[Daily Question 20090222] Double flange differential pressure transmitter
Thread Content
Let’s talk about the problems encountered during the maintenance of the double-flange differential pressure transmitter for measuring liquid level or interface level, or the adjustment experience!
If you install a short pressure pipe in a tank or tower and then install the root valve and liquid level transmitter materials, it will easily block the short pressure pipe and cause inaccurate liquid level detection. If it is clogged and the front section of the root valve is blocked, you will have to empty the tank and the tower for maintenance. If you encounter such blockage, you must use a convex diaphragm transmitter detection. Instead of using a flat diaphragm transmitter, the convex diaphragm transmitter is a convex diaphragm directly inserted into the tank or tower body. In this way, there will be no blockage problem. Only when the transmitter breaks down, the root valve will not be installed. Therefore, it needs to be determined according to the actual situation, and it is produced for safer and more economical reasons.
The double flange liquid level transmitter can be installed at any position below the upper pressure port, and the migration amount is only related to the distance between the two pressure ports. According to relevant experts, the transmitter should not be higher than the upper pressure port. For some reason, it has not been verified.
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Let’s talk about the problems encountered during the maintenance of the double flange differential pressure transmitter for measuring liquid level or interface level, or the adjustment experience. 1. The installation position cannot be higher than the detection point, otherwise it will easily cause measurement deviation. 2. The measurement point cannot have negative pressure, otherwise it will easily damage the diaphragm. 3. The detection medium should not have sharp crystals, otherwise the diaphragm will be easily damaged. 4. Check the diaphragm regularly.
"According to relevant experts, the transmitter should not be higher than the upper pressure port. "This is because the diaphragm of the transmitter is subject to negative pressure and is easily damaged!"