Safety Conventions And Icons - Endress+Hauser Levelflex M FMP40 Operating Instructions Manual

Levelflex M FMP40 with HART/4...20 mA
Endress+Hauser
1.4

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
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Warning!
A warning highlights actions or procedures which, if not performed correctly, will lead to personal
injury, a safety hazard or the destruction of the device.
"
Caution!
Caution highlights actions or procedures which, if not performed correctly, may lead to personal
injury or incorrect functioning 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.
Explosion protection
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, according to the approval.
-
Hazardous areas
This symbol is used in the drawings of these Operating Instructions to indicate hazardous areas.
Devices in hazardous areas, or cables for such devices, must have appropriate explosion protection.
Safe area (non-hazardous area)
.
This symbol is used in the drawings of these Operating Instructions to indicate non-hazardous areas.
Devices in the non-hazardous area also have to be certified if connecting cables lead into the
hazardous area.
Electrical symbols
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Direct voltage
A terminal to which DC voltage is applied or through which direct current flows.
&
Alternating voltage
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 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 connection cables
t >85°C
States that the connection cables must be resistant to a temperature of at least 85 °C.
Safety instruction
For safety instructions refer to the manual for the appropriate instrument version.
Safety instructions
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