Should I choose an orifice plate flowmeter or a vortex flowmeter to measure steam?

Project Overview

　　On the choice of steam flowmeter, many people will be entangled in the choice of orifice good or vortex good, in general, orifice and vortex are two of the more commonly used flow measurement instrumentation, of course, they are also based on the actual application of the site in the working conditions and the environment of the different, in order to play and highlight their respective advantages. Today I bring you to take a look at the differences between the two.

• 1、Orifice plate flowmeter is a kind of differential pressure flowmeter, differential pressure type is also known as throttling type, that is, when the fluid flow through the throttling device generated by the pressure difference to achieve the flow measurement called differential pressure. This type of flowmeter can be used for petroleum, chemical, metallurgy, electric power, heating, water supply and other fields of process control and measurement, is widely used in coal, chemical, transportation, construction, textile, food, medicine, agriculture, environmental protection and people's daily life and other areas of the national economy, it is the development of industrial and agricultural production, energy conservation, improve product quality, improve economic efficiency and the management of the level of the important tools in the national economy. It occupies an important position in the national economy. In the process automation instrumentation and devices, flow meter has two major functions: as a process automation control system for the detection of instrumentation and measurement of the total amount of material table.
• 2、Vortex flowmeter it is by setting vortex generator in the fluid, these vortices can be detected to calculate the range of the display flow rate is based on such a principle to carry out the measurement. It is characterized by small pressure loss, large range, high accuracy, in the measurement of work volume flow is almost independent of the fluid density, pressure, temperature, viscosity and other parameters. There are no moving mechanical parts, thus high reliability and low maintenance. Instrument parameters can be stabilized for a long time. Vortex flowmeter adopts piezoelectric stress type sensor, high reliability, can be in -20 ℃ ~ +250 ℃ working temperature range. There are analog standard signals and digital pulse signal output, easy to use with computers and other digital systems, is a more advanced, ideal measuring instruments.

　　Back to the beginning of the article, we know that the "steam" generally have superheated steam and saturated steam, we will single them out from the measurement of the temperature of this item, the vortex measurement temperature zui high can only reach 350 ° C, but the orifice plate temperature zui value can reach 700 ° C, this is the strong points of the orifice plate, through the above brief description Analysis, such as measuring steam or orifice plate flowmeter is more appropriate. Instrumentation is the cornerstone of the process of industrialization, only the choice of industrial site selection of the appropriate instrumentation, can get twice the result with half the effort, automation processes can be more automated.