Cerabar M, Deltabar M, Deltapilot M / 4...20 mA HART Safety instructions
Endress+Hauser 5
1.4 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 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!
Caution highlights actions or procedures which, if not performed correctly, can 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
This symbol is used in the drawings of these Operating Instructions to indicate hazardous areas.
– Devices used in hazardous areas must possess an appropriate type of protection.
.
Safe area (non-hazardous area)
This symbol is used in the drawings of these Operating Instructions 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 already grounded by means of a
grounding system.
*
Protective ground connection
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.
Connecting cable immunity to temperature change
Indicates that the connecting cables have to withstand a temperature of 85°C at least.
Safety instructions
Observe the safety instructions in the associated Operating Instructions.
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