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Installation Instructions 818578-05

Level Electrode

NRG 16-11, NRG 17-11, NRG 19-11,

NRG 111-11

GESTRA Steam Systems

NRG 16-11

NRG 17-11

NRG 19-11

NRG 111-11

English

Содержание NRG 111-11

Страница 1: ...1 Installation Instructions 818578 05 Level Electrode NRG 16 11 NRG 17 11 NRG 19 11 NRG 111 11 GESTRA Steam Systems NRG 16 11 NRG 17 11 NRG 19 11 NRG 111 11 EN English ...

Страница 2: ...sign 6 NRG 16 11 NRG 17 11 NRG 19 11 NRG 111 11 step 1 17 NRG 16 11 NRG 17 11 NRG 19 11 NRG 111 11 step 2 17 Attention 17 Important notes 18 Tools 18 Installation NRG 16 11 NRG 17 11 NRG 19 11 7 NRG 111 11 8 Name plate marking 9 Dimensions NRG 16 11 NRG 17 11 NRG 19 11 10 11 Dimensions NRG 111 11 12 Technical Data NRG 16 11 NRG 17 11 NRG 19 11 NRG 111 11 13 Key 16 Design NRG 16 11 NRG 17 11 NRG 19...

Страница 3: ...iring 24 Apply mains voltage 24 Contents continued Commissioning Page Note on the Declaration of Conformity Declaration by the Manufacturer CE 26 Annex Low level limiter 25 Note 25 Operation Fault finding list for troubleshooting 25 Operational Malfunctions Danger 26 Disposal 26 Decommissioning NRG 16 11 NRG 17 11 NRG 19 11 19 NRG 111 11 20 Key 21 Examples of Installation ...

Страница 4: ...in explosion risk areas PED Pressure Equipment Directive 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 have achieved a recognised level of competence ATEX Atmosphère Explosible The equipment constitutes a simple item of electrical equipment ...

Страница 5: ...NRG 111 11 PN 320 1 Gasket 33 x 39 DIN 7603 1 4301 1 Sealing plug for M 20 connection 1 Surface extension disk with grub screw 1 Retaining ring 1 Installation manual Description NRG 16 11 NRG 17 11 NRG 19 11 NRG 111 11 The level electrode NRG 1 11 detects the min liquid level low level alarm in a steam boiler The operation of the electrode is based on the conductivity measuring principle using the...

Страница 6: ...re than 3 seconds A low level alarm will also be activated if the insulating seals placed between the electrodes and the body are no longer pressure tight allowing water to penetrate into the body However in this instance the alarm is caused by a malfunction of the electrode and confirmation should always be done by checking if there is water in the gauge glass The equipment combination NRG 1 11 a...

Страница 7: ...olyamid PA Terminal box 3 2161 G AISi8Cu3 optional Lengths available 500 mm 1000 mm 1500 mm 2000 mm 2500 mm 3000 mm Cell constant C 0 13 cm 1 with measuring surface extension 0 3 cm 1 without measuring surface extension Response sensitivity 10 µS cm at 25 C cell constant 0 3 cm 1 0 5 µS cm at 25 C cell constant 0 13 cm 1 Electrical connection Four pole connector cable gland M 16 terminal box made ...

Страница 8: ... 2 Electrode insulation Special ceramic material Terminal box 3 2161 G AISi8Cu3 Lengths available 500 mm 1000 mm 1500 mm 2000 mm 2500 mm 3000 mm pH value Max admissible 10 Cell constant C 0 13 cm 1 with measuring surface extension Response sensitivity 0 5 μS cm up to 400 μS cm at 25 C Electrical connection Terminal box made from aluminium cable glands M 20 2 Protection IP 65 to EN 60529 Max admiss...

Страница 9: ...i 311 C 592 F C 0 13 cm C 0 3 cm 1 1 Betriebsanleitung beachten See installation instructions Voir instructions de montage PN 63 PN160 PN 40 NRG 17 11 NRG 19 11 NRG 16 11 G 3 4 1 4571 IP65 Tmax 70 C 158 F 0525 GESTRA AG Münchener Str 77 D 28215 Bremen TÜV WB 05 354 Fig 3 Tamb 70 C 158 F Pmax Tmax NRG 111 11 G 1 1 4529 IP65 180 bar 2611psi 357 C 675 F 0525 mit Meßflächenvergrößerung with measuring ...

Страница 10: ... Dimensions NRG 16 11 NRG 17 11 NRG 19 11 Fig 5 NRG 17 11 NRG 19 11 without measuring surface extension 1500 85 272 Fig 4 NRG 16 11 with measuring surface extension 8 1500 23 165 85 BSP DIN EN ISO 228 1 BSP DIN EN ISO 228 1 36 36 ...

Страница 11: ...nsions NRG 16 11 NRG 17 11 NRG 19 11 continued Fig 6 NRG 17 11 NRG 19 11 with terminal box made from aluminium optional and measuring surface extension GESTRA Steam Systems GESTRA BSP DIN EN ISO 228 1 85 337 5 185 b 70 140 175 1500 36 ...

Страница 12: ...Technical Data continued Dimensions NRG 111 11 GESTRA Steam Systems GESTRA Fig 7 NRG 111 11 with measuring surface extension 185 500 1000 1500 2000 2500 3000 b 70 1 BSP DIN EN ISO 228 1 30 85 337 5 140 175 ...

