Guided wave radar level meter probes, also known as detection components, which mainly include coaxial tube probes, rod probes and cable probes.
What material are these probes made of? Most of the coaxial tubular probes are made from stainless steel 304 and stainless steel 316L, while rod and cable probes are made from PTFE and PFA in addition to the above two materials.
Both 304 and 316L are stainless steels with the commonality of having a certain level of corrosion resistance. Due to its chemical composition, 316L contains the element Mo.
Therefore, at higher temperatures, 316L is more resistant to corrosion than 304. However, both 316L and 304 can still corrode in certain special environments.
PTFE, scientifically known as polytetrafluoroethylene, is a polymer that is characterized by its resistance to high temperatures, low temperatures, corrosion, adhesion, aging, and electrical insulation.
Typically, PTFE can be used normally at 250°C and can maintain a certain elongation at -196°C.
PFA, a copolymer of a small amount of perfluoropropyl perfluorovinyl ether and polytetrafluoroethylene. It has additional advantages over PTFE.
Firstly, reduced solute viscosity and increased melt bonding.
Secondly, it has greater chemical (chemical, chemical) resistance.
Thirdly, it has better compression strength and creep resistance.
Fourth, good dielectric properties, excellent radiation resistance.
Fifth, crystalline material, moisture absorption is small.
The applicability of the guided wave radar level meter depends to a large extent on the detection components. Therefore, the relevant engineers have conducted a lot of research and experiments on the materials of the detection components in the early stage of research and development, and even the physical and chemical properties of each material are well understood.
However, as technology develops and advances, more materials will come into the researchers’ view and more detection components will replace the existing ones. So when we choose a guided wave radar level meter, we must look and ask a lot of questions in order to choose the best and most suitable guided wave radar level meter.