Why should the pressure source component be installed in front of the temperature source component?
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According to the specification, on the same pipe section, the pressure source component must be installed in front of the temperature source component. Please analyze the reason.
Please explain what norm you are talking about! Or take a screenshot!
There must be a certain visual area in front of the pressure measurement point to prevent pressure fluctuations and cause inaccurate pressure measurement.
Since temperature measurement requires the insertion of a temperature sleeve, it will have a certain impact on the flow rate, pressure and other parameters of the medium in the pipeline (especially pipelines with small diameters), thus affecting the authenticity and accuracy of the measured values. There are also certain requirements in the corresponding specifications, which can be consulted!
If the temperature is installed before the pressure, the measured pressure will be inaccurate.
The temperature sleeve is on the front and the pressure you measured is not accurate.
This requirement is stipulated in the "Construction and Acceptance Specifications for Automated Instrument Engineering" GB 50093-2002.