【Q&A Question 158】2018.06.07
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【Q&A Question 158】June 7, 2018: Briefly describe how to determine whether the indication of a glass level gauge is accurate. First, close the upper and lower lead valves of the level gauge to empty it; then open the upper and lower leads one after another (keeping one of the leads closed). If fluid flows into the glass level gauge in both cases, it indicates that the leads are unobstructed, and thus it can be confirmed that the indication of the glass level gauge is accurate. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Correct: 3 wealth, Incorrect: 1 wealth ； Mass posting of posts – rated based on the lowest score ； Replies that are unrelated to the answer are considered spam and will be deleted immediately. For management purposes, if you need to view content from a few days ago, please go to https://bbs.hcbbs.com/home.php?mod=space&uid=3862647&do=thread&view=me&from=space through the summary post below. The APP short-video skills competition has started! https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1951670
First, close the upper and lower lead valves on the level gauge to empty it, then open the upper and lower leads separately (keeping one of them closed). If fluid flows into the glass level gauge in both cases, it indicates that the two leads are unobstructed, and thus it can be confirmed that the glass level gauge provides accurate readings.
Record the liquid level, then close the upper and lower foot valves to drain the medium from the glass tube level gauge. After draining, open the foot valves again; if the liquid level is the same as it was before draining, it can be assumed that the level is accurate.
First, close the upper and lower lead valves of the level gauge to empty it, then open the upper and lower leads respectively. If fluid flows into the glass level gauge in both cases, it indicates that the leads are unobstructed, confirming that the glass level gauge is accurate.
How to put the glass plate level gauge into use: 1. Check that it is installed correctly and that the level gauge is intact with no damage； 2. If there are multiple valves between the equipment and the level gauge, first open the valves other than those that are part of the level gauge itself or those located closest to the level gauge ； 3. Slowly open the air valve (upper valve) ； 4. Slowly open the liquid valve (lower valve) ； 5. Perform the level gauge flushing operation, and eliminate the possibility of blockages in the pressure guiding tubes during this process. Note: When opening the valve and performing flushing operations, do so slowly to prevent blockages caused by the operation of the level gauge’s leak prevention device. Rinsing procedure: 1. After closing the liquid and water valves, turn them open by 1/4–1/3 turn, then open the drain valve to clean the steam and water pipes as well as the mica sheets. 2. Close the gas valve to flush the liquid-side pipeline and glass sheets. 3. Close the liquid valve and slightly open the gas valve to flush the gas side and the glass sheets. 4. Slightly open the liquid valve and air valve, close the water discharge valve; the liquid level should rise quickly with slight fluctuations and show a clear indication. Otherwise, flush it again. 5. Open the liquid and water valves fully; if possible, verify that the readings match those of other level gauges.
First, close the upper and lower lead valves on the level gauge to empty it, then open the upper and lower leads separately (keeping one of them closed). If fluid flows into the glass level gauge in both cases, it indicates that the upper and lower pressure tubes are unobstructed and that the glass level gauge is accurate.
First, close the upper and lower lead valves of the level gauge to empty it, then open the upper and lower leads respectively. If fluid flows into the glass level gauge in both cases, it indicates that the leads are unobstructed, confirming that the glass level gauge is accurate.
First, close the upper and lower lead valves on the level gauge to empty it, then open the upper and lower leads separately (keeping one of them closed). If fluid flows into the glass level gauge in both cases, it indicates that the two leads are unobstructed, and thus it can be confirmed that the glass level gauge provides accurate readings.
First, close the upper and lower lead valves on the level gauge to empty it, then open the upper and lower leads separately (keeping one of them closed). If fluid flows into the glass level gauge in both cases, it indicates that the two leads are unobstructed, and thus it can be confirmed that the glass level gauge is giving accurate readings
1. Check that the installation is correct and that the level gauge is intact with no damage； 2. If there are multiple valves between the equipment and the level gauge, first open the valves other than those that are part of the level gauge itself or those located closest to the level gauge ； 3. Slowly open the air valve (upper valve) ； 4. Slowly open the liquid valve (lower valve) ； 5. Perform the level gauge flushing operation, and eliminate the possibility of blockages in the pressure guiding tubes during this process.