Project Description

FMCW 80GHz Radar Liquid Level Transmitter (Small Tank Version)



  • 80GHz FMCW technology

  • Liquid application, specialized for Small Tank

  • Measuring range: up to 20 m

  • Accuracy: ±2 mm

  • Narrow emitting angle: 5°

  • PTFE sealed lens, not affected by deposits/condensate water

  • Small antenna size (G 3/4), easy to set and install

  • Light weight and small size

  • Support small batch OEM service

Working principle

Frequency modulation continuous wave (FMCW) technology is adopted in the object level meter of the Radar Liquid Level Transmitter. The continuous wave with frequency variation is transmitted within a certain period, and the echo reflected by the object has a certain frequency difference with the transmitted signal. The distance information between the target and the radar can be obtained by measuring the frequency difference.

Radar Liquid Level Transmitter, as a new industrial level measuring instrument, has the characteristics of high-temperature resistance, high-pressure resistance, vacuum resistance, strong penetration, temperature, steam, dust, and other effects.


The SKR800NS is a Radar Liquid Level Transmitter for continuous level measurement, especially in Small Tank/Vessels.  

Application Cases

Model SKR800N SKR800NS SKR800H
Product Type FMCW Radar Level Transmitter FMCW Radar Level Transmitter FMCW Radar Level Transmitter
Application *Simple liquid Measurement (exp: water)
*Standard liquid measurement (exp: Corrosive chemical)
*Simple solid measurement
*Simple Liquid Measurement
*small-sized antenna, lightweight
*Suitable for small-sized tank/vessel
*Standard Bulk Solid Measurement
*Large range water measurement
*Suitable for Narrow tank, silo, vessel.
Frequency 77GHz-81GHz 77GHz-81GHz 77GHz-81GHz
Measurement Range Liquid: 0.2-30m (0.6 ft – 98 ft)
Solid: 0.2-15m (0.6 ft – 49 ft)
Liquid: 0.2m-20m (0.6 ft – 65 ft) Solid: 0.2-60m (0.6 ft – 198 ft)
Liquid: 0.2-60m (0.6 ft – 198 ft)
Accuracy ±2mm for liquid
±5mm for solid
±2mm ±5mm for solid
±2mm for liquid
Beam Angle 1.5°
Antenna Material SS 304/Sealed PTFE SS 304/Sealed PTFE SS 304/Sealed PTFE
Process Connection Thread G 2 1/2 ;
Flange from DN80
Thread G 3/4 ;
Flange From DN32
Thread M130*2 ;
Flange from DN100
Process Temperature -40°C to +60°C (-40 to +140 °F) -40°C to +60°C (-40 to +140 °F) -40°C to +60°C (-40 to +140 °F)
Process Pressure Normal atmospheric pressure Normal atmospheric pressure Normal atmospheric pressure
Signal output 4-20mA/RS485(Modbus – RTU) 4-20mA/RS485(Modbus – RTU) 4-20mA/RS485(Modbus – RTU)
Power Two-wire DC 24V (22V~30V) Two-wire DC 24V (22V~30V) Two-wire DC 24V (22V~30V)
Explosion-proof Exdia II CT6Gb Exdia II CT6Gb Exdia II CT6Gb

SKR800NS Radar Liquid Level Transmitter Technical Data

Application Liquid Measurement
Frequency 77GHz-81GHz
Measurement Range 8m, 15m, 20m
Antenna Material PTFE
Installation Thread G 3/4 / Flange Start from DN32
Process Temperature -40℃~+60℃
Process Pressure Normal atmospheric pressure
Accuracy ±2mm
Beam Angle
Signal output 4-20mA/HART, Rs 485-Modbus
Power <0.5W (two-wire)
Explosion-proof Exdia II CT6Gb
SK-R800NS Radar Liquid Level Transmitter
Code Medium Type
L Liquid
Code Measuring Range
3~30 3m8m15m20m
Code Connection
G G Thread
N NPT Thread
X Customize
Code Temperature
N -40-60°C
Code Electric Interface
M M20×1.5(F)
N 1/2 NPT(F)
Code Communication
M Modbus
H Hart
SK-R800NS L 10 G N M H