{"id":350,"count":12,"description":"<strong>Capacitive sensor: what it is and how it works<\/strong>\n<strong> <\/strong>\n\nA <strong>capacitive sensor<\/strong> is a sensor that <strong>is named after<\/strong> the variation it measures: <strong>electrical capacitance<\/strong>. <strong>Through this<\/strong>, the capacitive sensor is able to <strong>detect an object<\/strong>.\n\nDiscover also <a href=\"https:\/\/sensorline.biz\/sensore-induttivo\/\" target=\"_blank\" rel=\"noopener\">inductive<\/a> and <a href=\"https:\/\/sensorline.biz\/sensore-ultrasuoni\/\" target=\"_blank\" rel=\"noopener\">ultrasonic<\/a> sensors.\n<strong>Capacitive sensor: what it is and what it is used for <\/strong>\nA capacitive sensor is a device that <strong>uses electrical capacitance<\/strong> to <strong>detect<\/strong> and <strong>measure<\/strong> <strong>objects or fluids<\/strong>.\n\nElectrical capacitance refers to the <strong>ability of a conductor<\/strong> to <strong>accumulate<\/strong> <strong>electrical charge on its outer surface<\/strong> at a given potential; it depends exclusively on the dimensions of the conductor.\n\nThe capacitive sensor <strong>consists of<\/strong> a <strong>capacitor<\/strong> with one of the plates being movable. When an object or fluid approaches the movable plate, the capacitance of the capacitor changes. This <strong>variation in capacitance<\/strong> can be <strong>measured and used<\/strong> <strong>to<\/strong> determine the <strong>position<\/strong>, <strong>size<\/strong>, or <strong>composition<\/strong> <strong>of the object<\/strong> or <strong>fluid<\/strong>.  \n\nThe capacitive sensor finds many <strong>applications in industrial automation systems<\/strong>: from position detection to the non-invasive analysis of object composition.\n<strong>Capacitive sensor: how it works <\/strong>\n<strong> <\/strong>\n\nA capacitive sensor is a <strong>device that detects the presence<\/strong>, <strong>absence<\/strong>, or <strong>distance<\/strong> <strong>of an object or fluid<\/strong>. It consists of two armatures, or plates, charged with opposite signs. The plates are separated by a dielectric material, which prevents them from coming into direct contact.  \n\nIn a capacitive sensor, one of the plates is fixed, while the other is movable. When an <strong>object<\/strong> or <strong>fluid<\/strong> <strong>approaches the movable plate<\/strong>, the <strong>capacitance of the capacitor changes<\/strong>. This variation in capacitance can be measured and <strong>used to determine the position<\/strong>, <strong>size<\/strong>, or <strong>composition<\/strong> of the object or fluid.  \n\nThe use of a capacitive sensor has several advantages compared to other types of sensors. For example: \n\n \tthey are able to <strong>detect non-ferromagnetic<\/strong> and <strong>non-conductive objects<\/strong>;\n \tthey are <strong>independent of the conductivity<\/strong> <strong>of the object<\/strong> or <strong>fluid<\/strong>;\n \tthey are able to <strong>detect objects<\/strong> even at <strong>close range<\/strong>.\n\n<strong>Capacitive sensor: the main types<\/strong>\n<strong> <\/strong>\n\n<strong>Capacitive sensors<\/strong> can be of different types; depending on their use, <strong>they can be classified into<\/strong>:\n\n \t<strong>capacitive proximity sensor<\/strong>: detects the presence, absence, or distance of a target object in very small areas;\n \t<strong>capacitive level sensor<\/strong>: detects the fill level of liquids in containers;\n \t<strong>inclinometers<\/strong>: measure the tilt angle of an object or surface relative to gravity;\n \t<strong>capacitive pressure sensor<\/strong>: utilizes pressure in a cavity and a diaphragm element. The pressure applied to the diaphragm changes its shape, reducing its electrical capacitance; \n \t<strong>capacitive systems<\/strong>: connect multiple capacitive sensors together.\n\nThe capacitive sensor is <strong>used in a wide range<\/strong> <strong>of sectors<\/strong>. Among the main ones are: the wood, paper, glass, plastic, food, chemical, and mechanical industries. ","link":"https:\/\/sensorline.biz\/en\/capacitive-sensor\/","name":"Capacitive Sensor","slug":"capacitive-sensor","taxonomy":"category","parent":0,"meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/sensorline.biz\/en\/wp-json\/wp\/v2\/categories\/350","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sensorline.biz\/en\/wp-json\/wp\/v2\/categories"}],"about":[{"href":"https:\/\/sensorline.biz\/en\/wp-json\/wp\/v2\/taxonomies\/category"}],"wp:post_type":[{"href":"https:\/\/sensorline.biz\/en\/wp-json\/wp\/v2\/posts?categories=350"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}