Flowserve NRG211-1 Level Probe Manuel d'utilisateur

1NRG 211-1A Siebe Group ProductInstallation Instructions 810425-00Level Probe Type NRG 211-1

10Technical data – level probeWeightLevel probe approx. 5.6 kgWelding standpipe approx. 4.5 kgTechnical data – preamplifierCaseTerminal box made of al

11InstallationWelding standpipeWeld standpipe inclined upwards by at least 5° onto vertical pipe to ensure that thestandpipe can completely empty if t

12NotenThe joint ring has serrated faces and silver coated rings at both endswhich must not be removed.ToolsnOpen-end spanner, A. F. 27 mmnScrewdriver

13WiringWiring diagramUse screened three-core cable, min. conductor size 0.5 mm², max. length 500 m.1. Lift up the retaining clip and remove the u

14Supply voltage 12 V DCMeasuring voltage 1– 10 V DCPinsFor resistance measurement: strip off conductorFor resistance measurement: Pt 1000Fixing screw

151. Switch on the mains supply and check whether the mains voltage is appliedacross the level switch. See installation instructions NRS 2-4 or NRS 2-

16Table 1 Measuring voltagesMeasuring voltage UMDecoding NRS 2-4 Decoding NRS 2-5≤ 0 V – 1 V Malfunction in probe Malfunction in probesupply line (sho

171. Unscrew fixing screw and remove terminal box cover. Fig. 22. Withdraw all terminals from pins.3. Unscrew fixing screw and remove board. F

18AnnexFault finding listWarningThe terminal strip of the NRS 2-4 /NRS 2-5 is live during operation. Thispresents the danger of electric shock.Cut off

19Fault: Defective temperature sensor.Remedy: Check the measuring voltage across terminals 2 and 3 of NRG 211-1.If the supply voltage 1 – 4 V check te

2DimensionsFig. 1~80~118∅ 43.5334.547897

20We hereby declare that the equipment NRG 211-1 conforms to the followingEuropean guidelines:nLV guideline 73/23/EWG version 93/68/EWGnEMC guideline

21Examples of InstallationBy customerWelding standpipe (GESTRA)BAKeyFig. 58788DN ≥ 100/4"DN ≤ 100/4"≈24∅ 63.5≈12∅ 63.5

22GESTRA Gesellschaften · GESTRA Companies · Sociétés GESTRA · Sociedades Gestra · Società GESTRAVertretungen weltweit · Agencies all over the world ·

3Parts DrawingsFig. 2I JKHGACEDBFLMNO

436251440Parts DrawingsFig. 35HP Q G R S

5StrainerMeasuring electrodeStuffing boxGroove for gasketLocking screwTransit protectionUpper part of connectorRetaining clipLower part of connectorFi

6ContentsSafety note...8Danger ...

7Contents – continued –Note ...

8Important NotesSafety NoteDangerWhen loosening the electrode live steam or hot water might escape.This presents the danger of severe injury. It is th

9Explanatory NotesSystem descriptionThe capacitance level probe NRG 211-1 serves as sensor for the level switchNRS 2-4 (high level) / NRS 2-5 (low lev