What does vortex flowmeter temperature and pressure compensation mean?

Project Overview

　　In industrial production, energy measurement, environmental monitoring and many other fields, the accurate measurement of fluids is crucial. The implementation of flowmeter temperature and pressure compensation technology, to improve the vortex flowmeter measurement precision, to ensure data accuracy is of great significance, that vortex flowmeter temperature and pressure compensation what does it mean? Qingdao and Sheng measurement and control with an in-depth understanding of vortex flowmeter temperature and pressure compensation.

　　First, what is temperature and pressure compensation

　　Temperature and pressure compensation, as the name suggests, refers to the “temperature” and “pressure” compensation. The two most common factors affecting the measured value of the flow is the pressure and temperature, in order to make the measured value of the flow is closer to the actual value, the need for flow “into the complementary”, the influence of temperature and pressure factors into account, the measured value of the flow to amend the compensation, so as to get a more accurate measured value, which is what we usually call the “Temperature and pressure compensation.

　　Second, vortex flowmeter temperature and pressure compensation to realize the way

　　Vortex flowmeter temperature and pressure compensation is realized in two main ways:

　　Integral temperature and pressure compensation: temperature and pressure sensors set in the flowmeter integrated operation, measurement and display. This flowmeter in the form of intelligent, with its own temperature and pressure compensation function. Converter can be directly measured by the sensor volume, temperature, flow and pressure signals are converted and processed to achieve the goal of integrated on-site display.

　　Split temperature and pressure compensation: by simple vortex sensor, a separate temperature sensor, a separate pressure transmitter and display instrument flow totalizer combination of four instruments. This approach requires users to install and configure their own sensors and transmitters, and through the flow totalizer for data processing and display.

　　Third, what occasions need temperature and pressure compensation

　　(a) When measuring gas, temperature and pressure compensation is required at the same time; gas is generally standardized volume flow settlement. Because the volume flow rate of gas temperature or pressure changes, the flow rate will change.

　　(b) Measurement of superheated steam, the need for temperature and pressure compensation at the same time; steam are generally to the mass flow settlement. Because the temperature or pressure has any one change, the density of steam will change, the mass flow rate also changes.

　　(iii) Measurement of saturated steam requires single temperature compensation or single pressure compensation. The density of saturated steam has a fixed correspondence with temperature or pressure (Saturated Steam Density Table), and the density of saturated steam can be determined by knowing either one of them.

　　(iv) When measuring liquids, pressure compensation is generally not required. Below 5MPa, only the temperature effect is generally considered, and temperature compensation is required for accurate measurement. General measurement, you can not use any compensation.

　　Vortex flowmeter temperature and pressure compensation is an effective way to improve the accuracy of flow measurement. With the continuous improvement of the level of industrial automation and the continuous development of measurement technology, the flowmeter temperature and pressure compensation technology is also progressing and improving. In the future, the temperature and pressure compensation of flowmeter will be more intelligent and accurate, and Qingdao Hesheng Measurement and Control will provide more efficient and reliable flow measurement solutions for industrial production and energy management, and help improve industrial production efficiency.