Safety Conventions - Pepperl+Fuchs Barcon PPC Operating Instructions Manual

Safety conventions

In order to highlight safety-relevant or alternative operating procedures in the manual,
the following conventions have been used, each indicated by a corresponding icon in
the margin.
Symbol Meaning
Note!
A note highlights actions or procedures which, if not performed correctly, may
indirectly affect operation or may lead to an instrument response which is not planned
Note!
Caution!
Caution highlights actions or procedures which, if not performed correctly, may lead to
personal injury or incorrect functioning of the instrument
Caution!
Warning!
A warning highlights actions or procedures which, if not performed correctly, will lead
to personal injury, a safety hazard or destruction of the instrument
Warning!
Device certified for use in explosion hazardous area
If the device has this symbol embossed on its name plate it can be installed in an
explosion hazardous area
Explosion hazardous area
Symbol used in drawings to indicate explosion hazardous areas.
• Devices located in and wiring entering areas with the designation "explosion
hazardous areas" must conform with the stated type of protection
Safe area (non-explosion hazardous area)
Symbol used in drawings to indicate, if necessary, non-explosion hazardous areas.
• Devices located in safe areas stiill require a certificate if their outputs run into
explosion hazardous areas.
Direct voltage
A terminal to which or from which a direct current or voltage may be applied or
supplied
Alternating voltage
A terminal to which or from which an alternating (sine-wave) current or voltage may be
applied or supplied
Grounded terminal
A grounded terminal, which as far as the operator is concerned, is already grounded
by means of an earth grounding system
Protective grounding (earth) terminal
A terminal which must be connected to earth ground prior to making any other
connection to the equipment
Equipotential connection (earth bonding)
A connection made to the plant grounding system which may be of type e.g. neutral
star or equipotential line according to national or company practice
Barcon LHC/PPC (HART)
Safety conventions
Safety conventions
Explosion protection
Electrical symbols
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