Plugging and wrong DP output

[EEENGRX]

I have a DP that is used to read Level in a scrubber. The scrubber has a demister somewhere around the top and from time to time It gets to plug between the valve and the transmitter which throws off the level readings and would then need to rely on a site glass to monitoring.What would be other options of getting around this issue or a way to permanently resolve these issues.All suggestions are very well appreciated

 

[georgeverghese]

Ask for remote seals on BOTH HP and LP sides of the dp cell - diaphragm seals - this should prevent any gunk / condensate from getting into the impulse lines.

 

[LittleInch]

A tap point below the demister?

Even a very good demister will give you some sort of differential pressure which makes your level readings inaccurate.

your connection point just needs to be above the max liquid level.

 

[danw2]

add a drop leg at the inlet to the low side with a new connection point to accumulate any condensation, so the condensate does not apply its own hydrostatic pressure to the low side.