Problems with double-flange level gauges
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The diaphragm on the negative pressure side flange of a double-flange level gauge is damaged; it is desired to convert it to a single-flange design. By draining the silicone oil from the capillary on the negative pressure side, can it be used within the allowable range of the measurement scale? Is this feasible? I believe it’s possible in principle (in practice, since a single-flange unit was not available at the time, a good double-flange unit was used as a temporary solution)
One of our atmospheric storage tanks uses double flanges for liquid level measurement; it is suspected that the pressure tap pipe at the top is blocked, creating a sealed space between it and the flanges. As a result, the pressure (liquid level) indication changes with temperature changes. We simply removed the upper flange and hung it upside down on the tank’s flange. After adding silicone oil, the zero point needs to be recalibrated.
The zero point needs to be recalibrated; I think as long as the diaphragm box at the gauge head is in good condition, it should be possible to switch to a single-flange design without any problems.
It seems fine; whether it’s actually feasible can be determined by calibrating it with a standard table....
It’s possible, but it is recommended to cut the capillary on the negative pressure side at the base of the transmitter. Be careful with the cutting tool to ensure that there are no burrs or similar imperfections on the edges of the capillary holes; use a needle-like tool to clean them, and then wipe away any remaining silicone oil with alcohol.
It can be used; first determine the measurement range, and then take measures to protect the negative pressure side from dust and corrosion
It can be used, but be careful with the range
We have used a pressure transducer instead of a differential transducer to measure the water level
It should be able to function normally; it’s equivalent to having one end connected to the atmosphere
It’s so wide~! I agree with the view from the 7th floor; it is recommended to address the capillary interface on the low-pressure side. That capillary inlet can be removed, right? I’ve never opened it before; if the original poster doesn’t plan to send it back to the factory, why not give it a try and open it?