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NMR81

Tank Level Gauging · Tank Level & Measurement

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

Technical data.reference — unverified

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Weight35
Kegeldurchmesser W50 mm (2 in)
Messdistanz D5 m (16 ft)
Minimale Distanz A0,31 m (1 ft)
H16,5 mm (0,65 in)
Ød60 mm (2,36 in)
Ød105 mm (4,13 in)
SM14
P–0,1 … +0,1 bar (–1,45 … +1,45 psi)
T–40 … +80 °C (–40 … +176 °F)
CJIS 50A 10K
L100 mm (3,9 in)
Ød60 mm (2,36 in)
Ød105 mm (4,13 in)
Hmax24 mm (0,95 in)
Hmin14 mm (0,55 in)
Versorgungsspannung AC-Hochspannungsversorgung Betriebswert100 … 240 VAC (- 15 % + 10 %) = 85 … 264 VAC
Versorgungsspannung AC-Niederspannungsversorgung Betriebswert65 VAC (- 20 % + 15 %) = 52 … 75 VAC
Versorgungsspannung DC-Niederspannungsversorgung Betriebswert24 … 55 VDC (- 20 % + 15 %) = 19 … 64 VDC
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
Fühler Position-5 000 … 30 000 mm
Umgebungsdruck0 ... 2,5 bar
Dichtewert0 … 3 000 kg/m³
Minimaler Füllstand0 … 20 000 mm
Minimaler Druck0 … 100 bar
Primär Ausgang040 = V1
Aderquerschnitt0,2 … 2,5 mm2 (24 … 13 AWG)
Aderquerschnitt max.2,5 mm2 (13 AWG)
DN50 PN10-4071285499
ASME 2" 150lbs71285499
JIS 50A 10K71285499
DN80 PM10-4071285501
ASME 3" 150lbs71285501
JIS 80A 10K71285501
Eingabe0 … 65 535
Betriebsart4..20mA Ausgang
Signalart• Analog (4...20 mA)
Maximale Stromaufnahme24 mA
Ausgangsspannung17,0 V@4 mA bis 10,5 V@22 mA
Baud rate: Selectable1 200 bit/s
Transmitter power supply voltage23.0 V - 380 Ω ⋅ Iload
Maximum load500 Ω including signal line
Maximum current of all connected devices24 mA
Core cross section:0.2 to 2.5 mm2 (24 to 13 AWG)
Transmission distanceMaximum 1 200 m (3 900 ft)
Input operating modes• 4..20mA input (1 external device)
Internal load (to ground)400 Ω
Measuring range0 to 26 mA
Output operating modes• 4..20mA output
Output current3 to 24 mA
Data for passive usage (input or output)• Minimum terminal voltage 10.4 V 2)
• Maximum terminal voltage29 V 2)
Wire cross section0.2 to 2.5 mm2 (24 to 13 AWG)
Wire cross section (Ground terminal in the terminal compartment)max. 2.5 mm2 (13 AWG)
Wire cross section (Ground terminal at the housing)max. 4 mm2 (11 AWG)
Sampling rate> 3.3 s–1
Measured value resolution≤ 0.1 mm (0.004 in)
Hysteresis0.2 mm (0.008 in)
Repeatability0.2 mm (0.008 in)
Ambient temperature range Device–40 to +60 °C (–40 to +140 °F)
Ambient temperature range Display module–20 to +70 °C (–4 to +158 °F)
Process temperature range–40 to +200 °C (–40 to +392 °F)
Process pressure range–1 to +16 bar (–14.5 to +232 psi)
Dielectric constantεr ≥ 1.4 1)
Weight Sensor and process connection6 to 36 kg (13 to 80 lb)
Radio standardEN302372-1/2
Operating frequencyapprox. 80 GHz
Minimum pick-up voltage25 VAC
Current consumption at maximum voltage≤ 1 mA (DC)
Ground terminal in the terminal compartmentmax. 2.5 mm2 (13 AWG)
Ground terminal at the housingmax. 4 mm2 (11 AWG)
Standard version±1 mm
Maximum performance±0.5 mm
Output30 VDC @ 2 A
Maximum pick-up voltage250 VAC
Maximum Permissible Error (MPE)±0.5 mm (±0.02 in)
Maximum Permissible Error (MPE) for Custody transfer models±1 mm (±0.04 in)
Output Relay switching power for resistive load30 VDC @ 2 A
Wire cross section (ground terminal)max. 4 mm2 (11 AWG)
Shaft and flange316L (1.4404)
Spring washer316L (1.4404)
Level tool303 (1.4305)
Locking unit316L (1.4404)
Adjusting bolts316 (1.4401)
Genauigkeit Füllstandmessungbis zu +/- 0,5 mm (0,02 in)
Messumformerspeisespannung23,0 V - 380 Ω ⋅ ILast
Maximale Last500 Ω inklusive Signalleitung
Maximaler Strom aller angeschlossenen Geräte24 mA
Messrate> 3,3 s–1
Messwertauflösung≤ 0,1 mm (0,004 in)
Hysterese0,2 mm (0,008 in)
Wiederholbarkeit0,2 mm (0,008 in)
Für Anschlüsse mit folgender Funktion: Erdungsklemme im AnschlussklemmenraumAderquerschnitt max. 4 mm2 (11 AWG)
Für Anschlüsse mit folgender Funktion: Erdungsklemme am GehäuseAderquerschnitt max. 4 mm2 (11 AWG)
Umgebungstemperatur Gerät–40 … +60 °C
Anzeigemodul–20 … +70 °C
Wiederholpräzision0,2 mm (0,008 in)
Umgebungstemperaturbereich Gerät–40 … +60 °C (–40 … +140 °F)
Umgebungstemperaturbereich Anzeigemodul–20 … +70 °C (–4 … +158 °F)
Abmessungen Gehäuse215 (8.46) mm (in)
Antenne A50 mm/2" mm (in)
Antenne B80 mm/3" mm (in)
Antenne C100 mm/4" mm (in)
Maße Gehäuse215 (8.46) mm (in)
Gewicht Sensor und Prozessanschluss6 … 36 kg (13 … 80 lb)
Supply voltageAC 85...264 V
Primary Output4-20mA HART Ex i
Manufacturer documentation

