Waveguided Radar Level Question
Waveguided Radar Level Question
(OP)
Hello all,
I'm in the process of evaluating level sensor technologies for a storage tank solution. I was wondering if anyone has had any experience or knowledge of waveguide radar. In particular I'm curious as to whether the radar signal can be successfully passed through any particular solid (i.e. glass, plexiglass, composites, etc.) materials or if it has to have unimpeded sight to the liquid interface.
I did a bit of searching on Google and these forums, but didn't really see too much that matched. If there is a better forum for this topic please let me know.
TIA
Mike
I'm in the process of evaluating level sensor technologies for a storage tank solution. I was wondering if anyone has had any experience or knowledge of waveguide radar. In particular I'm curious as to whether the radar signal can be successfully passed through any particular solid (i.e. glass, plexiglass, composites, etc.) materials or if it has to have unimpeded sight to the liquid interface.
I did a bit of searching on Google and these forums, but didn't really see too much that matched. If there is a better forum for this topic please let me know.
TIA
Mike





RE: Waveguided Radar Level Question
I would think that the solid surface would also reflect the wave back. The dielectric range, as given by Magnetrol is 1.4 - 100. I know that the radar wave can penetrate dust, some foam and such, but I have never seen it go through a solid of any sort.
Typically, you would shoot it directly down at the surface interface in a fixed roof tank, or use a stilling well through a floating roof tank.
"Do not worry about your problems with mathematics, I assure you mine are far greater."
Albert Einstein
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RE: Waveguided Radar Level Question
"Do not worry about your problems with mathematics, I assure you mine are far greater."
Albert Einstein
Have you read FAQ731-376 to make the best use of Eng-Tips Forums?
RE: Waveguided Radar Level Question
Right. That was my understanding as well, but the instrument will be in styrene service, and I am trying to avoid stalagtite formation on the guide. The styrene is inhibited and blanketed, but the length of stay time has resulted in tank surface coating in the past.
Thanks for the reply,
Mike
RE: Waveguided Radar Level Question
RE: Waveguided Radar Level Question
Fouling is a problem. For fouling, there are some ways to deal with it:
a) find a material that won't foul - not so easy
b) a continuous stream of purge gas/solvent to clean the probe - expensive
c) pull - clean - reinstall - time consuming
Would heat work? I was thinking of a constant stream of heated inert gas once in a while?
"Do not worry about your problems with mathematics, I assure you mine are far greater."
Albert Einstein
Have you read FAQ731-376 to make the best use of Eng-Tips Forums?
RE: Waveguided Radar Level Question
Becuase of the cleaning frequency, a lot of our plants stick to using DP cells.
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RE: Waveguided Radar Level Question
RE: Waveguided Radar Level Question
Thanks for the replies, I've got a better idea now on what I'm looking at having to do. As far as nuclear goes, we are kinda hesitant at adding new sources to the site.
Thanks,
Mike