P&ID Guidelines for Centrifugal Compressor Systems
Typical P&ID for a centrifugal compressor system Proper centrifugal compressor symbol should be selected first, as shown in figure-1. Normally, a centrifugal compressor is accompanied by a Knock Out Drum…
Ultrasonic Level Measurement
Ultrasonic level instruments measure the distance from the transmitter (located at some high point) to the surface of a process material located farther below using reflected sound waves. The frequency…
Sounding Level Transmitter Working Animation
Animation Credits : KANSAI Automation A sounding transmitter is located on top of the tank or silo to be measured. A plummet, selected for the service is lowered until it…
Common Terms Used in Control Valves
In application of control valve, many terminologies are used and some Common Terms Used in Control Valves are actuator, trim, bonnet, bench set etc. Here we introduce some of these…
The need for automatic controls
The subject of automatic controls is enormous, covering the control of variables such as temperature, pressure, flow, level, and speed. The objective of this article is to provide an introduction to…
Control Valve Characteristics
All control valves have an inherent flow characteristics that defines the relationship between 'valve opening' and flowrate under constant pressure conditions. Please note that 'valve opening' in this context refers…
Distributed Control System Interview Questions
This article provides list of Distributed Control System Interview Questions and Field Instrumentation Questions which are faced in a interview.
Potentiometer Working Principle Animation
Potentiometer also known as pot is generally used in circuits to provide variable resistance or variable voltage. The heart of the potentiometer is a resistive strip inside it through which…
Instrument Technician Interview Questions and Answers
This article provides the Instrument Technician Interview questions and answers. Instrument Technician Interview Field Instrumentation What does ARRH and # refer to in valve specification? AARH refers to average roughness…
Valve Technician Interview Questions
Questions & Answers on Valves , Important Interview Questions on Control Valves, Valve Technician Interview Questions, Questions of Valves. Valve Technician Interview Questions Types of Leakage There are two types…
