Looking for an app that allows you to choose from engineering units (like pressure, temperature, level, or flow) and process signals (like 4–20 mA or 1–5 VDC) for your calculations? ISA has one!
"Solving complex process variable and loop signal calculations can leave you scratching your head and reaching for your old algebra books - wasting a lot of time and brainpower that you could be using to get your job done. That’s why ISA has developed a brand-new app for iOS users to help you solve for a process variable or its associated loop signal in record time." - ISA Blog