Issues with the design of radar level gauges
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Radar level gauges come in two types: horn-shaped, contactless radar level gauges, and those equipped with a cable or a transfer rod. What is the difference between the two? There are also two types: guided wave pulsed reflection and continuous frequency modulation transmission. Is this related to the appearance? Does it mean that those with steel cables or transfer rods use continuous frequency modulation, while those with flared ends use pulsed transmission?
The flared type has a higher frequency than the guided wave; the guided wave can be used to detect the liquid phase containing steam
This post was last edited by lant on 2010-6-30 at 16:18. Radar level gauges come in two types: one is a non-contact radar level gauge with a flared design, and the other includes a cable or a transfer rod. What are the differences between these two types? The main difference between the two lies in the mode of propagation of electromagnetic waves: the former propagates in a divergent manner with emitting cones, while the latter propagates along a guide wave medium (steel cable or transmission rod). Also, guided waves are generally used in pulsed radar systems. The flared type can be either continuously frequency-modulated or pulsed. For steel cables, the end usually needs to be fixed, but it can also be equipped with a weight that is not fixed.