Seeking help with the use of guided wave radar level gauges?
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Can a guided wave radar level gauge measure the interface level? Is the maximum range during measurement the length of the waveguide rod? If there are both water-oil and oil-gas interfaces within the measurement range, which one will be measured? Thank you all, experts!
In theory, guided wave radar level gauges can measure the interface level, depending on the specific operating conditions. During measurement, the maximum range is the length of the guided wave rod (excluding the dead zone). If there are both water-oil and oil-gas interfaces within the measurement range, both interfaces can be measured and their data can be outputted (at least this is the case with Kolon’s products).
Check the instructions or contact the supplier
The vast majority of these measurements are conducted at the gas-liquid interface. Although it is theoretically possible to measure other types of interfaces, in the case of solid-liquid interfaces or oil-water interfaces, either the layering is not clear enough, or the dielectric constants of the upper and lower layers are similar, or the thickness of either the upper or lower liquid layer is small; as a result, the measurement quality is not good
The measurement interface of the radar level gauge used for guiding has certain requirements: the interface layers need to be clearly separated, and the dielectric constants of the materials on the upper and lower sides should differ significantly. As for those 3 types of materials and 2 interfaces you mentioned, it’s probably not easy to handle that situation
It is generally a two-wire system, with one input signal and one output signal. If it is necessary to measure other interfaces, it is theoretically possible to add output signal terminals, allowing the interpreter to distinguish between the signal values. Guided wave radar has a simple principle and is widely applicable.