Question: Installation issues with single-flange pressure transmitters
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As shown in the diagram, the flange of the instrument on the device conflicts with the already installed pipeline. I would like to ask the experts: if a portion of this pipeline used for taking pressure readings from the instrument is cut off, and then a vertical section of pipe is added followed by a horizontal section, will this installation method affect the accuracy of pressure measurement? Or, what is the best way to handle this without changing the process pipelines? The gauge is a single-flange pressure transmitter with a capillary. Thank you so much! ! !
No flange was seen; only a root valve was present. If a flanged pressure transmitter must be used, drilling and welding again is the only option. Isn’t there another pressure tapping hole right next to it? Can’t use a pressure transducer for installing the pressure guiding pipe?
Perhaps the image is not clear; there is no root valve. What is marked with a line in the image is a pressure tapping pipe connected to the equipment, equipped with a 50-sized flange. The transmitter has already been purchased; it’s a single-flange transmitter with a capillary, model 50. Once it’s here, I just need to connect the two flanges together. The flanges of the pressure tapping ports next to it do not match.
Since it couldn’t be installed, of course we had to drill holes again from scratch.
If it’s a pressure vessel, reopening the hole is definitely not an option; think of other solutions. A pressure transmitter can be installed on the outlet pipeline
Cutting it off, welding a flange, and then reconnecting the pressure transmitter has no significant impact; here, the medium is corrosive and prone to crystallization, and absolute pressure is being measured, which is why a flange-type connection was chosen. A regular pressure sensor can also be covered up, a hole can be made to weld in a pressure transducer tube, and then a regular pressure transmitter can be installed.
This reserved hole is plugged shut. Keep the process equipment at the same height, and re-weld the reserved pipes in other locations.
If it is indeed a pressure transmitter, then there should be no problem regardless of how you position it. The only issue is where you place the pressure transmitter; the pressure sampling point seems to be at an appropriate height. If the transmitter is placed lower down, then you will need to perform calibration adjustments. It’s not clear whether the calibration range for the capillary section has also been adjusted. Simply taking pressure samples does not affect accuracy, but you need to ensure that the calibration adjustments are done properly.
Two pressure transducers are used to measure the liquid level; one of them is used to measure the pressure in the positive pressure chamber. The liquid is a crystallizable, corrosive saltwater. Cutting the bend won’t have any effect, right?
There is no impact, but proper insulation is necessary, as it tends to crystallize easily. I see that this voltage transformer doesn’t have a flushing ring either; if crystals form over time, maintenance will be difficult.
There is no impact if no liquid accumulates in the pipeline.