The frequency modulated continuous wave (FMCW) radar level meter antenna transmits a frequency modulated continuous wave signal (76~81GHz), which propagates in space at the speed of light. When it encounters the surface of the measured medium, part of its energy is reflected back, received by the same antenna, and received by the antenna. The echo signal and the transmitted signal are mixed, and the frequency of the output intermediate frequency signal is proportional to the distance after mixing, so as to calculate the distance from the antenna to the surface of the measured medium.
What is the working frequency of the radar level gauge?
At present, the non-contact radar level gauges used in industry mainly have three bands; namely, C-band, K-band, and W-band; the emission frequencies of different bands are different, and the corresponding product performance is also very different.
The millimeter-wave radar level meter produced by our company refers to the radar level meter working in the W-band and 76-81GHz.
What is the millimeter wave electromagnetic wave ?
What is millimeter wave electromagnetic wave: The electromagnetic wave in the frequency domain of 30-300GHz (wavelength is 1~10 mm) is usually called millimeter wave, which is located in the overlapping wavelength range of microwave and far-infrared wave, so it has the characteristics of both spectrums. As a 78GHz band radar level meter sensor used in the field of industrial measurement, high-precision, non-contact level and liquid level measurement, has the incomparable advantages of other ordinary microwave pulse radar, guided wave radar, extremely narrow beam and penetration ability, more Adapt to ultra-complex conditions without compromising measurement performance.
80G FMCW RADAR LEVEL SENSOR WORKING PRINCIPLE
The frequency modulated continuous wave (FMCW) radar level meter antenna transmits a frequency modulated continuous wave signal (76~81GHz), which propagates in space at the speed of light. When it encounters the surface of the measured medium, part of its energy is reflected back, received by the same antenna, and received by the antenna. The echo signal and the transmitted signal are mixed, and the frequency of the output intermediate frequency signal is proportional to the distance after mixing, so as to calculate the distance from the antenna to the surface of the measured medium.
How to measure silo level by radar level meter?
Level Senors for Tank Level Measurement. Silo Level Sensor is specially used for level measurement of solid material silos (including fine ore silos). Perfect Solutions for Silo Level Monitoring and Control.
SRL630 FMCW Radar Silo Level Sensor adopts 120GHz FM continuous wave technology, 10GHz sweep bandwidth, and has electromagnetic characteristics in the terahertz band. It has the ability to penetrate materials with a small dielectric constant. In a strong adhesion and strong dust environment, the measurement is stable without interference and does not require any purge device. The measuring distance can reach 150 meters. Perfect solutions in continuous level measurement and remote inventory management systems.Like the storage of powders & bulk solids in bins, silos, vessels, etc.
What are the FMCW radar level transmitter advantages ?
1. High signal strength
The radar antenna transmits ultra-high frequency radar signals (76~81GHz), with a higher signal-to-noise ratio and is hardly affected by material level fluctuations;
It can effectively measure materials with low reflectivity, oil and powder with low dielectric constant can also be perfectly measured;
2. Metrology-grade accuracy, small blind area
The measurement accuracy can reach ±1mm;
The blind area is less than 5cm;
The characteristics of high-precision small blind area determine that the radar is suitable for the measurement of small storage tanks, such as applications in medicine, petrochemical, food, chemical and other industries
3. Small beam angle
Beam angle up to 3°
The extremely narrow beam angle makes the radar energy more focused; it can be used in narrow and long installation spaces without interference from false echoes; even if there are obstacles in the tank, such as stirring, heating coils, etc., the extremely narrow beam angle can also be successful Avoid, achieve accurate measurement; even if the range is up to 100m, the signal will not be attenuated too much.
4. Strong anti-interference
Higher signal-to-noise ratio makes radar measurements almost unaffected by level fluctuations;
The antenna is made of PTFE material, which can effectively prevent corrosion and hang materials;
The penetration is stronger. When there is dust, vapor condensation, attachments, etc. in the measuring tank/silo, the radar wave can penetrate and directly reach the surface of the material level.
SenTec is a globally recognized supplier and manufacturer of radar level measurement instrumentation.
SenTec offers Alternative to VEGAPULS 64-80GHz FMCW Level Radars for level measurement.
A wide variety of Alternative to VEGAPULS 64-80GHz FMCW Level Radars options are available to you.
More the radar level transmitter model price, please contact our sales engineer.
FMCW radar level transmitter application
*The electromagnetic wave emission angle of the product is less than 3°, which is suitable for measurement in narrow spaces or guided wave pipes
*The product can reach 120M measurement range, suitable for the measurement of super large storage tanks
*The blind area of product measurement is in the range of 7-8CM, which is suitable for the measurement of small storage tanks
*The product has extremely high measurement accuracy and is suitable for high-precision metrology-grade measurement
The product has rich echo processing algorithms and experience data of various working conditions and environments; for extremely harsh working conditions such as strong dust and steam, or for storage tanks with special processes such as stirring and heating rods, it has unique characteristics that other similar products do not have this advantage.
