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Instrumentation

How does an optical Encoders works?

Introduction The encoders use rotating discs with optical windows, as shown in the figure below....
PLC

COUNTERS in PLC Programming

Introduction There are two basic counter types: count-up and count-down. When the input to a...
PLC

An introduction to PLC timer’s

Introduction This function is used to provide a time-delay in a circuit. In the example...
Instrumentation

Troubleshooting of a transmitter

Introduction In this session we are gonna discuss about troubleshooting of a transmitter.we are gonna...
Control Valve

Slide valves and it’s advantages and disadvantages

Slide valves are one of the many variations of the gate-type valve and were...
Control Valve

Control valve Noise – Cage trim

Noise produced in pipelines may be pump-generated (changes in power and pressure. or varying...
Communication

Installation & Troubleshooting of communication systems -part 2

Introduction As you can see we already discussed about some of the Installation & Troubleshooting of...
Communication

Installation & Troubleshooting of communication systems -part 1

Introduction  When solving problems in a communications system, the engineer or technician tries to use...
Control System

Manifold Gauges or air conditioning Gauges.

What are manifold gauges?   A manifold gauge is chamber device that is used to control...
Control System

Overview of Advanced process control Methods

Introduction Advanced process control (APC) is a broad term within the control theory. It is...
Instrumentation

What is Instrumentation documentation?

Introduction Instrumentation documentation consists of drawings, diagrams and schedules. The documentation is used by various...
Electrical

Vacuum Circuit Breaker or VCB 

Introduction A circuit breaker is a device that interrupts an electrical circuit to avoid unwanted...
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