Endress+Hauser Micropilot NMR81
Radar measurement

Endress+Hauser Micropilot NMR81
Accuracy

up to 0.5 mm

Process temperature

-40В°C...200В°C
(-40В°F...392В°F)

Process pressure absolute / max. overpressure limit

Vacuum.....16 bar abs

Max. measurement distance

70 m (230 ft)
For calibration to regulatory standards:
30 m (98 ft)

Main wetted parts

316L, PTFE

Item Number: Micropilot NMR81
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Drip-off lens antenna with 80 GHz transmitting frequency for custody transfer applications.

Measuring principle

Level radar

Characteristic / Application

Lens antenna, 80GHz: High precision measurement for for storage tanks up to 30 m (98ft)

Specialities

Custody transfer level measurement
Measurement close to tank wall

Supply / Communication

85-264VAC

Accuracy

up to 0.5 mm

Ambient temperature

Standard:
-40В°C...60В°C
(-40В°F...140В°F)
For calibration to regulatory
standards:
-25В°C...55В°C
(-13В°F...131В°F)

Process temperature

-40В°C...200В°C
(-40В°F...392В°F)

Process pressure absolute / max. overpressure limit

Vacuum.....16 bar abs

Main wetted parts

316L, PTFE

Process connection

Flange:
DN50/2"...DN300/12"
Flange w/ Alignment tool:
DN100/4"...DN300/12"
UNI-Flange:
DN150/6"...DN300/12"
UNI-Flange w/ Alignment tool:
DN150/6"...DN300/12"

Max. measurement distance

70 m (230 ft)
For calibration to regulatory standards:
30 m (98 ft)

Communication

Outputs:
Fieldbus: Modbus RS485, V1, HART
Analog 4-20mA output (Exi/ Exd)
Relay output (Exd)
Inputs:
Analog 4-20mA input (Exi/ Exd)
2-, 3-, 4-wire RTD input
Discrete input (Exd, passive/active)

Certificates / Approvals

ATEX, FM, IEC Ex, EAC, JPN Ex

Safety approvals

Overfill protection WHG
SIL

Design approvals

EN 10204-3.1
NACE MR0175, MR0103
AD2000

Metrological approvals and certificates

OIML, NMi, PTB

Options

Redundant fieldbus
Alu-coated or 316L housing
Weather protection cover
Adjustable mounting seals

Application limits

Maximum measuring range is
dependent on the tank form and/
or application
Strong condensate or build-up
formation

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