GESTRA NRGT 26-1 Installation Instructions Manual Download Page 6

Page: 6 / 24

See Fig. 2

NRGT 261, NRGT 261S

Technical Data

Type Approval N°

NRGT 26-:

TÜV · WRS · 02-39

NRGT 26-S:

LR 98/20075

RINA ELE/30298/2

GL 99249-96HH

BV 067/AO BV

NKK A-556

DNV A-8394

KR HMB 0690-MS002

Max. service pressure

32 bar g at 238 °C

Connections

NRGT 26-:

Screwed ¾" BSP, DIN ISO 228-

NRGT 26-S:

Flanged DN 50, PN 40, DIN 2635

Materials

Case:

Die cast aluminium 3.26 (G AlSi8Cu3)

Stem:

S. S. .457 CrNiMoTi7-2-2

Flange:

Forged steel .0460 P250GH

Measuring electrodes: S. S. .457 CrNiMoTi7-2-2

Electrode insulation:

PTFE

Spacer disc:

PTFE (design for marine applications)

Mains supply

230 V +/- 0 %, 50/60 Hz

5 V +/- 0 %, 50/60 Hz (option)

24 V +/- 0 %, 50/60 Hz (option)

24 V DC

Length supplied / measuring range

NRGT 261

Max. installation length at 238 °C

Measuring range

  300
  400
  500
  600
  700
  800
  900
000
00
200
300
400
500
2000

  275
  375
  475
  575
  675
  775
  875
  975
075
75
275
375
475
975

  36
  420
  526
  63
  737
  842
  947
053
57
262
366
47
579
2099

  373
  477
  583
  688
  794
  899
004
0
24
39
423
528
636
256

NRGT 261 S

Max. installation length at 238 °C

Measuring range

See Fig. 3

Summary of Contents for NRGT 26-1

Page 1: ... GESTRA Steam Systems GESTRA NRGT 26 1 NRGT 26 1S Installation Instructions 810213 04 Level electrode NRGT 26 1 NRGT 26 1 S ...

Page 2: ...of supply 5 System description 5 Function 5 Designs 5 NRGT 26 1 13 NRGT 26 1S 13 Attention 13 Note 13 Tools 13 Examples of installation 14 Key 15 Installation NRGT 26 1 NRGT 26 1S 6 7 Corrosion resistance 7 Sizing 7 Name plate marking 8 Dimensions 9 Technical Data NRGT 26 1 NRGT 26 1S 10 Key 12 Design NRGT 26 1 NRGT 26 1S 11 Key 12 Functional Elements ...

Page 3: ...ng range 18 Note 18 Contents continued Commissioning Page Danger 21 Disposal 21 Decommissioning NRGT 26 1 NRGT 26 1S 19 Note 19 Operation Fault finding list for troubleshooting 20 Operational Malfunctions Factory setting NRGT 26 1 17 Factory setting NRGT 26 1S 17 Establish active measuring range control range 17 Attention 17 Basic Setting Declaration of conformity 22 Annex ...

Page 4: ...of electric shock Cut off power supply before fixing or removing the housing cover Usage for the intended purpose Use level electrodes NRGT 26 1 and NRGT 26 1S only for indicating liquid levels Safety note The equipment must only be installed and commissioned by qualified and competent staff Retrofitting and maintenance work must only be performed by qualified staff who through adequate training h...

Page 5: ...t which flows through the plates changes proportionally to the level A dielectric is defined as an insulating substance which excludes many liquids such as water In order to receive a useful measuring result the measuring rod which is submerged to varying depths in the liquid must be completely insulated After the calibration of the zero point measuring range 0 100 the level can be read off from a...

Page 6: ... Measuring electrodes S S 1 4571 CrNiMoTi17 12 2 Electrode insulation PTFE Spacer disc PTFE design for marine applications Mains supply 230 V 10 50 60 Hz 115 V 10 50 60 Hz option 224 V 10 50 60 Hz option 24 V DC Length supplied measuring range NRGT 26 1 1 Max installation length at 238 C 2 Measuring range 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 2000 275 375 475 575 675 775 875 97...

Page 7: ...fuse Tmax 102 C Sensitivity Range 1 Water 0 5 µS cm Range 2 Water 20 µS cm Range 3 Fuel oil EL εr 2 3 Output 4 20 mA level proportional electrically insulated max load 500 Ω Indicators and adjustors 2 red LEDs for level 0 or level 100 within the measuring range 1 green LED for level between 0 and 100 of measuring range 1 code switch for selecting the measuring range 2 trimmer potentiometers for sm...

Page 8: ...en des Deckels Gerät freischalten Betriebsanleitung beachten Vor Öffnen des Deckels Gerät freischalten Betriebsanleitung beachten 50 60 Hz 5VA GB Reg Design 2 053 113 US Pat 5 719 342 Design 383 403 GB Reg Design 2 053 113 US Pat 5 719 342 Design 383 403 H _ _ _ _ _ _ _ _ _ _ mm 4 20 mA 500 24 V 230 V 115 V GESTRA AG D 28215 Bremen 24 VDC IP 65 IP 65 Pmax Pmax Tmax Tmax NRGT 26 1 TÜV WRS 02 391 PN...

Page 9: ... NRGT 26 1S G 3 4 ISO 228 1 173 140 26 37 1 Tiefe 70 mm 42 GESTRA Steam Systems GESTRA NRGT 26 1 338 337 5 339 173 140 173 62 140 3 4 b 70 b 70 42 BSP 37 1 2 26 Flange DN 50 PN 40 42 Technical Data continued Dimensions Fig 3 Fig 2 2 4 constant length no elongation A F ...

