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Page: Sensors & Transducers
Capacitive Transducers
Introduction Capacitive transducers are passive transducers that determine the quantities like displacement, pressure, temperature etc. by measuring the variation in the capacitance of a capacitor. For circular plate capacitor Therefore we can write From above equation it is found that, capacitance can be varied with _{ε_0,\ A,\ d,\ θ} So, capacitive transducers ca be used as displacement […]
Sensors and Transducers
‘Sensor‘ is a device that detects a change in a physical stimulus and turns it into a signal which can be measured or recorded. The term sensor is used for an element which generates a signal which is proportional to the quantity being measured. Examples: Diaphragm, RTD, Thermistor, Thermocouple, etc.
What is the structure of a measurement systems?
Sensing element This is an element that is stimulated while in contact with the process and produces an output depending in some way on the measured quantity. Signal conversion/manipulation/conditioning unit The output signal of the primary sensing element is some physical variable, such as displacement or voltage. To enable the instrument to perform the desired […]
What is Measurement?
Measurement is a process of gathering information from a physical world and comparing this information with agreed standards. Other ways it can be stated as the quantitative representation of information. What are information? Information variables which are commonly generated by processes: It can be referred that the information variable is a measured variable. Types of […]
Engineering
Engineering is the art of applying scientific discoveries to meet human needs. Engineers make inventions intended to increase our productivity