Explanation of mutual aid PID diagram
Thread Content
Since I have just started learning about PID control diagrams, this tank represents a cascade control system; but what exactly is the function of the elements marked?
FT171 is temperature-compensated (is there also pressure compensation? ), the output is fy171. FY171 serves as the secondary circuit of the cascade loop, while LT172 functions as the primary circuit of the cascade loop; together they constitute the cascade loop.
Regarding compensation, do you have any detailed documents on this topic? I’d like to know how the calculation logic works; it would be fine if you could provide a link to online resources as well. Hehe
Is it a liquid flowing in the pipe? ? Does the liquid still need temperature and pressure compensation? ? ?
By directly searching for formulas for gas temperature and pressure compensation, one can find a great deal of information, quite detailed