Integrated intelligent vortex flowmeter for measuring steam requires temperature and pressure compensation
Date: 2025-09-15Read: 4
Many users are unsure whether to perform temperature and pressure checks when inspecting steam flow in steam pipeline installationssupplementCompensation. Here are some experiences summarized by our technical personnel based on on-site use for us to share:
When the temperature and pressure of steam are changed, the density of steam will also change, resulting in measurement errors in the integrated intelligent vortex flowmeter. To reduce errors, temperature and pressure can be adoptedsupplementCompensation methods to reduce measurement errors. The so-called temperature and pressuresupplementCompensation essentially refers to the situation where the temperature and pressure of the measured steam do not match the values selected during planning,And the adopted steam density correction method. The density correction method can be done manually or using instruments orDCSTake the initiative. Taking the measurement of steam flow rate using orifice plates as an example, this article explains that when the practical parameters (temperature, pressure) of the measured steam flow rate are inconsistent with the planned parameters, the flow coefficientalphaCoefficient of beam expansionεAperturedEquivalent values will change. But when the temperature and pressure of the steam do not fluctuate much, that is, the operating parameters do not deviate too much from the planned parameters and have a small impact on the measurement, temperature and pressure should be selectedsupplementCompensation methods are necessary to achieve the desired measurement accuracy. But when the operating parameters deviate too much from the planned values.When the operating parameters fluctuate frequently and are too large, even with temperature and pressure compensation methods, it is still difficult to achieve the required measurement accuracy. At this moment, for a specific orifice plate, the difference between differential pressure and flow rate can only be calculated from scratch. The temperature of saturated steam is a single value function of pressure, so the temperature and pressure of density can be calculatedsupplementReduce compensation into pressuresupplementCompensation. When superheated steam moves in a pipeline, it belongs to single-phase flow. The density of superheated steam is determined by two parameters, temperature and pressure, which are variables. Therefore, both temperature and pressure need to be consideredsupplementCompensation.
