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Instrumentation

FAIL SAFE LADDER LOGIC PROGRAM

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

BASIC LADDER LOGIC PROGRAMS

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

Zero Elevation and Zero Suppression in Level Measurement

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

Basics of Butterfly valves

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

BASICS OF ON/OFF CONTROLLER

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

Capacitance pressure transmitter

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

OPEN & CLOSED LEVEL MEASUREMENT

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

DRY & WET LEG LEVEL MEASUREMENT

Introduction  There are so many level measuring techniques in present.one of the method is measuring...
Temperature Measurement

Resistance Temperature Detector ( RTD )

Resistance Temperature Detectors (RTD) are temperature measuring transducers used in industrial applications. RTDs are...
Instrumentation

The pneumatic recorder

Introduction The pneumatically operated recorder is still used today, particularly in remote locations.  It does...
Instrumentation

PROGRAMMING LOGIC DEVICES (PLC)

Introduction A digitally operating electronic apparatus which uses a programming memory for the internal storage...
Temperature Measurement

Basics of Thermistor – Advantages and Disadvantages

A thermistor is a semiconductor device formed from metal oxides. thermistors are used in many...
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