Instruction Manual

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A2-4
IM 01R04B04-00E-E 8th edition March 01, 2011 -00
All Rights Reserved. Copyright © 2003, Rota Yokogawa
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The environmental limits of the Yokogawa ROTAMASS 3 Series Coriolis Mass Flow and Density Meter are
specied in the User’s Manual, ROTAMASS 3 Series Coriolis Mass Flow and Density Meter, Integral Type
RCCT3, Remote Type RCCF31 + RCCS3, Remote Type RCCR31 + RCCS3, IM 01R04B04-00E-E.
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The application limits of the Yokogawa ROTAMASS 3 Series Coriolis Mass Flow and Density Meter are
specied in the User’s Manual, ROTAMASS 3 Series Coriolis Mass Flow and Density Meter, Integral Type
RCCT3, Remote Type RCCF31 + RCCS3, Remote Type RCCR31 + RCCS3, IM 01R04B04-00E-E. If the
owmeter is used outside of the application limits the reliability data listed in A2.2.9 becomes invalid.
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Safety Freedom from unacceptable risk of harm
Functional Safety The ability of a system to carry out the actions necessary to achieve or to maintain a
dened safe state for the equipment / machinery / plant / apparatus under control of
the system
Basic Safety The equipment must be designed and manufactured such that it protects against
risk of damage to persons by electrical shock a other hazards and against
resulting re and explosion. The protection must be effective under all conditions of
the nominal operation and under single fault condition
Verication The demonstration for each phase of the life-cycle that the (output) deliverables of
the phase meet the objectives and requirements specied by the inputs to
the phase. The verication is usually executed by analysis and / or testing
Validation The demonstration that the safety-related system(s) or the combination of safety-
related system(s) and external risk reduction facilities meet, in all respects,
the Safety Requirements Specication. The validation is usually executed by testing
Safety Assessment The investigation to arrive at a judgment - based on evidence - of the safety
achieved by safety-related systems
Further denitions of terms used for safety techniques and measures and the description of
safety related systems are given in IEC 61508-4.
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FMEDA Failure Mode, Effects and Diagnostic Analysis
SIF Safety Instrumented Function
SIL Safety Integrity Level
SIS Safety Instrumented System
SLC Safety Lifecycle