Door interlocks are being used more frequently for facilities requiring a higher level of security, such as bio-medical facilities built to serve the healthcare industry. While some projects use ...

The devil is in the details. This especially runs true when it comes to the automation of HVAC systems. The slightest nuances, if misunderstood, can have devastating effects. One prime example is the ...

Last month’s column introduced the concept of an interlock. An interlock is a dependency between two processes. Process 2 cannot operate unless Process 1 is in a certain state. For example, if a ...