A control valve that is 90% closed at normal operation is wrong . Design for:
Sensor drift alerts, thermocouple burnout indicators, and loop voltage diagnostics.
The process industry relies entirely on its ability to see what is happening in a process and manipulate it to maintain safety, efficiency, and product quality. Field measurements act as the "eyes," while final elements (like control valves) act as the "hands" of the operation. A control valve that is 90% closed at
Modern measurement instruments incorporate:
Ideal for conductive liquids and slurries. Obstructionless design prevents clogging. Field measurements act as the "eyes," while final
A systematic approach is required for checking and commissioning new installations. This includes:
If sensors are the eyes, final elements are the hands that turn the valves. The most common final element is the , but the category also includes dampers and variable speed drives (VSDs). A systematic approach is required for checking and
Calibrating and replacing parts on a strict time-based schedule (e.g., every 6 months). While safer than reactive maintenance, it can result in unnecessary labor and throwing away perfectly good equipment.
