Problems with liquid carbon dioxide level gauges
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For on-site liquid level measurement of liquid carbon dioxide, differential pressure type level gauges were originally used, but the pressure transfer tubes tend to get clogged, resulting in inaccurate level readings. Are there any better level gauges that can be used as a replacement?
Will it block the pressure guide tube? Is liquid carbon dioxide dirty, with ash and mud in it?
You can try an insert-type differential pressure level gauge
I’m also wondering how liquid carbon dioxide can clog the pressure guide tube ? If it is a liquid, a differential pressure gauge can be used.
Float rod level gauge or capacitive level gauge
A differential pressure type is also used, specifically a double-flange differential pressure level gauge; since there are no pressure transfer pipes, there is no risk of blockage.
Dude, a differential pressure transmitter doesn’t necessarily require a conduit. Why not use a flanged differential pressure transmitter? If cleanliness is a concern here, a convex flange-type differential pressure transmitter can be chosen. Make the hole in the tank DN80. Can it still be blocked?
The poster’s statement that “pressure guide tubes are prone to clogging” might be a mistaken inference or incorrect description of the reason for inaccurate measurement values? Liquid carbon dioxide is dry ice, and like liquid nitrogen, it is used as a refrigerant. It should be produced by compressing clean gases; so how can blockages occur in such a substance? When you think things based on a wrong premise, you are likely to go astray.
If it feels blocked, remove the pressure guide tube and blow it clean; carbon dioxide is so clean – how could it get blocked?