and diagnostics from sensor to logic
solver to final control element, and to take an integrated complete-safety-loop approach,
Emerson now also offers Coriolis meters for use in up to SIL-2 applications.
While no Coriolis meter is yet SIL/SIS certified, Emerson Micro Motion® Coriolis meters
can be used in these applications by applying IEC 61511 prior-use methodology.
Following Exida FMEDA (Failure Modes, Effects and Diagnostic Analysis) report, Micro
Motion meters offer the best scores in SFF (Safe Failure Fraction) and λDU (Dangerous
Undetected failure rate), averaging two times better than other Coriolis meters.
Coriolis meters used in SIS loops offer many benefits to these applications:
• High availability since Micro Motion® Coriolis meters have no moving parts and no
requirement to recalibrate
• Lower cost of ownership because Micro Motion® Coriolis meters offer diagnostics
like flow calibration factor verification which allows for longer intervals between proof
tests
