Acronyms Are Hard: PID v P&ID
Acronyms can be hard to figure out. If you want proof, look no further than our Acronyms Are Hard Series! When jumping in between a few different industries, these seemingly harmless terms can lead to confusion, mass hysteria, or worse potential problems with the end result.
Generally speaking, we do our best to define acronyms if we even use them at all in order to make sure that we don’t run into those issues. After we’ve been working on the project for a while all the appropriate acronyms will be pined to the top of the projects and/or burned into our minds so we’ll never forget them. That is until the next project comes around and we need to re-learn everything.
Two of the most confusing Acronym’s are PID and P&ID. It’s hard enough when they are clearly articulated.
PID stands for Proportional Integral Derivative. Typically associated with Proportional Integral Derivative Control or PID Control. A PID is used for a control loop and there are some people who have their PhD in PID! Most Corso customers are tuning PID’s as part of their PLC’s. Some have stand alone “controllers” for a specific loop. The how to tune is the same, the difference is in additional functions. Some of those people must have written this Wikipedia article, because it goes into extreme detail.
Many software options offer an “auto tune” function, this hardly ever works well. Generally learning a couple of basic tuning skills will take you a long way. Corso is not going to teach you how to tune a PID loop. We will offer this pretty good guide that we’ve found.
P&ID stands for Piping & Instrumentation Diagram. The internet tells us that this illustrates the piping processes, and interactions with other installed equipment and instrumentation. You can learn more from another great Wikipedia article, because we can’t show you any of our customers P&ID’s.
What this means to us, this beautiful document is what tells us what your process looks like in order to make everything work. This will give us the majority of the information we need in order hash out the PLC code, from there we can build HMI screens.
The creation of a SCADA will need to be worked though with the people at the facility to make sure that Corso knows what you are looking for at the individual levels. An MES is furthering the process of the SCADA and then figuring out where the low laying fruit is in the system so that we can help you capture it.
Could these two acronyms be the most confusing while in the middle of a conversation? Yes.