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Electrical

AC Adjustable Speed Drives

Introduction An adjustable speed drives (ASD) is a device used to provide continuous range process speed...
Electrical

High resistance measurement using Megger

What is meggar instrument? Megger is used to measure very high resistances, such as those...
PLC

Low Cost PLC’s for beginners

Introduction I would like to introduce some low cost PLC's (Programmable Logic Controller) hardware for beginners...
Control Valve

What is balancing in control valves?

Introduction Balancing is the term used when the resultant force on a plug is neutral....
Control Valve

What is valve manifold? – 3 valve and 5 valve manifolds

What is a valve manifold? The valve manifold used to protect the DP transmitter from...
Control Valve

What are the Types of control Valves?

Table of ContentsLinear Motion Control valve Globe Type Control ValveGate Type control ValveDiaphragm Type...
Electrical

How to reduce measurement noise?

There are a lot of possibilities for combining unwanted signals in process variable and...
Valves

Difference between single seated & double seated control valves

Single Seated Single seated valves are one form of globe valve that are very common...
Valves

Control Valve Noise and Cavitation

Introduction Sound is generated from the movement of fluid through a valve. It is only...
Flow Measurement

what is Turbine flowmeter?

Introduction Turbine flowmeter have rotor-mounted blades that rotate when a fluid pushes against them. They...
How to

Valve stem packing – replacement procedure

What is valve stem packing? Valve stem packing is the process of tightening the valve...
Control Valve

Control valve sizing – Equations & its importance

What is valve sizing & it’s importance? The valve sizing can be defined as picking...
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