Does temperature have an impact on differential pressure in level gauges?
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The hydrocracking kerosene tower is set to increase diesel production in the near future; kerosene will be sold as diesel. As a result, the flash point of this kerosene is 10 degrees higher than normal, and this can only be adjusted by raising the temperature at the bottom of the tower. The temperature was previously 204 degrees and is now 220 degrees, but the level gauge no longer gives accurate readings. Could it be that the temperature affects the differential pressure, thereby impacting the level gauge? This post was last edited by naska on 2008-2-20 at 11:20
It should have some impact, because by raising the flash point, you also need to increase the temperature at the bottom of the tower; as a result, the density of the product changes, and the density error indicated by your original instruments becomes larger, which is why the instruments give inaccurate readings
It has an impact; temperature affects the density of the medium, so recalibration is required
Changes in temperature and medium density require re-calibration
It definitely has an impact. As the temperature rises, the density decreases, which causes the level gauge to indicate a lower height than the actual liquid level in the tower. That is, sometimes when the level indicated by the level gauge is in the 90s percent range, the actual liquid level inside the tower may already be at full capacity. The solution is to determine the density of the medium at 220 degrees, and then recalculate the full-scale value of the level gauge; using the formula P=ρgH, this value will definitely be lower than the original scale value ； The zero value doesn’t need to be changed; just reset it and that’s it. If there are any further questions, you can get in touch via text message.
If it is a float-type level gauge, there will definitely be an impact, as the density changes.
It cannot be indicated correctly; the description should be more explicit