High Accuracy Radar Level Sensor

1.Product Principle of High Accuracy Radar Level Sensor

The radar level meter uses frequency modulated continuous wave (FMCW) technology. The antenna transmits a high-frequency frequency modulated radar signal, and the frequency of the radar signal increases linearly. The transmitted radar signal is reflected by the measured medium and received by the same antenna. At the same time, the frequency difference between the transmitted signal frequency and the received signal frequency is proportional to the measured distance. The collected frequency difference signal is subjected to fast Fourier transform (FFT) to obtain the spectrum of the reflected echo, and the distance of the target to be measured is calculated based on this.

2. High Accuracy Radar Level Sensor Technical Parameters

Measuring medium: highly corrosive or non-corrosive liquid, steam, foam

Measuring range: 0.1m～10m  

Process connection: flange ≥ DN50

Process temperature: -40～130℃

Process pressure: -0.1～2.5MPa

Antenna size: 42mm lens antenna (determined by flange size)

Antenna material: PTFE

Accuracy: ±2mm (range below 35m) ±5mm (range between 35m-100m)

Protection level: IP67

Center frequency: 80GHz

Emission angle: 6°

Power supply: two-wire/DC24V

Four-wire system/DC12~24V

Four-wire/AC220V

Housing: Aluminum / Stainless steel

Signal output: two-wire/4...20mA/HART protocol

Four-wire 4...20mA/ RS485 Modbus

3. High Accuracy Radar Level Sensor Product Features

The antenna is small in size and easy to install; it is a non-contact radar, without wear and pollution.

Almost unaffected by corrosion and foam; almost unaffected by water vapor, temperature and pressure changes in the atmosphere.

Severe dust environment has little effect on the operation of high-frequency level meters.

The shorter the wavelength, the better the reflection from inclined solid surfaces.

The small beam angle and concentrated energy enhance the echo capability while helping to avoid interference.

The measurement blind area is smaller, and good results can be achieved even for small tank measurements.

High signal-to-noise ratio for better performance even under fluctuating conditions.

High frequency, the best choice for measuring solids and low dielectric constant media.