Important Document Information; Document Conventions - Endress+Hauser Levelflex FMP56 Manual

Levelflex FMP56, FMP57

Document conventions

Endress+Hauser

Important document information

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
A0011201
line or a star grounding system depending on national or company codes of practice.
Symbols and notation 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
Tip
Indicates additional information.
A0011193
Reference to documentation
Refers to the corresponding device documentation.
A0011194
Reference to page
Refers to the corresponding page number.
A0011195
Reference to graphic
Refers to the corresponding graphic number and page number.
A0011196
Symbols and notation in graphics
Symbol Meaning
1,2,3 ... Item numbers
A, B, C, ... Views
A-A, B-B, C-C, ... Sections
Hazardous area
-
Indicates a hazardous area.
A0011187
Safe area (non-hazardous area)
.
Indicates a non-hazardous location.
A0011188
3