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NRF81

Tank Level Gauging · Tank Level & Measurement

Class-certified type (DNV register) · technical data sheet not yet verified
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Specifications

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Sil2-zertifiziertSIL2 nach IEC 61508, SIL3 bei homogener oder diversitärer Redundanz
AusgangssignaleV1, Modbus RS485 und HART-Protokoll
Messumformerspeisespannung23,0 V - 380 Ω ⋅ ILast
Maximale Last500 Ω inklusive Signalleitung
Typ des I/O-Moduls1x "Modbus RS485" 1 x "2x Relais + 2x diskrete I/O"
Baudrate1 200 bit/s
Max. Übertragungsdistanz1 200 m (3 900 ft)
Interne Last400 Ω
Measuring range0 … 26 mA
Messgenauigkeit±15 µA
Ausgangsstrom3 … 24 mA
≤15 Nm11.06 lbf "},{
Ø13.5 (0.53)
1505.9 (5.9)
Umgebungstemperatur–40 … +60 °C (–40 … +140 °F)
Anzeigemodul Temperatur–20 … +70 °C (–4 … +158 °F)
Feuchte≤ 95 %
SchutzartIP68/66 nach DIN EN 60529, Typ 6P/4x nach NEMA 250
Stoßfestigkeit30 g (18 ms) nach DIN EN 60068-2-27 (1993)
Schwingungsfestigkeit20 … 2 000 Hz, 1 (m/s2)2/Hz nach DIN EN 60068-2-64 (1994)
Schutz vor nicht ionisierender StrahlungGemäß Richtlinie 2004/40/EG-ICNIRP Richtlinien EN50371
Test, ZertifikatBestellmerkmal 580
Materialnachweis3.1 Materialnachweis, mediumsberührte metallische Teile, EN10204-3.1 Abnahmeprüf
Primär AusgangWM550 C1
Primär Ausgang (040)4-20mA HART Ex d E1
Maximale Stromaufnahme der angeschlossenen HART-Geräte:24 mA
Ausgangsspannung des Ex-d-Moduls:17,0 V@4 mA bis 10,5 V@22 mA
Ausgangsspannung des Ex-ia-Moduls:18,5 V@4 mA bis 12,5 V@22 mA
Eingabe0 … 3 000 kg/m³
Versorgungsspannung AC-Hochspannungsversorgung Betriebswert100 … 240 VAC (- 15 % + 10 %) = 85 … 264 VAC
Versorgungsspannung AC-Niederspannungsversorgung Betriebswert65 VAC (- 20 % + 15 %) = 52 … 75 VAC
Sekundär I/O Analog050
Sekundär I/O Digital Ex d/XP060
Maximale Stromaufnahme der angeschlossenen HART-Geräte24 mA
Ausgangsspannung des Ex-d-Moduls17,0 V@4 mA bis 10,5 V@22 mA
Ausgangsspannung des Ex-ia-Moduls18,5 V@4 mA bis 12,5 V@22 mA
Werkseinstellung Gas Dichte1,2 kg/m³
Werkseinstellung Luft Dichte1,2 kg/m³
Fühler Position-5 000 … 30 000 mm
BetriebsartHART Slave+4..20mA Ausgang
Signalart• Analog (4...20 mA)
Zahl500 001 –0,1 mm
Leitungsimpedanz0 … 15
Werkseinstellung15
P1 (unten) manueller Druck–25 … 25 bar
P1 Position-10 000 … 100 000 mm
P1 Offset-25 … 25 bar
P2 (Mitte) manueller Druck-25 … 25 bar
P2 Offset-25 … 2,5 bar
P1-2 Distanz0 … 100 000 mm
P3 (oben) manueller Druck-2,5 … 2,5 bar
P3 Position0 ... 100 000 mm
P3 Offset-2,5 ... 2,5 bar
Umgebungsdruck0 … 2,5 bar
Kalibrierung Temperatur25 °C
Linearer Ausdehnungs Koeffizient15 ppm
Sicherheitsdistanz2 000 mm
Hysterese50 mm
Wasserdichte1 000 kg/m³
23.593.5 V
93.526.3 °C
G1 N AC85...264 V
Werkseinstellung Tank Referenzhöhe20 000 mm
Werkseinstellung Maximale Fühler Temperatur250 °C
Werkseinstellung Fühler Position5 000 mm
Stromaufnahme24 mA
Ausgangsspannung17,0 V@4 mA bis 10,5 V@22 mA
Füllstand–0,1 mm
Tank Referenzhöhe20 000 mm
Druck-25 ... 25 bar
Dichte manuell0 … 3 000 kg/m³
Minimaler Füllstand0 … 20 000 mm
Werkseinstellung Minimaler Füllstand7 000 mm
Minimaler Druck0 … 100 bar
Werkseinstellung Minimaler Druck0,1 bar
Werkseinstellung Sicherheitsdistanz2 000 mm
Werkseinstellung Hysterese50 mm
Output voltage of the Ex-ia module18.5 V@4 mA to 12.5 V@22 mA
Transmitter power supply voltage23.0 V - 380 Ω ⋅ Iload
Maximum load500 Ω including signal line
Minimum terminal voltage10.4 V
Wire cross section0.2 to 2.5 mm2 (24 to 13 AWG)
Ground terminal in the terminal compartmentmax. 2.5 mm2 (13 AWG)
Ground terminal at the housingmax. 4 mm2 (11 AWG)
Overvoltage protection10 kA, 8/20 μs, 10 pulses
Ambient temperature range–40 to +60 °C (–40 to +140 °F)
Display module temperature range–20 to +70 °C (–4 to +158 °F)
Storage temperature–50 to +80 °C (–58 to +176 °F)
Humidity≤ 95 %
Degree of protectionIP68/66
Shock resistance30 g (18 ms)
Vibration resistance20 to 2 000 Hz, 1 (m/s2)2/Hz
Materials for Aluminum versionAC 43000 T6
Materials for stainless steel version316L (1.4404)
Pollution degreePollution degree 2
Weightapprox. 12 kg (26 lb)
Maximum current of all connected devices24 mA
Maximum terminal voltage29 V
Low voltage DC power supply: Operational value24 to 55 VDC (- 20 % + 15 %) = 19 to 64 VDC
Power consumption: High voltage AC power supply28.8 VA
Power consumption: Low voltage AC power supply21.6 VA
Power consumption: Low voltage DC power supply13.4 W
Manufacturer documentation