Страница 13: ...13 Design Fig 11 NRG 16 11 NRG 17 11 NRG 19 11 NRG 111 11 Fig 9 110 30 75 14 Fig 8 Fig 10 1 5 7 2 3 4 6 9 8 0 a Fig 12 RA 3 2 RA 12 5 G A ISO 228 G1A ISO 228 33 0 5 ...

Страница 14: ...14 Functional Elements NRG 16 11 NRG 17 11 NRG 19 11 Fig 13 i h f e b c d g ...

Страница 15: ...15 Functional Elements continued NRG 111 11 optional for NRG 16 11 NRG 17 11 NRG 19 11 Fig 15 GESTRA SteamSystem s GESTRA Fig 14 j k l k m n o ...

Страница 16: ...e thread a Thermal insulation provided on site d 20 mm outside of thermal insulation of steam generating unit b Screw M 4 c Lid d Upper part of terminal box e Connecting plate f Sealing element g Contact plate for level electrode h Cable clamp i Cable gland M 16 PG 9 j Housing screws M 4 k Cable entry M 20 x 1 5 l Housing lid m Nut n PE connection o Terminal strip Design Functional Elements contin...

Страница 17: ...tep 1 1 Screw electrode tip 4 into measuring electrode 1 Fig 8 2 Carefully determine required measuring length taking minimum length into account 3 Mark length of electrode tip 4 4 Unscrew electrode tip 4 from measuring electrode 1 and cut tip 5 Screw electrode tip 4 into measuring electrode 1 and tighten Slide spring 3 along electrode tip 4 so that its bent end completely enters into small bore 2...

Страница 18: ...ler standpipe observe the relevant regulations n For typical installation examples refer to pages 19 20 n When mounting the electrode laterally make sure that the inclination angle does not exceed 45 and that the length of the electrode rod is limited to 1000 mm Fig 17 n If the electrode is installed outdoor it must be provided with a weather proof cover supplied by GESTRA As an alternative the le...

Страница 19: ... 11 NRG 17 11 NRG 19 11 DN100 Fig 18 20 20 DN 20 24 5 24 5 20 20 Fig 16 Fig 19 DN 50 BSP BSP BSP 20 3000 20 90 20 BSP 90 Fig 17 1 4 DN 20 DN 20 p q r s t m a x 1 0 0 0 2 0 1 4 14 45 p q t s r s p s t 10 w u x y x v w x y Centre distance ...

Страница 20: ...20 Examples of Installation continued NRG 111 11 Centre distance Fig 20 Fig 21 p q r t s 20 20 DN 50 1 BSP 20 90 10 u x y w DN 20 Fig 22 1 BSP 20 DN 20 DN 20 p s t 10 x 1 4 m a x 1 0 0 0 2 0 1 4 14 45 ...

Страница 21: ...of the boiler standpipe the relevant regulations must be considered r Vent hole Provide bore as close as possible to the boiler wall s High water HW t Electrode rod d 8 mm u Protection tube DN 80 in France according to AFAQ DN 100 v Protection tube DN 100 w Electrode distance 14 mm creepage distances and clearances x Low water LW y Reducer DIN 2616 2 K 88 9 x 3 2 42 4 x 2 6 W Examples of Installat...

Страница 22: ...box and align the cable 8 Hold cable with cable clamp h and cable gland i in position 9 Mount lid c and insert screw b 10 Put upper part of the terminal box onto the level electrode and fix it firmly with screw b Electrical Connection NRG 111 11 optional for NRG 16 11 NRG 17 11 NRG 19 11 Electrical connection via terminal box made from aluminium Note that screened four core cable e g I Y St Y 2 x ...

Страница 23: ...NRG 1 1X LW HW 1 2 10 11 12 9 8 3 4 5 6 2 3 4 5 6 Fig 24 This wiring diagram is only valid for France Fig 25 Terminal box made from aluminium Fig 26 NRG 16 11 NRG 17 11 NRG 19 11 NRG 111 11 NRG 16 11 NRG 17 11 NRG 19 11 NRG 111 11 NRG 16 11 NRG 17 11 NRG 19 11 ...

Страница 24: ...size 2 5 completely insulated according to DIN VDE 0680 1 n Open end spanner A F 18 19 Voltage table Use this voltage table as a reference when checking whether the level electrode is submerged or if there is a malfunction Please take the wiring diagram of the electrode NRS 1 7 into account Fig 23 Fig 24 U1 2 U1 4 U2 4 submerged exposed malfunction submerged alarm 10 Veff 0 5 µS cm C 0 13 cm 1 2 V...

Страница 25: ...le 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 measuring pot are closed Remedy Open isolating valves Fault The electrode rods have earth contact Remedy Check and change position of installation If faults occur that are not listed above or cannot be corrected please contact ...

Страница 26: ... 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 Note on the Declaration of Conformity Declaration by the Manufacturer Annex For details on the conformity of our equipment according to the European Directives see our Declaration of Conformity or our Declaration of Manufacturer The current...

Страница 27: ...27 For your notes ...

Страница 28: ...3965 14 GESTRA AG Bremen Printed in Germany 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 Web www gestra de ...

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