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NRS 2-50, NRS 2-51 - Installation & Operating Manual -
819179-05
Contents
Page
Important notes
Usage for the intended purpose ...............................................................................................................4
Function ..................................................................................................................................................4
Safety note ..............................................................................................................................................4
Directives and standards
VdTÜV Bulletin “Wasserstand 100” (Water Level 100) .............................................................................5
LVD (Low Voltage Directive) and EMC (Electromagnetic Compatibility) .....................................................5
ATEX (Atmosphère Explosible) .................................................................................................................5
UL/cUL (CSA) approval ............................................................................................................................5
Notes on the Declaration of Conformity/Manufacturer’s Declaration ..................................................5
Approval for marine use ..........................................................................................................................5
Technical data
NRS 2-50, NRS 2-51 ...............................................................................................................................6
Product package .....................................................................................................................................7
Name plate/identification ........................................................................................................................8
Installation
Installation in the door of the control cabinet ...........................................................................................9
Dimensions of the NRS 2-50, NRS 2-51 ................................................................................................10
Key .......................................................................................................................................................10
Installation in a control cabinet ..............................................................................................................10
In the control cabinet: Wiring the level switch
Wiring diagram for level switch NRS 2-50 .............................................................................................11
Key .......................................................................................................................................................11
Wiring diagram for level switch NRS 2-51 .............................................................................................12
Key .......................................................................................................................................................12
Supply voltage connection .....................................................................................................................13
Connecting the output contacts .............................................................................................................13
Connecting the level electrode/level transmitter ....................................................................................13
Connecting the actual value output ......................................................................................................13
Tools .....................................................................................................................................................13
