Process Control Instrumentation Technology This manual is designed to provide users with an understanding and appreciation of some of the theoretical concepts behind control system elements and operations, without the need of advanced math and theory. It also presents some of the practical details of how elements of a control system are designed and operated, such as would be gained from on-the-job experience. This middle ground of knowledge enables users to design the elements of a control system from a practical, working perspective, and comprehend how these elements affect overall system operation and tuning. This edition includes treatment of modern fieldbus approaches to networked and distributed control systems. Generally, this guidebook provides an introduction to process control, and covers analog and digital signal conditioning, thermal, mechanical and optical sensors, final control, discrete-state process control, controller principles, analog controllers, digital control and control loop characteristics. For those working in measurement and instrumentation and with control systems and PLCs. |
Contents
INTRODUCTION TO PROCESS CONTROL | 1 |
ANALOG SIGNAL CONDITIONING | 53 |
DIGITAL SIGNAL CONDITIONING | 115 |
Copyright | |
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Other editions - View all
Process Control Instrumentation Technology: Pearson New International Edition Curtis D. Johnson No preview available - 2013 |
Common terms and phrases
accelerometer actual amp circuit amplifier analog application binary number Bode plot bridge bridge circuit capacitor cell constant control system controlled variable controller modes controller output converter conveyor curve defined detector device differential amplifier electronic energy Equation error EXAMPLE filter final control element flow rate frequency gauge given heater impedance implemented input voltage instrumentation amplifier integral ladder diagram linear liquid load maximum measurement motor offset op amp operation output voltage pneumatic pressure Problem process-control loop programmable logic controllers R₁ R₂ radiation range reference relay resistance resistor response sample setpoint shown in Figure shows signal conditioning Solution specific speed strain strain gauge switch temperature thermal thermistor thermocouple timer tion transfer function TRIAC typical V₁ valve varies versus Vout wavelength zero ΚΩ