Landfill Gas Condensate Liquid Level
Landfill Gas Condensate Liquid Level
(OP)
I need to measure the depth of the liquid in a landfill gas condensate sump that is under vacuum.
The sump is underground. Deposits are of concern.
I am new to vacuum applications. Thanks in advance.
The sump is underground. Deposits are of concern.
I am new to vacuum applications. Thanks in advance.
RE: Landfill Gas Condensate Liquid Level
I presume a vacuum pump is pulling the vacuum.
If the vacuum can tolerate a small amount of air, then a bubbler with an ultra low flow constant flow regulator can supply a low flow of air (or bottled nitrogen if air is problem) through a dip tube/pipe inserted into the liquid.
A differential pressure transmitter high side connected to the dip tube with its low side connected to a 2nd pipe/tube that connects to the non-liquid vacuum space will report the level in units of water column: inches or feet of water, or mm or m of water.
Level done by differential pressure assumes a constant density. Any change in density from the design density results in a proportional error in the reported.
2. Ultrasonic does not work in a partial vacuum.
3. Non-contact radar or guided wave radar will work in a vacuum.
RE: Landfill Gas Condensate Liquid Level
RE: Landfill Gas Condensate Liquid Level