Images from manufacturer documentation.

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

The Micropilot NMR81 is a radar level gauge used for measuring liquid levels in tanks.

Applications

  • industrial tanks
  • storage tanks

Features

  • minimizing signal interference

Options

  • dip freeze function
Source: Endress+Hauser NMR81 datasheet, p. 119
Endress+Hauser NMR81 – Photo (8b1527c73095_S1-18 S. 1)
Photo · 8b1527c73095_S1-18 · S. 1
Endress+Hauser NMR81 – Drawing (b37fed3aebee_S2-52 S. 4)
Drawing · b37fed3aebee_S2-52 · S. 4
Endress+Hauser NMR81 – Drawing (b37fed3aebee_S2-52 S. 5)
Drawing · b37fed3aebee_S2-52 · S. 5
Endress+Hauser NMR81 – Drawing (b37fed3aebee_S2-52 S. 6)
Drawing · b37fed3aebee_S2-52 · S. 6
Endress+Hauser NMR81 – Page preview (b37fed3aebee_S2-52 S. 2)
Page preview · b37fed3aebee_S2-52 · S. 2
Endress+Hauser NMR81 – Page preview (b37fed3aebee_S2-52 S. 3)
Page preview · b37fed3aebee_S2-52 · S. 3
Endress+Hauser NMR81 – Page preview (b37fed3aebee_S2-52 S. 7)
Page preview · b37fed3aebee_S2-52 · S. 7
Endress+Hauser NMR81 – Page preview (b37fed3aebee_S2-52 S. 8)
Page preview · b37fed3aebee_S2-52 · S. 8
Source: Endress+Hauser NMR81 datasheet, p. 14
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