Level measurement is as old as the Nile, but some application problems simply will not go away. Editor in Chief Walt Boyes provides his thoughts on the results of the recent ControlGlobal.com Web Poll.
Even though standards allow sharing of the physical layer for safety and control communications, Parity Check columnist Ian Verhappen doesn't feel that too many users, if any, will mix the two systems.
DigitalField Insider Columnist Ian Verhappen notes that the most important measure that can be taken to prevent difficulties with a given fieldbus or digital networking project is protocol communication.
Control Talk columnists Greg McMillan and Stan Weiner, PE, weigh in with answers to the January Puzzler that asked why the load cell indication would shift at high noon regardless of the time in the batch sequence.
What's wrong with those ramps? Well, as the performance of control loops declines over time, there are better alternatives to properly handle potential problems. Check out what to avoid when tuning your ramps.
No matter how the organizers spin it, the decision to move National Manufacturing Week to the suburbs next year won’t resonate well with exhibitors, according to Industrial Networking Editor in Chief, Joe Feeley.
This article argues that Velocity Limit (VL), which can be used to detect and take corrective action against faulty signals as part of an overall alarm strategy, is not being used as much as it should be.