Problem With EH GWR Level in Depropanizer

H

Thread Starter

hany5757

We have a E+H FMP51 GWR to measure the bottom products of Depropanizer (Butane & Condensate), We face a problem that the level suddenly decreased until it reaches 0%- (with a fast ramp, from 50% level to 0% within 1 second, not abruptly) which means echo is lost at that time.

After reset and some time passes (nearly 2 hours), the reading returns to normal. After some days ,suddenly problem repeated again.

Please any advice, Is GWR correct for this application??
 
we checked the echo trend and found actually no echo from the fluid, so it is actual echo lost. I read this is special application of boiling hydrocarbon with very low dielectric constant..any advice? anyone have dealt with similar application?
 
hi

please check if the lost of the echo matches with a drop in the pressure or a rise of the temp (this mean: maybe the liquid surface begin to boil).
 
R
Is it possible to add a float around the probe, that will give it a positive target rather than a boiling surface?
 
If this happen, What is the solution??

>please check if the lost of the echo matches with a drop in the pressure or
> a rise of the temp (this mean: maybe the liquid surface begin to boil).
 
> Is it possible to add a float around the probe, that will
> give it a positive target rather than a boiling surface?

How we can make this? Do you have more explanation please? if we replace rod type probe with coaxial type, will it be better and can solve the problem?
 
> if we replace rod type probe with coaxial type, will it be
> better and can solve the problem?

If the surface is boiling, you don't have a "target" for the microwaves, as Roy said. A coax probe will perform much better. Or even better: put the existing rod probe in a 3 inch external bypass, so the liquid surface is more calm and cold.
 
Top