Questions about float level gauges
Thread Content
Recently, the float level gauges in the fractionator of our diesel hydrogenation unit have been failing from time to time. I would like to ask what are the possible reasons for such failures of the float level gauges?
What does failure refer to? Is the liquid level indication inaccurate? Changes in process conditions lead to variations in the density of the medium, while dirt buildup inside the sedimentation tank causes jamming.
The verticality of the float installation is insufficient, causing the float to rub against the outer wall, which may lead to malfunction.
If the float fails, observing the trend can help in making a judgment – sudden increases or decreases, as well as a steady pattern. Generally, high-pressure floats are of imported brands, but circuit board failures cannot be completely ruled out; such issues have been encountered before. Also, in the case of diesel hydrogenation processes, sticking usually does not occur, but over time it is necessary to check whether there is any buildup on the walls； It is necessary to check the power supply circuit for any occasional grounding issues or shielding cables, etc. Safety must also be taken into consideration, as the hydrogen sulfide level can be quite high
Our high-score threshold also often malfunctions, and it needs to be calibrated every two months or so.
Also, the float falls off the hook, showing full scale directly
Density change~~~~~~~~~