Radar level meter

Product Overview

Radar level meter (LM) adopts four-wire X band FMCW mode. It expands radar level meter from single point to comprehensive applications, focusing on solid level detection but not limited by it. The product shows outstanding measurement capability under 

general solid level detection condition. It stands out under environment with heavy dust or other interference factors for it can provide a unique measurement & analysis solution for clients. The measurement of which is not affected by dust, noise of feedings, and airflow or temperature changes, and material level detection is more comprehensive and accurate by the breakthrough of large beam angle detection technology. Compared with radar level meter adopting pulse measurement principle, there will be no "wave  loss" or "wave locking" phenomenon appears even under the working conditions like extreme dust, fast changing in material level and so on, the measurement will be extremely stable and reliable.

Operating Principle

FM continuous wave (FMCW) principle is adopted for LM, and the objective distance is determined from frequency difference between transmitted signal and the received signal. The aerial transmits microwave with continuous linear changes, which, after being reflected by the objective, is received by the aerial again. Due to the linear changes of frequency, there is a frequency difference between the received signal and transmitted signal, which proportional to the distance, and by which the distance is calculated.

Product Features 

1.Commercialized X-band radar level meter focusing on solid material level detection

X-band is a radar frequency band with best overall performance with consideration of penetrability,anti-interference ability,                measurement precision and echoing characteristics,etc. It is widely used in most advanced military radar technology all

over the world .X band can effectively penetrate heavy dust or overcome ashy antenna, it can also get effective echo

from materials with low reflectivity, thus to ensure stable measuring data.

2.Large beam angle application in solid material level detection area

The breakthrough of large beam angle detecting technology expands high precision liquid level detection to high       

performance solid level detection area. With the same vertical distance, it enlarges the detection area of soild material   

surface.With irregular material surface, it improves the measurement representativeness because of large detecting area.

Thus, LM detects material level while eliminating the false echo interference made by obstacles in the silo

3.Excellent comprehensive performance 

The range of the LM is 150m which enables the instrument possesses stronger adaptability for difference operating         

condition, guarantees detection reliability of whole material level variation range; High precision and high resolution 

allow LM notices any slight change in the silo and provides most reliable data for the subsequent comprehensive analysis

4.Radar level meter with comprehensive detecting functions

On the basis of large beam angle, multiple level detection modes can be provided:

1.Standard level detection mode 

2.Highest level detection mode 

3.Lowest level detection mode

4.Average level detection mode

5.Intelligent level detection mode

Under this mode, LM has self-calibration ability which means LM can output the level information which is most helpful

for current production.

To be specific, when the level is high, LM shifts to highest level detection mode in case of overflow accident; when the level is low,LM shifts to lowest level detection mode toinform user feed in time; during normal operation, LM shifts to average level detection mode to indicate the material level information in the silo.

Unique anti-interference function during feeding

When the installing location of LM can't avoid feeding interference entirely, this function can effectively reduce the interference 

and ensure the accuracy of detecting data, improve the adaptability of LM for different operating conditions.

(The specific performance shall be determined by site condition).

Easy for operation

Local and remote setup and check can be ahieved by infrared remote, long-distance remote, uopper computer software,etc.

Intelligent menu structure and options are convenient for commissioning.  

Technical Parameters

Power supply: AC: 220v (+15%) 50Hz 10w, four-wire;

                        DC:24v(+25%) 8w, four-wire

Measuring range: EC-75mm; ST-100m; AI-120m;All-150m

Repeatability:0.5mm

Resolution:0.3mm

Output signal:4-20mA, one way on-off input & output

Beam angle: 18 with 3dB as the demarcation point

Max. adaptable change rate of materials level:12m/min

Process temperature:-40-65C for general type; -40-200C for high temperature type 

Level of protection:IP65

Product Applications

1)Cement industry

Application locations: raw meal silo, raw coal bunker, raw mix station, cement silo, surge bin after homogenization,etc.

2)Mineral processing industry

Application locations: crushing surge bin, grinding & dressing bin, feeding bin,etc.

3)Coal industry

Application locations: raw coal bunker, washing coal bunker, fine coal bunker,etc.