UNIT 10 INTRODUCTION TO TRANSDUCERS Transducers and Sensors AND SENSORS Structure 10.1 Introduction Objectives 10.2 Active and Passive Sensors 10.3 Basic Requirements of a Sensor/Transducer 10.4 Discrete Event Sensors 10.4.1 Mechanical Limit Switches 10.4.2 Proximity Limit Sensors 10.4.3 Photoelectric Sensors 10.4.4 Fluid Flow Switch Definitions: Transducer and sensors • Transducer – a device that converts a primary form of energy in to a corresponding signal with a different energy form Primary Energy Forms: mechanical, thermal, electromagnetic, optical, chemical, etc. Definition and General Concept of Transducer Definition The transducer is a device which converts one form of energy into another form. Sumit Thakur Mechanical Transducer Seminar and PPT with PDF Report: In the direct method any physical quantity like duration, mass, etc are calculated directly by some instruments like the measuring tape, weighing scale etc. The main function of a second transducer is used to change the signal from mechanical to electrical. Examples: Mechanical transducer and Electrical transducer Electrical Transducer This page contains Transducer Seminar and PPT with PDF report. 2. • Sensor (e.g., thermometer) - is a … TRANSDUCERS Transducers as already defined , is a device that converts a non electrical quantity into an electrical quantity. The effect of friction is minimized. Transducers Prof. B. D. Kanani, EE Department Electrical Measurements and Measuring Instruments (2130903) 1 5.1. (examples to follow) • Used to change information into a form that can be easily transferred, stored, processed, interpreted, etc. mechanical motion of a pointer. Electrical amplification and attenuation can be done easily and that to with a static device. Advantages of Capacitor Transducers 3. attainable are not as high as in mechanical transducers. For example : a thermocouple , photo conductive cell pressure gauge , … TRANSDUCERS • A transducer is a device that converts energy from one form to another • Energy forms can be mechanical, visual, aural, electrical, thermal, chemical, etc. Capacitive Transducers 2. 5. Capacitive transducers (source: directindustry.com) Capacitive Transducers Contents hide 1. 3. Introduction • Ultrasonic machining is a mechanical type non-traditional machining process employed to machine hard and brittle materials (both electrically conductive and non conductive material) using an axially oscillating tool at ultrasonic frequencies [18–25 kilohertz (kHz)]. Disadvantages of Capacitor Transducers 4. PowerPoint slide on Digital Transducers compiled by Jandeep. 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