Square Root Scaling for Differential Pressure (DP)-Flow MetersInstruments should be ranged to measure not only expected values but all values the system can produce. During upsets, actual values often exceed 20mA values for instruments tightly ranged for normal process conditions. For instruments with linear scale and additional capacity, the fix is simple: increase the 20mA scale on both the instrument and analog input (AI) in the controller. But nonlinear relationships complicate scale adjustments.
The purpose of this article is to outline general, acceptable best programming practices across all control system platforms. The intent is not to define how to program specific functions, but to cover a level of programming content that provides an exceptional deliverable, consistent in approach and well planned.
As the popularity of craft beer continues to grow, so do the options available to brewers for packaged OEM brewing systems. These systems come in a wide variety and are a great way to start off. However, these standard systems sometimes lack key features that can improve the brewing process. I discuss some of these shortcomings in my recent interview with Crooked Handle Brewing head brewer, Jason Moore.
Due to advancing technologies, automation systems utilize digital network infrastructures and if these systems are not secured properly they can be very susceptible to hazardous risks. Maintaining a secure automation system can be achieved by using proven steps that consist of industry best practices, which are customized to meet the desired level of security required.
If your control system is at the end of its life-cycle, but you’re unable to afford the time or expense of an upgrade to the whole system, there are some things you can do in the interim to increase the longevity of your aging system. Whether this is a new installation or a legacy system, many of these tips are useful independent of your control systems age.