Process Control Instrumentation TechnologyFor Sophomore/Junior-level courses in Automatic Control Systems, Process Controls, and Instrumentation and Measurement. This text is designed to provide students 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 students to design the elements of a control system from a practical, working perspective, and comprehend how these elements affect overall system operation and tuning. |
Contents
INTRODUCTION TO PROCESS CONTROL | 1 |
ANALOG SIGNAL CONDITIONING | 47 |
DIGITAL SIGNAL CONDITIONING | 109 |
Copyright | |
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accelerometer actual amp circuit amplifier analog application binary number Bode plot bridge circuit capacitor cell constant control system controlled variable controller modes controller output converter conveyor defined detector device differential amplifier electronic energy Equation error EXAMPLE filter final control element flow rate flowchart frequency gauge given heater impedance input voltage instrumentation amplifier integral ladder diagram linear liquid load maximum measurement motor offset op amp operation output voltage phase pneumatic pressure Problem process-control loop programmable logic controller 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 tion transducer transfer function TRIAC typical V₁ valve varies versus Vout wavelength zero ΚΩ