Regarding glass rotameter flow meters
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Recently, the temperature dropped suddenly, and the glass rotameters in the company were affected again. However, a strange phenomenon was observed: the rupture of the glass due to water filling it – there’s nothing that can be done about that. However, the container got cracked from the cold, and I will question the manufacturer’s choice of material. The hemihydrate was preserved. I’m a bit frustrated now; I can only empty all the glass rotameters that aren’t in use on site.
Frost cracking that occurs when the tank is filled with water is mainly caused by the expansion of water’s volume as it turns to ice. As for empty pipes, there’s probably an issue with their quality. The best solution is to ensure proper insulation to prevent sudden drops in the temperature of the fluid inside!
Is your factory an established enterprise? Many companies these days no longer use glass rotor flowmeters; they switch to metal rotor flowmeters. The cost difference isn’t significant, and the problems you mentioned don’t occur with those
Glass rotameters can only be used with gaseous media, while metal rotameters are suitable for use in environments containing water vapor. If there is water inside a glass rotameter, it is necessary to find a way to remove it
Our factory is working on a new project; glass rotameters are quite intuitive to use and inexpensive. We use them quite often for water or ordinary gases, but this is the first time we’ve encountered a cracked air tube.
Glass tube rotameters are still widely used in water treatment systems, but they are generally installed indoors where the temperature can be maintained at a stable level.
Actually, during production, freezing cracks generally do not occur due to low ambient temperatures. The problem that arose this time was mainly because the cleaning was not done properly during the phase 2 water testing
It seems that a medium without water shouldn’t pose much of a problem
Abroad, borosilicate glass is generally used, and the glass tube processing technology is good, so this situation rarely occurs. Many domestic factories use ordinary glass; haha, it’s cheap