How To Distinguish Between Radar Level Gauge And Radio Frequency Admittance?

The difference between radar level gauge and radio frequency admittance: the radio frequency admittance switch emits a certain high frequency radio wave to act on the probe, so as to analyze and determine the change of the material level in the container. The RF admittance switch changes the frequency of the radio waves depending on the material being probed. The probe of the RF admittance switch and the container wall form a two-stage capacitor with a fixed distance, and the insulating material of the probe and the surrounding air provide an insulating medium. When the air is replaced by other media, the capacitance formed by the probe and the container wall will change, and this change will cause a change in the radio wave acting on the RF admittance switch probe. This change is detected by the internal circuit of the RF admittance switch, and compared with the set value, the amount of change is determined. When it is the same as the set value, the switch value signal is output.
Technical advantages of radio frequency admittance switch: The probe of radio frequency admittance switch can be applied to dust and solid particulate matter, and can provide high sensitivity, stability and durability, and the effect is equally good for liquid and mud. High sensitivity, anti-hanging material. RF admittance switches are widely used, several typical occasions are as follows: chemical plastic film; feed/grain rubber medicine; liquid waste water sand; food mud cement; powder coating/clothing coal; granular solid oil pulp.
The guided wave radar level gauge is a radar level gauge based on the principle of time domain reflection (TDR). The electromagnetic pulse of the radar level gauge propagates along the steel cable or probe at the speed of light. When it encounters the surface of the measured medium, the radar Part of the pulse of the level meter is reflected to form an echo and returns to the pulse emitting device along the same path. The distance between the emitting device and the surface of the measured medium is proportional to the propagation time of the pulse, and the liquid level is calculated.
Technical advantages of guided wave radar level gauge: The radar level gauge measures the continuous level of liquids, particles and slurries, and the measurement is not affected by medium changes, temperature changes, inert gases and steam, dust, foam, etc. The accuracy of the radar level gauge is 1MM, the range is 70 meters, and it can withstand high temperature of 450 degrees and high pressure of 40 kg. The radar level gauge is suitable for acid-base storage tanks, slurry storage tanks, solid particles, and small oil storage tanks in explosion-hazardous areas. All kinds of conductive, non-conductive media, corrosive media. Such as coal bunkers, ash bins, oil tanks, acid tanks, etc.