Why are upper and lower sections provided for the on-site level gauge?

Well, what was said upstairs is correct. It’s too long, making transportation inconvenient; moreover, its length makes installation and movement difficult, and it’s prone to damage

Besides the issue of being too long, is there any mechanism to prevent accidental operation of the valve connected to the level gauge? For example, with the on-site level gauge mentioned above, the valve at the bottom is closed (the reason is unknown), which gives the impression that the liquid level is above the container; whereas the level gauge below shows that the liquid level has reached the middle to lower part of the container.

This post was last edited by ylb913 on 2018-9-20 at 23:33. We have level gauges with magnetic flip switches on site that are 5 or 6 meters long; they are lightweight and less likely to get damaged due to vibrations. For glass plates, those that are 30 cm per piece are too heavy and too long to be moved manually; glass tubes that are too long are prone to breaking, and they also cannot withstand vibrations when they are too long. In our tower, the glass tube level gauge at the bottom of the tower doesn’t work properly, as there is a reboiler at that location and significant vibrations occur there. The other two level gauges make it easier to read the interface when the liquid level is around 50%. When water, oil, and gas are all present simultaneously, and the oil phase does not fill the upper part of the level gauge, it becomes impossible to see the actual interface through the glass plate.

It’s probably because the liquid level measurement range is too long; otherwise, it would be one sensor for measuring the level threshold and another for measuring the actual liquid level

The key is your liquid level measurement length? If it’s too long, it’s inconvenient to install and transport, and its thermal expansion and contraction properties are different

This prevents the device from becoming too long, which would make installation and transportation difficult; moreover, with the two level gauges overlapping, it is easier to determine the accuracy of the liquid level

It’s too long to transport easily; there are too few supports, making it heavy and prone to leakage

I’ve learned that the liquid level gauges used on our glass-lined equipment in the field generally do not exceed 2 meters

Because the maximum length of the level gauge is limited, and there are also standard requirements for this. Installing a remote level gauge allows the reading to be viewed directly in the control room