I need to accurately measure the level of a 5 gallon glass tank
I need to accurately measure the level of a 5 gallon glass tank
(OP)
I have a water bottle size glass tank (5gal) I need an accurately to measure the level while running a 20hrs process. Any suggestions?





RE: I need to accurately measure the level of a 5 gallon glass tank
RE: I need to accurately measure the level of a 5 gallon glass tank
RE: I need to accurately measure the level of a 5 gallon glass tank
RE: I need to accurately measure the level of a 5 gallon glass tank
RE: I need to accurately measure the level of a 5 gallon glass tank
A dp is differential pressure switch, which could also be used measure the bottle and contents mass or use the method as suggested by ash9144
RE: I need to accurately measure the level of a 5 gallon glass tank
I tried marking the outside of the glass bottle, but it is not accurate enough. We did think about placing it on a scale, but there are many tube coming in and out of the bottle, even with hanging it in a way that will not touch the bottle, it would not be accurate to at least 200ml. Do I put the dp switch inside the bottle? is there a way to measure using hydrolic pressure? and specific gravity.
RE: I need to accurately measure the level of a 5 gallon glass tank
RE: I need to accurately measure the level of a 5 gallon glass tank
RE: I need to accurately measure the level of a 5 gallon glass tank
The dp cell measures the differential pressure at bottom of liquid compared to the pressure of vapor over the liquid surface. This is used with density of the liquid to derive the liquid height. If density of liquid changes during the reactions, then there will need to be some factor to alter the calculation of liquid height. The density change could be measured, and incorporated into the calculation for the liquid height - you must decide whether it is required. The reaction mass (reactor + contents weight) might be more important than the absolute liquid height measurement.
Thinking about vapor pressure over the liquid, if it is open to atmosphere, then the dp cell only needs to be referenced to the atmosphere. But if your glass 5 gallon bottle is pressurized, then there are other concerns.
A pressurized reactor must have some pressure safety relief system. A glass bottle would not be a good container for any more than a few psi as pressure vessel. Do you have any scenario where a run-away reaction might result in extra pressure or extreme heat release that would greatly increase the pressure inside your glass bottle?
RE: I need to accurately measure the level of a 5 gallon glass tank