Introduction; Scope Of The Document - Siemens SITRANS F Additional Operating Instructions

INTRODUCTION

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1.1 Scope of the document

This document is the safety manual for the SITRANS FX330. Its content applies if the
measurement device is operated in SIL mode or prepared for SIL mode, respectively.
General hint
This vortex flowmeter is a functionally safe flowmeter. It may be deployed within safety critical
systems requiring the safety function (for details refer to
page 8) at a safety integrity level 2, in homogeneous redundant configuration at safety integrity
level 3 (for more information about homogeneous redundancy refer to
10).
In case of a detected potentially hazardous failure, the system performs a safety reaction to
bring the device to a safe state, which is indicated by a failure current on the current output.
Depending on the failure, the device will resume the measuring mode as soon as the root cause
of the failure disappears (transient application dependent failure) or remains in failure mode
(persistent system integrity failure). In the latter case, operator's interaction is required to
restart measuring mode.
For safe operation, the operator / integrator must fulfil some conditions. These conditions are
defined as Safety Application Conditions (SAC). For further information refer to
application conditions (SAC)
INFORMATION!
The data in this supplement only contains the data applicable to the SIL approval. The technical
data for the standard version in the handbook (document [N1]) shall be valid, provided that it is
not rendered invalid or replaced by this supplement. If necessary, parts of [N1] are referenced
herein.
INFORMATION!
Installation, commissioning and maintenance may only be carried out by properly trained and
authorised personnel.
INFORMATION!
Configuration for SIL mode operation needs a login as role "Expert" (for details refer to [N1],
chapter "Security and permissions"]. Nevertheless the operator shall protect the flowmeter
against unauthorised access.
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on page 8.
www.siemens.com/flow
Specification of the safety function
Operation modes
Safety
10/2017 - A5E40875009-AB EN
SITRANS FX330
on
on page