Working Principle of High Frequency Radar Level Meter

The working principle of high frequency radar level meter:

FM continuous wave radar level meter general principle is the radar to the top of the tank radiation electromagnetic waves, electromagnetic waves encountered in the medium when the reflection by the radar to receive, send and receive signals between the frequency difference δ f and the media surface distance R is a certain proportion: R = c (speed) × δ f (frequency difference) × 2 (FM slope) × K. As the speed of light C and the FM slope K are known, so the estimated frequency difference δ f can be found radar The distance R from the material surface of the installation place, then the total height of the tank is known and the space distance between the radar and the material surface is deducted, i.e., the height of the material level can be obtained.

Technical parameters

Application: temperature resistant, pressure resistant, slightly corrosive liquids

Measuring range: 30 meters

Process connection: thread, flange

Medium temperature: -40 ~ 250 ℃

Process pressure: -0.1～4.0MPa

Accuracy: ±3mm

Protection grade: IP67

Frequency range: 26GHz

Explosion-proof grade: ExiaⅡC T6 Ga/Exd ia IIC T6 Gb

Signal output: 4.... .20mA/HART (two-wire/four-wire) RS485/Mod bus