Electrical Symbols; Tool Symbols; Symbols For Certain Types Of Information - Endress+Hauser Levelflex FMP51 Operating Instructions Manual

Important document information
8
Symbol Meaning
CAUTION
CAUTION
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in minor
or medium injury.
A0011191-EN
NOTICE
NOTICE
This symbol contains information on procedures and other facts which do not result in personal
injury.
A0011192-EN
1.2.2

Electrical symbols

Symbol Meaning
Direct current
A terminal to which DC voltage is applied or through which direct current flows.
A0011197
Alternating current
A terminal to which alternating voltage (sine-wave) is applied or through which alternating current flows.
A0011198
Ground connection
)
A grounded terminal which, as far as the operator is concerned, is grounded via a grounding system.
A0011200
Protective ground connection
*
A terminal which must be connected to ground prior to establishing any other connections.
A0011199
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.
A0011201
1.2.3

Tool symbols

Symbol Meaning
Torx screwdriver
A0013442
Flat blade screwdriver
A0011220
Phillips head screwdriver
A0011219
Allen key
A0011221
Hexagon wrench
A0011222
1.2.4

Symbols for certain types of information

Symbol Meaning
Allowed
Indicates procedures, processes or actions that are allowed.
A0011182
Preferred
Indicates procedures, processes or actions that are preferred.
A0011183
Forbidden
Indicates procedures, processes or actions that are forbidden.
A0011184
Levelflex FMP51, FMP52, FMP54
Endress+Hauser