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Summary of Contents for GESTRA NRGT 26-1S
- Page 1 Level Transmitter NRGT 26-1 NRGT 26-1S Original Installation Instructions 810213-11 E n g l i s h...
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Page 2: Table Of Contents
Key ...............................15 Tools ..............................15 Wiring diagram for level transmitter NRGT 26-1, NRGT 26-1S ...............16 Connecting level transmitter NRGT 26-.. with supply voltage 24 V AC/DC ..........16 Connecting level transmitter NRGT 26-.. with supply voltage 115 / 230 V AC .........16... - Page 3 Adjusting upper end of measuring range ....................18 Troubleshooting Indication, diagnosis and remedy ......................19 Replacing electronic module ........................20 Maintenance Safety note ............................21 Cleaning the electrode rod ........................21 Removing and disposing of the level transmitter Removing and disposing of level transmitter NRGT 26-1, NRGT 26-1S ..........21...
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Page 4: Important Notes
Important notes Usage for the intended purpose The level transmitters NRGT 26-1 and NRGT 26-1S are used for continuous level monitoring in steam boilers and (pressurized) hot-water installations or in condensate and feedwater tanks. In conjunction with the level switch NRS 2-.. and the level controller NRR 2-.. the transmitter can be used as water level controller with MIN/MAX alarm. -
Page 5: Directives And Standards
Approvals for Marine Applications The level transmitter NRGT 26-1S is approved for marine applications. LV (Low Voltage) Directive and EMC (Electromagnetic Compatibility) The level transmitter NRGT 26-1 meets the requirements of the Low Voltage Directive 2014/35/EU and the EMC Directive 2014/30/EU. -
Page 6: Technical Data
Service pressure PN 40, 32 bar at 238°C Mechanical connection NRGT 26-1: Screwed G ¾ A, ISO 228 NRGT 26-1S: Flange DN 50, PN 40, DIN EN 1092-01 Materials Screw-in body: 1.4571, X6CrNiMoTi17-12-2 Electrode rod insulation: PTFE Terminal box: 3.2161 G AlSi8Cu3 NRGT 26-1S: Flange 1.0460 P250GH... -
Page 7: Scope Of Supply
1 Level transmitter NRGT 26-1 1 Joint ring 27 x 32, form D, DIN 7603, 2.4068, bright annealed 1 Installation manual NRGT 26-1S (for marine applications) 1 Level transmitter NRGT 26-1S with flange DN 50, PN 40, DIN EN 1092-01 1 Installation manual... -
Page 8: Name Plate/Marking
Technical data - continued - Name plate/marking Safety note Equipment designation, PN 40 PN 40 pressure rating PN 40 PN 40 End connection, material number 32 bar (464psi) 32 bar (464psi) 238°C (460°F) 238°C (460°F) Pressure/temperature rating Tamb Tamb 70°C 70°C IP 65 IP 65... -
Page 9: Installation
Installation Note The level transmitter NRGT 26-1 can be installed together with one GESTRA level elec- trode for water level limiting or for high-level alarm in a single protection tube or exter- nal level pot (inside diameter 100 m). Fig. 5 - 8. If the level limiting electrode is installed inside the vessel, it must be at least 40 mm away from the upper vent hole. -
Page 10: Dimensions Nrgt 26-1, Nrgt 26-1S
Installation - continued - Dimensions NRGT 26-1, NRGT 26-1S GESTRA Steam Systems GESTRA Steam Systems GESTRA GESTRA b = 68 b = 68 Screwed G ¾ A, ISO 228 ∅48.5 ∅ 15 NRGT 26-1 NRGT 26-1S 1 2 3 4... -
Page 11: Nrgt 26-1
4. Screw level transmitter into threaded standpipe or flange and tighten with an open-end spanner A. F. 41 mm. The torque required when cold is 160 Nm. NRGT 26-1S 1. Check seating surfaces and place joint ring onto the connecting standpipe. -
Page 12: Nrgt 26-1
G ¾ DN 20 DN 100 24.5 24.5 ≤ 90° ∅ 20 DN 20 Fig. 7 Protection tube (provided on site) for installation inside the boiler and in combination with other GESTRA equipment Fig. 8 External level pot DN 20... -
Page 13: Key
Examples of installation - continued - NRGT 26-1 - continued - Tube e.g. 33.7 x 3.2 Fig. 9 Inclined installation, e. g. in steam boilers Flange PN 40, DN 50, DIN EN 1092-01 (for one electrode) Flange PN 40, DN 100, DIN EN 1092-01 (for electrode combination) For the approval of the boiler standpipe with connecting flange the relevant regulations must be considered. -
Page 14: Electrical Connection
Electrical connection NRGT 26-1, NRGT 26-1S GESTRA Steam Systems GESTRA Fig. 10 3 4 5 Fig. 11 Shown without cover plate... -
Page 15: Connection Of Level Transmitter
+/- 180° into the desired direction (cable gland). Connecting the NRGT 26-1, NRGT 26-1S 1. Unscrew housing screws o and remove housing cover p. Fig. 10 2. Remove terminal strips z and A from circuit board. -
Page 16: Wiring Diagram For Level Transmitter Nrgt 26-1, Nrgt 26-1S
Electrical connection - continued - Wiring diagram for level transmitter NRGT 26-1, NRGT 26-1S NRGT 26-1 NRGT 26-1S Thermal Supply fuse Earthing screw Disconnecting switch in housing 4-20 mA Fuse max. load. 500 Ω – 24V AC/DC Fig. 12 optional 115/230 V AC Connecting level transmitter NRGT 26-.. -
Page 17: Basic Settings
Measuring range 1600 mm to 2000 mm: Switch r position 5, water ≥ 20 µS/cm Factory setting NRGT 26-1S The level transmitter features the following factory set default values: Measuring range1275 mm: Switch r position 4, water ≥ 20 µS/cm ... -
Page 18: Commissioning Procedure
Commissioning procedure Danger The terminal strip of the level transmitter is live during operation. This presents the danger of electric shock! Cut off power supply before mounting or removing the housing cover! Use only a completely insulated screwdriver according to VDE 0680 for setting the measuring points. -
Page 19: Troubleshooting
Troubleshooting Indication, diagnosis and remedy Attention Before carrying out the fault diagnosis please check: Supply voltage: Is the level transmitter supplied with the mains voltage specified on the name plate? Wiring: Is the wiring in accordance with the wiring diagram? Malfunctions Equipment does not work accurately Error... -
Page 20: Replacing Electronic Module
3. Undo the functional earth B connection. 4. Unscrew the fixing screws D for the electronic module and take out the module. The module is available as spare part. Stock code # NRGT 26-1 NRGT 26-1S 321317 230 V AC 321340 115 V AC... -
Page 21: Maintenance
Clean the electrode rod with a wet cloth. Removing and disposing of the level transmitter Removing and disposing of level transmitter NRGT 26-1, NRGT 26-1S 1. Switch off supply voltage. 2. Unscrew cover screws o and remove housing cover p. - Page 22 For your Notes...
- Page 23 For your Notes...
- Page 24 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 810213-11/05-2017csa (808437-15) ·GESTRA AG · Bremen · Printed in Germany...
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Questions and answers
How to test the probe of nrgt 26-1s
To test the probe of the GESTRA NRGT 26-1S, follow these steps during commissioning:
1. Check wiring: Ensure all wiring is correctly connected according to the wiring diagram.
2. Apply mains voltage: Power up the system.
3. Adjust measuring range:
- Set the lower measuring range.
- Set the upper measuring range.
This confirms the probe's functionality within its active measuring range. Make sure only qualified staff perform this procedure.
This answer is automatically generated