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Industrial Process Control System Sensors

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Industrial Process Control System Sensors

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Questions and Answers

What are the two main types of transducers based on their functionality?

Input transducers (sensors) and output transducers (actuators)

What is the essential function of input transducers in an industrial process control system?

To sense the system conditions and convert them to representative electrical signals

What is the purpose of output adjustments in an electronic process control system?

To electronically adjust the output actuators based on the information acquired

Why is it necessary to convert non-electrical process variables to electrical signals in a control system?

To make decisions and modify the controlled process based on the present conditions within the system Signup and view all the answers

What are some examples of non-electrical process variables mentioned in the text?

Temperature, light intensity, and position Signup and view all the answers

What kind of changes are made in the controlled process based on the information acquired by an electronic process control system?

Appropriate changes by electronically adjusting the output actuators Signup and view all the answers

What is the role of an input transducer?

Detect and measure a specific input and convert it into electrical signals for further analysis. Signup and view all the answers

Give an example of an output transducer's function.

Generating mechanical motion, heat, or light as a non-electrical output. Signup and view all the answers

How do output transducers function bidirectionally?

They can act as input and output devices depending on the application. Signup and view all the answers

What is the difference between a sensor and a transducer?

A sensor detects and responds to a specific input, while a transducer converts one form of energy into another. Signup and view all the answers

Provide an example of an active transducer.

Thermocouples Signup and view all the answers

What is the defining characteristic of passive transducers?

They require an external power source for their operation. Signup and view all the answers

Give an example of a passive transducer.

LVDT (Linear Variable Differential Transformer) Signup and view all the answers

What is the primary function of a primary transducer?

To be directly exposed to the process variable to be measured and produce an equivalent function. Signup and view all the answers

What does a conditioning circuit do in a transducer system?

It modifies, filters, or attenuates the signal to be easily acceptable by the output devices. Signup and view all the answers

What is the purpose of a photo voltaic cell?

To act as an active transducer by producing its own equivalent electrical output in response to light intensity. Signup and view all the answers