Issues regarding the installation of the condensation tank
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I would like to ask everyone: when using a differential pressure transmitter to measure steam flow, a condensation tank is installed at the midpoint between the two pressure conduits. If these two condensation tanks are not at the same level, an error occurs. Can this error be eliminated by adjusting the transmitter’s zero point? Thank you for your guidance!
No, even with zero-point migration, errors will still exist
Where is there anyone who installs a condensate tank in the middle of the pressure guiding pipe? It should be installed at a level position or slightly above the horizontal level, so as to ensure no condensate in front of the tank and stable height of the condensate column behind the tank.
It’s better to change this installation.
It does not meet the installation specifications, making it difficult to ensure measurement accuracy.
The original poster may not have expressed themselves clearly; first of all, it is necessary to ensure that the locations of the two condensate tanks are higher than those of the pressure sampling points on the process pipelines. If this requirement is not met, a backflow cannot be established, and it will be impossible to reach a stable liquid level. If the conditions are met for the following steps, fill the two isolation tubes with water. Turn on the flow in the order in which they were inserted, zero out the reading while the flow is not yet stopped, then stop the flow and set it to negative to determine the differential pressure. Adjust the value by that amount (pay attention to the positive or negative sign: if it’s a negative value, adjust in the negative direction, and vice versa). Disconnect the three-valve assembly, open one valve, and then reconnect the three-valve assembly. At this point, it is crucial not to leave all three valves of the assembly open in order to prevent water from being flushed away. That will do
The 6th floor is the correct answer, but couldn’t we simply adjust the condenser tank to be horizontal? ?
Generally speaking, it’s difficult to achieve levelness; there is always a slight discrepancy. Moreover, as the pressure guide tube is used, it deforms, which causes the two isolation tubes to lose their levelness
The installation is as you said; in fact, the two condensate tanks are not at the same level. This error should be correctable by adjusting the transmission zero point, right?
The two condensate tanks are not at the same level; it’s unclear what the difference in liquid levels is. When they are not at the same level, this can be corrected by adjusting the position of the transmitters, but it’s important to keep records for others’ reference; otherwise, those who are unaware of the situation may adjust them again.
Of course it can be corrected; I’ve explained the method in great detail. Once you understand the principle, there’s no need to worry about causing damage