Page 10: ...10 GESTRA Steam Systems GESTRA NRGT 26 1S GESTRA Steam Systems GESTRA NRGT 26 1 Design Fig 4 Fig 6 N1 N 10 0 5 33 BSP DIN 228 NRGT 26 1 NRGT 26 1S A F A C B G F E D A Fig 5 ...

Page 11: ...11 Functional Elements NRGT 26 1 NRGT 26 1S N H GESTRA NRGT 26 1 GESTRA Steam Systems 1 23 4 6 7 8 9 0 5 1 2 3 4 5 Q L Fig 8 Fig 7 H I J I K L M N O P Q R U T S Shown 24 115 230 V AC version ...

Page 12: ... 1 5 J Housing cover K Measuring range switch L Potentiometer for lower measuring point 4 mA M LED Level 0 N LED Level 0 100 O LED Level 100 P Potentiometer for upper measuring point 20 mA Q Terminal lugs for voltage measurement between 0 7 V DC level proportional R Thermal fuse Tmax 102 C S Terminal strip T PE connection U Plug Key 1 NRGT 26 1 Max length of installation at 238 C 2 NRGT 26 1 Measu...

Page 13: ...trode 3 Apply a light smear of silicone grease e g DOW Corning 111 Compound to electrode thread A 4 Screw level electrode into threads or flange provided on vessel or boiler standpipe and tighten with a 41 mm open end spanner The torque required is 160 Nm when cold NRGT 26 1S 1 Check seating surfaces and place flat gasket on connection standpipe 2 Place flange E together with level electrode onto ...

Page 14: ... Fig 11 20 20 24 5 24 5 20 Fig 9 Fig 10 DN 50 90 DN 50 BSP BSP BSP BSP 10 20 90 90 20 20 20 10 20 DN 20 DN 20 Fig 12 20 BSP 10 20 1500 centre distance 2 3 4 6 0 5 1 2 9 3 5 4 1 5 4 0 2 DN 20 1 2 3 4 6 0 5 Examples of installation 8 0 7 ...

Page 15: ...nt regulations must be considered 3 Vent hole 4 High water HW 5 Electrode rod d 15 mm 6 Protection tube DN 80 7 Protection tube DN 100 8 Electrode distance 14 mm LW 9 Electrode distance 40 mm LW 0 Low water LW Reducer K 88 9 x 3 2 42 4 x 2 6 W to DIN 2616 part 2 Reducer K 114 3 x 3 6 48 3 x 2 9 W to DIN 2616 part 2 Key Installation continued ...

Page 16: ...ve terminal strips S from board 7 Connect terminal strip according to wiring diagram connect PE connection T 8 Plug in terminal strips S 9 Install cable entry I 10 Replace housing cover J insert screws H and fasten NRGT 26 1 NRGT 26 1S Fuse supply cables with 250 mA slow blow Tools Attention Wiring diagram Screwdriver for cross head screws size1 Screwdriver for slotted screws size 2 5 completely i...

Page 17: ...00 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 3 3 3 4 4 4 4 4 5 5 5 5 5 5 5 5 6 6 6 6 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 Lower measuring point 26 Attention If X is clearly smaller than 2 set switch K one step back Establish active measuring range control range A control range may be established within the measuring range of the electrode Establish the length of the control...

Page 18: ...g points Check wiring 1 Turn on power to the equipment The LED M of the electrode NRGT 26 1 will light up if the electrode is exposed Fig 6 Apply mains voltage 1 Fill boiler or vessel with liquid until the upper measuring point is reached and wait for 30 secs internal attenuation 2 Turn potentiometer P to the right until only the red LED O lights up 3 Turn potentiometer P to the left until the gre...

Page 19: ... 602 TRD 604 EN 12952 EN 12953 or other national regulations or according to the guidelines of classification societies NRGT 26 1 NRGT 26 1S Note Should malfunctions occur during the commissioning procedure refer to chapter Operational Malfunctions on page 20 in order to analyse and correct them ...

Page 20: ...edy Replace board ref no 391360 Equipment does not work accurately Fault Electrode has been installed without protection tube The protection tube serves as reference electrode Remedy Install protection tube Fault The vent hole in the protection tube does not exist is obstructed or flooded Remedy Check protection tube and if necessary provide vent hole Fault The isolating valves of the external mea...

Page 21: ...onents boards must be disposed of separately For the disposal of the level electrode observe the pertinent legal regulations concerning waste disposal 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 ...

Page 22: ...lines Low Voltage Directive LVD 73 23 EEC version 93 68 EEC Directive of Electromagnetic Compatibility EMC 89 336 EEC version 93 68 EEC LVD standard EN 50178 EMC standard EN 50081 2 EN 50082 2 This declaration is no longer valid if modifications are made to the equipment without consultation with us Bremen 19th March 2004 GESTRA AG Dipl Ing Lars Bohl Quality Assurance Representative ...

Page 23: ...23 For your notes ...

Page 24: ...2 Fax 00 34 91 4 13 67 47 5 15 20 36 E mail aromero flowserve com España Flowserve DALCO Steam Products 2601 Grassland Drive Louisville KY 40299 Tel 00 15 02 4 95 01 54 4 95 17 88 Fax 00 15 02 4 95 16 08 E mail dgoodwin flowserve com USA Portugal Flowserve Portuguesa Lda Av Dr Antunes Guimarães 1159 Porto 4100 082 Tel 0 03 51 22 6 19 87 70 Fax 0 03 51 22 6 10 75 75 E mail jtavares flowserve com Po...

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