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Instrumentation

Pressure Relief valves

Overview: The Relief valves are safety valves prevent equipment damage by relieving accidental over-pressurization of...
Flow Measurement

Orifice Plates Flowmeters

The Orifice plate is differential pressure flow measurement device. An orifice is simply a...
Pressure Measurement

Basics of Pressure Scales

Introduction There are three pressure scales used for measuring pressure.   The Absolute pressure scale The...
Instrumentation

What are pneumatic controllers ?

 Introduction A controller is a device that senses differences between a desired condition and measured...
Flow Measurement

Magnetic flowmeter

Magnetic flowmeters are velocity type of flowmeters. An electromagnetic flowmeter can work with almost all...
Instrumentation

BASICS OF AN INSTRUMENT AIR SUPPLY SYSTEM

Introduction The air used must be cleaned, dry and oil-free to ensure that small lines, ...
Valves

what are pressure relief valves?

INTRODUCTION Protection against over pressure is one of the most important design tasks in...
Control System

what is cascade control?

A simple control system drawn in block diagram form looks like this:   Information from the...
Instrumentation

Strain gauge pressure measurement

The strain gauge is a passive transducer used to pressure, which converts the change...
Flow Measurement

what are venturi tubes?

INTRODUCTION Venturi tubes, flow nozzles, and flow tubes, like all differential pressure producers, are based...
Instrumentation

Radiation level measurement techniques

The radiation/nuclear level measurement technique is used to measure the level of fluid or...
Instrumentation

FAIL SAFE LADDER LOGIC PROGRAM

Fail-safe design In control systems, safety is (or at least should be) an important design...
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