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Summary of Contents for GESTRA NRG 16-11S
- Page 1 GESTRA Steam Systems NRG 16-11S English Installation Instructions 818790-00 Level Electrode NRG 16-11S...
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Page 2: Table Of Contents
Usage for the intended purpose ......................4 Safety note ............................. 4 Danger ..............................4 Attention ..............................4 Explanatory Notes Scope of supply ............................5 Description NRG 16-11S ......................... 5 Function ..............................5 System components ..........................5 Design ..............................5 Technical Data NRG 16-11S ............................6 Corrosion resistance .......................... - Page 3 Contents – continued – Page Examples of Installation NRG 16-11S ............................13 Key ...............................14 Electrical Connection NRG 16-11S ............................14 Wiring diagram .............................15 Voltage table ............................16 Note ..............................16 Tools ..............................16 Commissioning Check wiring ............................16 Apply mains voltage..........................16 Operation Low-level limiter ...........................17...
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Page 4: Important Notes
Important Notes Usage for the intended purpose Use level electrode NRG 16-11S only in conjunction with level switch NRS 1-7 for low-level limiting (low level alarm) on board of seagoing vessels, mobile offshore platforms or river boats. The equipment must not be used in explosion risk areas. -
Page 5: Explanatory Notes
Low level alarm ■ The NRG 16-11S is designed for use in conjunction with level switch NRS 1-7 (15 sec.) as a self- monitoring low level limiter with periodic self-checking (SMART) feature. Application in steam and pressurised hot-water plants in accordance with TRD 604, sheet 1 and sheet 2 (24 h/72 h operation) as well as EN 12952 and EN 12953. -
Page 6: Technical Data
GL 88091 HH RINA N° ELE/96695/1 LR 98/20076 BV 10618/Bo KR HMB06190-MS001 NKK 02A 012 Service pressure NRG 16-11S: 32 bar at 238°C Connection Flange, PN 40, DN 50 Materials Flange: 1.0460 C22.8 Measuring electrode: 1.4401, X5CrNiMo17-12-2 Electrode insulation: Gylon ®... -
Page 7: Corrosion Resistance
Technical Data – continued – Corrosion resistance Provided that the equipment is used for its intended purpose, its safety is not impaired by corrosion. Sizing The body must not be subjected to sharp increases in pressure. Welds and flanges of the electrode are designed to withstand dynamic loading (bending and alternating stress). -
Page 8: Dimensions Nrg 16-11S
Technical Data – continued – Dimensions NRG 16-11S Fig. 3 NRG 16-11S for marine applications... -
Page 9: Design
Design NRG 16-11S Fig. 4 Fig. 5... -
Page 10: Nrg 16-11S
Functional Elements NRG 16-11S " § & Fig. 6... -
Page 11: Key
Design / Functional Elements – continued – Electrode rod Bore Spring Electrode tip Grub screw Disk (Measuring surface extension) Retaining ring Flange seal Upper part of terminal box Seating surface Connecting standpipe " Screw M 4 § Cover Connection plate Sealing element &... -
Page 12: Installation
Installation NRG 16-11S, step 1 1. Screw electrode tip into measuring electrode , Fig. 4 2. Carefully determine required measuring length, taking minimum length into account. 3. Mark length of electrode tip 4. Unscrew electrode tip from measuring electrode and cut tip. -
Page 13: Examples Of Installation
Examples of Installation NRG 16-11S ≥ 14 DN 20 ≤ 90 ° ∅ 20 Fig. 7 DN 20 Fig. 8 DN 20... -
Page 14: Key
Reducer DIN 2616-2, K-88.9 x 3.2 – 42.4 x 2.6 W Electrical Connection NRG 16-11S Electrical connection via four pole connector. Note that screened four-core cable, e. g. I-Y(St)Y 2 x 2 x 0.8 or LIYCY 4 x 0.5 mm² is required for wiring the electrode. -
Page 15: Wiring Diagram
– continued – Wiring diagram NRS 1-7 1 2 3 8 9 10 1112 1 - 2 Fig. 9 Fig. 11 NRG 16-11S NRG 16-11S NRS 1-7 1 2 3 4 8 9 10 1112 1 - 2 Fig. 10 NRG 16-11S... -
Page 16: Voltage Table
Open-end spanner A. F. 18 (19) ■ Commissioning Check wiring Check whether the NRG 16-11S and the associated controller NRS 1-7 are wired in accordance with the wiring diagram. Fig. 9, Fig. 10 Apply mains voltage Apply mains voltage to level switch NRS 1-7. -
Page 17: Operation
Operation Low-level limiter Operation in combination with controller NRS 1-7 in steam and pressurised hot water plants to TRD 401, TRD 602, TRD 604, EN 12952, EN 12953 or other national regulations. Note Should malfunctions occur during the commissioning procedure refer to chapter ■... -
Page 18: Decommissioning
Decommissioning Danger Risk of severe burns and scalds to the whole body! Before removing the level electrode make sure that the vessel or measuring pot are depressurised (0 bar) and cooled down to room temperature (20 °C). Disposal Remove the level electrode and separate the waste materials in accordance with the material specification. - Page 19 For your notes...
- Page 20 Agencies all over the world: www.gestra.de GESTRA AG Münchener Straße 77 28215 Bremen Germany Telefon +49 421 3503-0 Telefax +49 421 3503-393 E-mail info@de.gestra.com www.gestra.de 818790-00/108cm · 2007 GESTRA AG · Bremen · Printed in Germany...
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