This post provides information about basics of Trip, Interlock, Permissive and Sequences which are regularly used in instrumentation control systems like ESD,
4-20 mA instrumentation and controls usually support a signal range slightly below 4 mA and above 20 mA. For transmitters,
One of the many parameters that must be accurately measured for product quality control, custody transfer, process control, or liquid
The basic layout of every 4-20mA loop consists of a power supply, a transmitter, and passive loop devices. The supply
Guide lines to be followed in Field during DCS Field Loop Checks (with P&ID) and step by step procedure to be followed during DCS Loop Checks.
Basic Guidelines to be followed during Logic Checks (Follow Cause & Effect, Control Narrative, P&ID and Latest Alarm & Trip