3
Contents
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Page
Factory settings
..................................................................................................................................13
Changing factory settings
Changing function and input for level electrode/transmitter ...................................................................14
Operating the level switch
Key to codes on seven-segment display ................................................................................................16
Establishing measuring range ..............................................................................................................17
Commissioning procedure
Setting parameters................................................................................................................................18
Setting the measuring range .................................................................................................................19
Operation, alarm and test
Indicators ..............................................................................................................................................20
Level controller NRR 2-50 Displays ....................................................................................................21
Level controller NRR 2-51 Displays ....................................................................................................21
Troubleshooting
Indication, diagnosis and remedy ..........................................................................................................22
Further Notes
Action against high frequency interference ............................................................................................23
Decommissioning / replacing the equipment .........................................................................................23
Disposal ................................................................................................................................................23
