Transducer Performance The operation of a transducer within a control system can be described in terms of its static performance and its dynamic performance. The static characteristics of greatest interest are ✁ Scale factor (or sensitivity) ✁ Accuracy, uncertainty, precision, and system error (or bias) ✁ Threshold, resolution, dead band, and hysteresis ✁ Linearity ✁ […]
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Control and Instrumentation Technology
Process Transducers , Fluid Flow Transducers (Flowmeters) , Liquid Level Transducers and Temperature Transducers .
18.1.1 Process Transducers This section discusses transducers used in measuring and controlling the process variables most frequently encountered in industrial processes, namely ✁ Fluid pressure ✁ Fluid flow ✁ Liquid level ✁ Temperature Fluid Pressure Transducers Most fluid pressure transducers are of the elastic type, in which the fluid is confined in a chamber with […]
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Measurement Techniques: Sensors and Transducers , Introduction , Motion and Force Transducers , Displacement (Position) Transducers , Velocity Transducers and Acceleration Transducers
18.1 Measurement Techniques: Sensors and Transducers 18.1.1 Introduction An automatic control system is said to be error actuated because the forward path components (comparator, controller, actuator, and plant or process) respond to the error signal (Fig. 18.1). The error signal is developed by comparing the measured value of the controlled output to some reference input, […]
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