Images from manufacturer documentation.

Photos, drawings and page previews from this model’s datasheet or catalog.

The Tankside Monitor NRF81 is a robust gateway for capturing and integrating tank level data in inventory and process applications.

Applications

  • hybrid tank measurement systems

Features

  • robust housing

Options

  • Modbus RS485
Source: Endress+Hauser NRF81 datasheet, p. 9

Standards

  • IEC 61508
Endress+Hauser NRF81 – Photo (12caf39e4808_S1-28 S. 1)
Photo · 12caf39e4808_S1-28 · S. 1
Endress+Hauser NRF81 – Drawing (576c7fd1e8c0_S2-34 S. 3)
Drawing · 576c7fd1e8c0_S2-34 · S. 3
Endress+Hauser NRF81 – Drawing (576c7fd1e8c0_S2-34 S. 4)
Drawing · 576c7fd1e8c0_S2-34 · S. 4
Endress+Hauser NRF81 – Drawing (576c7fd1e8c0_S2-34 S. 8)
Drawing · 576c7fd1e8c0_S2-34 · S. 8
Endress+Hauser NRF81 – Page preview (576c7fd1e8c0_S2-34 S. 5)
Page preview · 576c7fd1e8c0_S2-34 · S. 5
Endress+Hauser NRF81 – Page preview (576c7fd1e8c0_S2-34 S. 6)
Page preview · 576c7fd1e8c0_S2-34 · S. 6
Endress+Hauser NRF81 – Page preview (576c7fd1e8c0_S2-34 S. 7)
Page preview · 576c7fd1e8c0_S2-34 · S. 7
Source: Endress+Hauser NRF81 datasheet, p. 1
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