Steps for putting a differential pressure transmitter with a backflow prevention system into operation and how to adjust it
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The backblast system consists only of stop valves, check valves, and gate valves with flow-limiting orifices; there are no other pressure gauges to indicate pressure during backblasting. What is the procedure for using general-purpose instruments? What other issues should be considered when putting it into use? ? ?
We use many of the instruments mentioned by the original poster, but it is unreasonable to have no pressure gauge as suggested; without one, it would be difficult to determine whether the pressure transmission lines are unobstructed. When putting the system into operation, air should generally be introduced first to prevent the medium from blocking the lines.
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None of ours are equipped with pressure gauges. . In a catalytic cracking unit, pressure, density, level, and pressure differences are all measured in the two reactors. To check whether the pressure transfer pipes are blocked, it is necessary to close the backflow valve at the base, remove the flow control orifice plate, and open the vent on the transmitter side in order to determine the amount of gas escaping. It is important to note that the vent should not be opened without first closing the base valve; the backflow system is generally used for measuring powdered materials, as these can easily cause blockages in the pressure transfer pipes
As mentioned above, when putting it into use, first turn on the air supply and then open the root valve
I think it refers to a purge flow meter used for measuring pressure or level; if that’s the case, I really would like to learn more about it*.
Both the sensors and the connection points have mechanical dead zones. The reverse airflow cannot blow outward from the sensor diaphragm either. As a result of this reverse blowing, dust accumulates on the diaphragm and in those dead zones; the more it’s blown, the more compact the dust becomes, and the more clogged things get. Hehehe… Don’t be fooled by the existence of reverse blowing devices – they’re used in many industries. But in reality, they’re nothing but utterly stupid weapons
The catalytic cracking unit here modified the gate valves equipped with flow control orifices by simply drilling holes directly in the valve cores, which proved to be an effective approach – there was no need to remove the flow control plates, and the flow rate remained constant
So mysterious, hope it’s useful zzzzzzzzzzzzzzzzzzzzzzz
It is crucial to check whether the pressure guide tube is unobstructed before putting it into use； Pressure issues are common with single-stage blowers; pay attention to the zero-point shift of the transmitter when there is no medium present.