Process Control - Introduction to Process

Simple construction and easy to maintain.

A washing machine.

To maintain the required quality in the output.

<p>Disturbances and changes in the calibration cause errors, and the output may be different from what is desired.</p> Signup and view all the answers

<p>The target value of the process variable that is desired to be maintained.</p> Signup and view all the answers

<p>Level, flow, temperature, density, pH, mass, conductivity</p> Signup and view all the answers

<p>Process control maintains variables like temperature, pressure, flow, level, and chemical composition constant, while servo control involves consistently and accurately controlling moving parts or maintaining constant speed.</p> Signup and view all the answers

<p>In open loop control system, the output is neither measured nor used for comparison with the input, while in closed loop control system, there is a feedback mechanism where the output is measured and compared with the input.</p> Signup and view all the answers

<p>Process: a series of actions, motions, or operations leading to some result the manufacturing process.</p> Signup and view all the answers

<p>Process manufacturing is a production method that creates goods by combining supplies, ingredients or raw materials using a formula or recipe.</p> Signup and view all the answers

<p>Process Variables: A physical or chemical quantity that is usually measured and controlled in the operation of a water, wastewater, or industrial treatment plant.</p> Signup and view all the answers

<p>Process manufacturing is frequently used in industries that produce bulk quantities of goods, such as food, beverages, refined oil, gasoline, pharmaceuticals, chemicals and plastics.</p> Signup and view all the answers