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
