Notes On Safety Conventions And Icons - Endress+Hauser Cerabar M PMC51 Operating Instructions Manual

Cerabar M Analog
Endress+Hauser
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.
%
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.
>
t 85°C
=
Safety instructions
Observe the safety instructions in the associated Operating Instructions.
Safety instructions
5