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what are pressure relief valves?

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

what is cascade control?

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

Strain gauge pressure measurement

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

what are venturi tubes?

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

Radiation level measurement techniques

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

FAIL SAFE LADDER LOGIC PROGRAM

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

BASIC LADDER LOGIC PROGRAMS

Ladder diagrams Ladder diagrams are specialized schematics commonly used to document industrial control logic systems....

Zero Elevation and Zero Suppression in Level Measurement

Introduction It would be idealistic to say that the DP cell can always be located...

Basics of Butterfly valves

The butterfly valve is a rotary control valve. Standard butterfly valves are dampers that are...

BASICS OF ON/OFF CONTROLLER

Introduction In control theory, an on/off controller, also known as a hysteresis controller, is a...

Capacitance pressure transmitter

Capacitance pressure transmitter is a pressure measurement device which convert applied pressure into a...

OPEN & CLOSED LEVEL MEASUREMENT

Introduction In industries level measurement is a crucial process.there are different types of storage tanks...