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Varec NMR81 Radar Tank Gauge

BRAND : Varec

The NMR81 Radar Tank Gauge (RTG), with an accuracy rate of ±0.5 mm, is an intelligent level radar tank gauge designed for high accuracy liquid level measurement in storage and process applications.

The NMR81 Radar Tank Gauge (RTG), with an accuracy rate of ±0.5 mm, is an intelligent level radar tank gauge designed for high accuracy liquid level measurement in storage and process applications.

Specifications

Weight
  • Housing with electronics: approx. 12 kg (26 lbs)
  • Sensor and processor connections: 6 to 36 kg (13 to 80 lb); dependent on the device version

Enclosure
  • Housing: Aluminum
  • Antenna and Process Connection:
    • 316L: Shaft and flange
    • PTFE: Antenna lens
    • FKM/HNBR/FFKM: Seal
  • Rated IP66/68, NEMA Type 4x/6P enclosure

Temperature

Ambient:

  • Device: -40 to +60°C (-40 to +140°F)
  • Display Module: -20 to +70°C (-4 to +158°F)

Process:

-40 to +200°C (-40 to +392°F)

Primary Output
  • MODBUS RS485
  • V1
  • 4-20mA HART Ex d/XP, RTD input
  • 4-20mA HART Ex i/IS, RTD input

Range

Calibration Range:

30 m (98 ft)

Maximum Range:

Depending upon configuration choices – 70 m (230 ft)
For calibration to regulatory standards – 30 m (98 ft)

Approvals

FM, IEC Ex, ATEX and EAC


Options

Approvals & Certifications

FM, IEC Ex, ATEX and EAC approvals

SIL2 and SIL 3 certifications

Power Supply

High voltage type: 85 to 264 VAC, 50/ 60
Hz, 28.8 VA
Low voltage type: In preparation

Communication

Primary Output

  • Modbus RS485
  • V1
  • 4-20mA HART Ex d/XP, RTD input
  • 4-20mA HART Ex i/IS, RTD input

Secondary I/O Analogue

  • 1 x “Ex d/XP 4-20mA HART + RTD input”
  • 2 x “Ex d/XP 4-20mA HART + RTD input”
  • 1 x “Ex i/IS 4-20mA HART+ RTD input”
  • 2 x “Ex i/IS 4-20mA HART+ RTD input”
  • 1 x “Ex i/IS 4-20mA HART + RTD input”
  • 1 x “Ex d/XP 4-20mA HART + RTD input”
  • None

Secondary I/O Exd

  • 1 x “2x relay + 2x discrete I/O”
  • 2 x “2x relay + 2x discrete I/O”
  • 3 x “2x relay + 2x discrete I/O”
  • 1x “MODBUS RS485”
  • 1x “MODBUS RS485”, 1 x “2x relay + 2x discrete I/O”
  • 1x “MODBUS RS485”, 2 x “2x relay + 2x discrete I/O”
  • None

The HART Ex ia/IS active input is available by default. It needs not to be chosen explicitly when ordering a device.

Antenna

Lens antenna – 50mm/2?, 80mm/3?, 100mm/4?

Flange Type
  • NPS ASME B16.5, 150 lb, 2? to 10?
  • NPS ASME B16.5, 300 lb, 2? to 6?
  • PN10/16, DN50 to DN250
  • PN25/PN40, DN50 to DN150
  • UNI flange DN150/6?/150, max PN1/Cl.14.5/1K, suitable for DN150 PN10/16, NPS 6? Cl.150, 10K 150
  • UNI flange DN200/8?/200, max PN1/Cl.14.5/1K, suitable for DN200 PN10/16, NPS 8? Cl.150, 10K 200
  • UNI flange DN250/10?/250, max PN1/Cl.14.5/1K, suitable for DN250 PN10/16, NPS 10? Cl.150, 10K 250

Programming
  • Local display; operation via the local display is possible without opening the device
  • Configuration software (e.g. DeviceCare); connected via:
    – HART
    – Service port (CDI) with optional Commubox FXA291




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