High Accuracy Radar Level Sensor

1.High Accuracy Radar Level Sensor Product Principles

High Accuracy Radar Level Sensor utilizes guided waves to provide reliable level measurement with high accuracy, low maintenance and no moving parts.The radar level meter uses frequency modulated continuous wave (FMCW) technology. The antenna emits high-frequency frequency modulated radar signals, and the frequency of the radar signals 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 frequency of the transmitted signal frequency and the received signal frequency is proportional to the measured distance. The collected frequency difference signal is obtained by Fast Fourier transform (FFT) to obtain the frequency spectrum of the reflected echo, and the distance of the target to be measured is calculated.

2.High Accuracy Radar Level Sensor Technical Parameters

Measuring media: strongly corrosive or non-corrosive liquids, steam, foams

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 and 100m)

Protection level: IP67

Center frequency: 80GHz

Ejection angle: 6°

Power supply: two-wire/DC24V

Four-wire system/DC12~24V

Four-wire system/AC220V

Housing: Aluminum/Stainless Steel

Signal output: Two-wire system/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 is easy to install; non-contact radar, no wear and pollution.

Almost not affected by corrosion and foam; almost not affected by changes in water vapor, temperature and pressure in the atmosphere.

Severe dust environments have little impact on the high-frequency level gauge operation.

Shorter wavelengths and better reflect on slanted solid surfaces.

The beam angle is small and the energy is concentrated, which enhances the echo capability while also helps avoid interference.

The measurement blind spot is smaller, and it will also achieve good results for small tank measurements.

High signal-to-noise ratio allows better performance even in fluctuations.

High frequency is the best choice for measuring solid and low dielectric constant.