P&ID Guidelines for Control Valves
A piping and instrumentation diagram/drawing (P&ID) is a diagram in the process industry which shows the piping of the process
What is a Thermopile ?
A thermopile is an electronic device that converts thermal energy into electrical energy. It is composed of several thermocouples connected
What to Choose RTD or Thermocouple ?
Thermocouples (TCs) and resistance temperature detectors (RTDs) are the most widely used temperature sensors in automation and process control. They
How a 4 Wire RTD Works ?
4 Wire RTD Principle The most accurate lead wire configuration is the “true” 4-wire configuration. In a true 4- wire
What is PID Controller Bumpless Transfer ?
Bumpless Transfer Bumpless transfer is either a manual or automatic transfer procedure used when switching a PID controller from auto
Feedforward Vs Feedback Control
Feedback control Feedback control is an important technique that is widely used in the process industries. Its main advantages are
PID Controllers with Output High Select Logic
The below figure 1 shows a typical control scheme with two controllers driving the same control valve via high select
Overview of Split Range Control
A very common control scheme is split range control in which the output of a controller is split to two
Self Actuated Pressure Control Valve Principle
Self actuated pressure control valve do not depend on any external signal for pressure control. As the name suggests, pressure in