Safety instructions Gammapilot M FMG60 with FOUNDATION Fieldbus
8 Endress+Hauser
1.5 Notes on safety conventions and icons
In order to highlight safety-relevant or alternative operating procedures in the manual, the following
conventions have been used, each indicated by a corresponding symbol in the margin.
Safety instructions
#
Warning!
Indicates an action or procedure which, if not performed correctly, can result in serious personal injury,
a safety hazard or the destruction of the device.
"
Caution!
Indicates an action or procedure which, if not performed correctly, can result in personal injury or the
incorrect operation of the device.
!
Note!
Indicates an action or procedure which, if not performed correctly, can have
an indirect effect on operation or trigger an unexpected response on the part of the device.
Explosion protection
0
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
-
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 still require a certificate if their outputs run into explosion hazardous areas
Electrical symbols
%
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
)
Ground connection
A grounded terminal, which as far as the operator is concerned, is already grounded by means of an
earth grounding system
*
Protective ground connection
A terminal which must be connected to ground prior to making any other connection to the equipment.
+
Equipotential connection
A connection that has to be connected to the plant grounding system:
This may be a potential equalization line or a star grounding system depending on national or company
codes of practice.
Temperature resistance of the connecting cables
States that the connecting cables must be resistant to a temperature of at least 85 °C.
t >85°C
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