Safety instructions Smartec S CLD132
6 Endress+Hauser
1.4 Return
If the transmitter has to be repaired, please return it cleaned to the sales centre responsible.
Please use the original packaging, if possible.
Please enclose the completed "Declaration of contamination" (copy the second last page of these
Operating Instructions) with the packaging and the transportation documents.
No repair without completed "Declaration of contamination"!
1.5 Notes on safety conventions and symbols
Safety symbols
Electrical symbols
#
Warning!
This symbol alerts you to hazards. They can cause serious damage to the instrument or to persons
if ignored.
"
Caution!
This symbol alerts you to possible faults which could arise from incorrect operation. They could
cause damage to the instrument if ignored.
!
Note!
This symbol indicates important items of information.
%
Direct Current (DC)
A terminal at which DC is applied or through which DC flows.
&
Alternating Current (AC)
A terminal at which (sine-form) AC is applied or through which AC flows.
)
Ground connecting
A terminal, which, from the user’s point of view, is already grounded using a grounding system.
*
Protective earth terminal
A terminal which must be grounded before other connections may be set up.
+
Equipotential connection
A connection which must be connected to the grounding system of the equipment.
This can be, i.e., a potential matching line of a star-shaped grounding system,
depending on national or company practice.
/
Protective insulation
The equipment is protected by double insulation.
b
Alarm relay
Input
Output
Constant voltage source
Temperature sensor
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