How to distinguish between radar level gauge and RF admittance

The difference between the radar level gauge and the RF admittance: The RF admittance switch emits a certain high-frequency radio wave on the probe to analyze and determine the change in the level of the container. The frequency of the radio wave admittance switch varies with the material being probed. The probe and the vessel wall of the RF admittance switch form a two-stage capacitor with a fixed spacing. The insulating material of the probe and the surrounding air provide an insulating medium. When the air is replaced by other media, the capacitance of the probe and the walls of the vessel will change, and this change will cause a change in the radio waves acting on the RF admittance switch probe. This change is detected by the internal line of the RF admittance switch and compared to the set value to determine the amount of change. When it is the same as the set value, the switching amount signal is output.

Technical advantages of the RF admittance switch: The probe of the RF admittance switch can be applied to dust and solid particulate matter, and can provide high sensitivity, stability and durability, and is equally effective for liquid and mud. High sensitivity and anti-hanging. RF admittance switches are widely used, and several typical occasions are as follows: chemical plastic film; feed/cereal rubber drug; 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 time domain reflection principle (TDR). The electromagnetic pulse of the radar level gauge propagates along the wire rope or probe at the speed of light. When encountering 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 therebetween, and the liquid level is calculated.

The technical advantage of the guided wave radar level gauge: the radar level gauge measures the continuous level of liquid, particles and slurry. The measurement is not affected by medium changes, temperature changes, inert gases and steam, dust, foam, etc. The radar level gauge has an accuracy of 1mm, a range of 70 meters, a high temperature of 450 degrees, and a high pressure of 40 kilograms. The radar level gauge is suitable for acid-base storage tanks, slurry storage tanks, solid particles, small oil storage tanks in explosion hazardous areas. All kinds of conductive, non-conductive media, corrosive media. Such as coal bunkers, ash silos, oil tanks, acid tanks, etc.