HCDAR-81S0-20 meter radar level gauge for solid measurement

0-20 meter radar level gauge solid measurement

The HCDAR-8x series is a level measuring instrument that uses special millimeter wave (FMCW) technology. The working frequency is 76-81GHz, and the output signals include two-wire (4-20) mA, four wire (4-20) mA, and RS485. The maximum range is 120m, and the minimum blind spot is 8cm. The minimum antenna beam angle is about 3 °, which can achieve accurate measurement of liquid, solid, and dust materials.

Application: Solid state measurement

Measurement range: 0-20m

Medium temperature: (-40~120) ℃

Process pressure: (-0.1~2) MPa

Accuracy:<2mm

Output signal: (4-20) mA HART

Operating frequency: (76~81) GHz

Beam angle: 3 °

Explosion proof grade: Ex ia II C T6 Ga

Product Principle

The HCDAR-8x series emits a microwave signal with a frequency that varies linearly with time. The reflected signal from the microwave encountering the material is mixed with the emitted signal through a 'mixer'. The difference frequency between the two is proportional to the distance from the radar to the reflection surface, and the required distance information is obtained through FFT transformation.

Characteristics of solid measurement products using 0-20 meter radar level gauges

Based on complementary metal oxide semiconductor (CMOS) devices, highly integrated, with higher signal-to-noise ratio and smaller blind spots.

2. 5GHz working bandwidth enables the product to have higher measurement resolution and accuracy.

3. The narrowest 3-antenna beam angle reduces the impact of interference in the installation environment on the instrument, making installation more convenient.

4. The wavelength is shorter and has better reflection characteristics on solid surfaces, so there is no need to specifically use universal flanges for aiming.

5. Support remote debugging and upgrading, reduce waiting time, and improve work efficiency.

Selection and Application

Installation requirements

Two points to note during installation:

(1) Aim at the target material level and try to ensure the vertical incidence material level as much as possible;

(2) Avoid false echoes. Typical operating conditions refer to the following points.

Application Cases

Suitable for measuring liquids or solids, with a small antenna beam angle, suitable for situations where the tank diameter is large and the height is small.