Interface Level Guided Wave Radar

D

Thread Starter

dasa

Hi All

We are going to install oil/water separator in the onshore facility. The drum/vessel size is 4.5m ID x 10m T/T with weir plate height of 3.4m. The alarm limits set by process engineer is 3.25m for high-high & 150mm for low-low.Since guided wave radar being recommended, It will end up in probe length of 4.5 m which will make maintenance difficult.

Please advise with your recommendations/other techniques etc.

Regards
dasau
 
R
Hi,

Guided wave radar should work provided you have a clean interface however if you have an emulsion layer the signal may be absorbed rather than reflect.

We use differential bubble tubes with DP cell for many interface applications, sure it's old fashioned and crude but it does work well.
Displacer type work well also. You may not need a probe that goes all the way to bottom of tank, just to cover the range as per process engineer.

There are lots of other methods as well.

Regards
Roy
 
Hi Dasau,

I have posted a new answer and complete calibration procedure just yesterday in "engineering", you might want to look at. No the probe length will not cause any maintenance problems. Will be best to install it in a standpipe (with sight glasses) attached to the vessel and not inside the vessel itself, since doing that WILL cause maintenance problems later on..

Good luck and feel free to mail me if you need help:
mass44[ at] hotmail.co.uk

Sam
 
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