Cerabar M HART Safety instructions
Endress+Hauser 5
1.4 Notes on safety conventions and icons
In order to highlight safety-specific or alternative operating procedures in the manual, the following
conventions have been used, each indicated by a corresponding icon in the margin.
Symbol Meaning
#
Warning!
A warning highlights actions or procedures which, if not performed correctly, will lead to
serious personal injury, a safety hazard or the destruction of the device.
"
Caution!
A caution highlights actions or procedures which, if not performed correctly, may lead to
personal injury or the incorrect operation of the device.
!
Note!
A note highlights actions or procedures which, if not performed correctly, can have an
indirect effect on operation or trigger an unexpected response on the part of the device.
0
Explosion-protected, type-examined equipment
If the device has this symbol embossed on its nameplate, it can be used in a hazardous area
or a non-hazardous area, depending on the approval.
-
Hazardous area
Symbol used in drawings to indicate hazardous areas.
– Devices used in hazardous areas must possess an appropriate type of protection.
.
Safe area (non-hazardous area)
Symbol used in drawings to indicate non-hazardous areas.
– Devices used in hazardous areas must possess an appropriate type of protection. Cables
used in hazardous areas must meet the necessary safety-related characteristic quantities.
%
Direct current
A terminal to which DC voltage is applied or through which direct current flows.
&
Alternating current
A terminal to which alternating voltage (sine-wave) is applied or through which alternating
current flows.
)
Ground connection
A grounded terminal which, as far as the operator is concerned, is grounded by means of a
grounding system.
*
Protective ground terminal
A terminal which must be connected to ground prior to establishing any other connections.
+
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.
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