Working principle:

The radar works with FMCW principle. There is a frequency difference between the continuous waves emitted and the echoes returned, which is proportional to the distance between the antenna reference plane and the top surface of the medium. The signals of the echoes undergo the special processing such as Fourier transform (FT), the unique high-precision algorithms are used during the processing, so that the instrument can accurately measure the level of the medium.

Features: 

1. Non-contact measurement, no wear, no contamination;

2. The antenna size is small, and easy to be installed;

3. Shorter wavelength, better reflection on inclined solid surfaces;

4. The upper dead zone is smaller, and they are more suitable even for the level measurement in small storage tanks;

5. The beam angle is small and the energy is concentrated, which not only enhances the echo capability, but also helps to avoid interference from a possible obstacle;

6. Almost unaffected by corrosive vapors and foam;

7. Almost unaffected by changes of water vapor, temperature, and pressure in the atmosphere;

8. The instrument in severe dust environment can also accurately read the real echoes from the actual level;

9. Having high signal-to-noise ratio, can keep better performance even under fluctuating conditions;

10. 80GHz frequency radar level transmitter is the best choice for measuring solid level and low dielectric constant liquid level. Be suitable for the level measurements of those measured mediums which dielectric constants are respectively ≥1.8

Applications: 

Solid level measurement of different storage tanks or containers in cement, steel, electric power, coal, building materials and other industries (for example: powder, rocks, and gravels).

Specifications:

Measuring range: 35m/85m/120m

Accuracy: ±1mm

Process connection: thread, flange with a universal joint

Process temperature: -40 - +250℃

Process pressure: atmospheric

Operating frequency: 80GHz

Signal output: 4 - 20mA/HART protocol (24V DC), two-wires/four-wires

                       4 - 20mA/HART protocol (220V AC, four-wires)

                       RS485/MODBUS (6-30V DC)

BlueTeeth setting: Optional

Air purging: optional

Explosion-proof grade: Ex ia IIC T6 Ga; Ex d IIC T6 Gb

Enclosure protection grade: IP68 (aluminum housing), IP67 (plastic housing)

Lens size, emission angle and measuring range:

VRPWRD80 Series Intelligent Radar Level Transmitters（EPT）.pdf