Problem of large fluctuations in liquid level in glass bottle level gauges
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We installed a tower; the components at the bottom of the tower range from C8A+ to C10A, and the temperature is 200 degrees. The original on-site level measurement used magnetic flap switches, which ensured relatively stable level indication. Later, due to the failure of the magnetic flap, it was replaced with a glass plate level gauge. After the replacement, the liquid level appeared to be at full level; however, a gas bubble would move rapidly from the top of the level gauge downward until it disappeared in the middle of the glass plate. This phenomenon occurred several times per second. Based on past experience and the remote monitoring readings, the current liquid level should be around 70%. I would like to ask the experts what causes this phenomenon and how it should be addressed
Glass plate level gauges operate on the principle of a communicating vessel; if these aren’t accurate, it’s likely that your medium has high viscosity. Use a static pressure level gauge or a double-flange differential pressure level gauge instead. It’s probably not possible to install a top-mounted level gauge in your tower
Why does thickening prevent this phenomenon? Could you explain it? Thank you!
I hope you will not hesitate to share your insights. Thank you!
With heat tracing, the temperature at the bottom of the tower is high, leading to liquefaction, which causes inaccuracies in the glass plate level gauge; however, its trend can still be used as a reference.
My understanding is the same as yours, but is its liquefaction speed that fast? Are there any corrective measures? Should heat tracing be added or should glass tubes with a larger inner diameter be used? Or other methods? Thank you
If there is a large difference from the ambient temperature, heat tracing can be considered; if the location is critical, dual-loop heaters and floats can be considered.