Seeking help regarding DCS control of blower flow rate
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The factory plans to introduce a DCS system for configuring, controlling, and displaying data related to the flow meters of the heating boiler blowers. Do you have any recommendations for good flow meters? What else needs to be considered when configuring DCS control systems? Generally, how many steps can be taken for planning? Please give me some advice! Thank you! :hug:
The outlet pipelines of blowers are generally large in size; therefore, pitot tube types such as Anubis flow meters, average velocity tubes, and delta barometers can be used, as well as V-cone flow meters. When configuring DCS, attention should be paid to temperature and pressure compensation.
Is it not appropriate for the moderator to say that “temperature and pressure compensation should be taken into account when configuring DCS”? If the flow meter used by the poster is installed on the air duct, then it will only measure air; in that case, can temperature and pressure compensation be omitted? Moreover, in such places, generating traffic is only done for the purpose of easy monitoring, and there is no need for any measurement; adding heating and pressure compensation seems a bit wasteful At the site, I saw that the ductwork was equipped only with Anubaa flow meters, and no temperature and pressure compensation devices were used. Over time, even the flow meters became unnecessary; once the operators became familiar with the process, they basically stopped paying attention to this parameter.
Theoretically, what temperature and pressure compensation is supposed to do is to indicate the effect through just the numerical value; it can be omitted, and the measured data can be multiplied by a coefficient
For now, I don’t plan to control the data on-site; it’s sufficient for just displaying the air volume data. I’m also considering whether temperature and pressure compensation is necessary. Someone upstairs said that the measured data should be multiplied by a certain coefficient – what kind of coefficient would that be? Are there any other things to keep in mind? How should I choose between cumulative and frequency types?
Additional note: Pressure compensation is generally required; it’s not a problem if no compensation is used, but a coefficient can be multiplied instead
A V-cone flow meter can be used, or a meter with lower pressure loss such as a Weiba can be employed; using such a meter allows for more accurate temperature and pressure compensation. Whether to use one or not depends on the level of investment desired.
Which control scheme should be chosen? Is it a manual operator or a single-loop system? I want to add temperature and pressure compensation, but I don’t know how to set the standard temperature and standard pressure Also, if it is to control the air volume of the exhaust fan, which circuit should be chosen?
The DeltaBar flow meter is recommended; it offers decent accuracy, does not require temperature or pressure compensation, and is suitable for process reference purposes. Multiple gas generation furnace fans in our company are in use (the medium is air, with a pressure of several dozen kPa)
Are the flow meters upstairs expensive? Are there any other configuration examples? Could you send it to the email waterbaby_star@163.com?
I’m sorry, moderator – I’m a beginner and just figured out how to rate
The only national general agent for DeltaBar in China: http://www.maxonic.com.cn/Article/index.html； I am by no means a staff member of Wanxun; I am recommending it to you based on its actual performance.