What does the maximum static pressure of a differential pressure gauge mean?
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As the title says. Does it refer to the pressure value in the pipeline where the differential pressure gauge is installed?
It can also be understood in this way: specifically, it is the maximum static pressure that the transmitter diaphragm box can withstand.
I mean, the measurement limit of the diaphragm box is more or less the same as its pressure resistance
The maximum static pressure refers to the greatest static pressure that a differential pressure transmitter can withstand on one side, and this static pressure originates from the pressure of the medium in the pipeline.
The pressure exerted by a fluid perpendicularly on the wall of a container is called static pressure, denoted as Pj, with the unit being millimeters of water column. There are positive and negative aspects.
That’s right; it refers to the pressure on the pipeline side that the transmitter can withstand. When selecting a transmitter, it is essential to ensure that the maximum static pressure under pipeline operation does not exceed the value specified for the transmitter, otherwise the transmitter will be damaged
Maximum pressure that a diaphragm box can withstand on one side
My understanding is that a differential pressure gauge measures the difference in pressure between two points, but it cannot determine the actual pressure values at those two points. The static pressure value represents the actual pressure at two points; sometimes the differential pressure is small, but the static pressure is high. In such cases, the gauge must be able to withstand such high pressures in order to provide accurate readings.
This description is fairly comprehensive. The maximum static pressure refers to the highest static pressure that one side of the diaphragm box can withstand under conditions where the flow of the process medium is essentially stable. This is different from the actual pressure of the medium, which is equal to the sum of the static pressure and the dynamic pressure. Strictly speaking, this description of static pressure is a vague concept. The maximum static pressure of a differential pressure gauge is a parameter defined under the theory of ideal fluids.