{"id":9735,"date":"2023-11-02T05:02:40","date_gmt":"2023-11-02T05:02:40","guid":{"rendered":"https:\/\/volleyballvnl.com\/?p=9735"},"modified":"2023-11-02T05:02:40","modified_gmt":"2023-11-02T05:02:40","slug":"electrical-circuit-for-pressure-sensors-when-is-really-a-sensor-active-so-when-passive","status":"publish","type":"post","link":"https:\/\/volleyballvnl.com\/?p=9735","title":{"rendered":"Electrical circuit for pressure sensors: when is really a sensor active, so when passive?"},"content":{"rendered":"\n<p>When using  <a href=\"http:\/\/gourmetgatheringspro.xyz\">\u0e40\u0e01\u0e08\u0e27\u0e31\u0e14\u0e41\u0e23\u0e07\u0e14\u0e31\u0e19\u0e19\u0e49\u0e33\u0e44\u0e17\u0e27\u0e31\u0e2a\u0e14\u0e38<\/a> , the output signals 0 ? 20 mA, 4 ? 20 mA and DC 0 ? 10 V are generally chosen in order for the sensor signals to be evaluated and further processed. Because of this, the signal output of the pressure sensor is normally linked to a corresponding input card in the PLC.<br\/>In this context it could often be confusing, as the day-to-day usage of the terms ?active?, ?passive?, ?current source?, ?voltage source?, ?current sink? and ?load? tend to be wildly mixed together. Any electrical signal processing always takes a voltage supply (an ?active part?) and a ?load?, such as a pressure sensor, which represents the ?passive part?. Sometimes the active portion of the interconnection is also referred to as a power source\/voltage source and the passive part is referred to as a ?current sink?. In order that a power circuit can function, current must flow in a circuit ? even though an instrument is usually known as a load, the current is not consumed because of it, rather it only flows from the existing or voltage source through the strain and back to the current source.<br\/>This works only if an ?energy gap? exists between current source and current sink, so the power source operates actively (= sending out current) and the existing sink passively (= current flows through it) . Therefore, an interconnection of two current sources or two current sinks won&#8217;t operate normally. This situation is complicated in day-to-day application:<br\/>When does a pressure sensor work passively (current sink) and when does it work actively (current source)?<br\/>How does the input card in my own PLC operate?<br\/>Generally of thumb, you can understand that 2-wire sensors usually work passively and therefore need a dynamic PLC input card. It really is difficult with 4-wire sensors, since, for example, a 4-wire flow sensor includes 2 wires for another voltage supply and 2 wires for a dynamic or passive 0\/4 ? 20 mA signal output. Hence, it is vital to check the datasheets for the sensor and PLC input card used.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>When using \u0e40\u0e01\u0e08\u0e27\u0e31\u0e14\u0e41\u0e23\u0e07\u0e14\u0e31\u0e19\u0e19\u0e49\u0e33\u0e44\u0e17\u0e27\u0e31\u0e2a\u0e14\u0e38 , the output signals 0 ? 20 mA, 4 ? 20 mA and DC 0 ? 10 V are generally chosen in order for the sensor signals to be evaluated and further processed. Because of this, the signal output of the pressure sensor is normally linked to a corresponding input card in [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-9735","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/volleyballvnl.com\/index.php?rest_route=\/wp\/v2\/posts\/9735","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/volleyballvnl.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/volleyballvnl.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/volleyballvnl.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/volleyballvnl.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9735"}],"version-history":[{"count":1,"href":"https:\/\/volleyballvnl.com\/index.php?rest_route=\/wp\/v2\/posts\/9735\/revisions"}],"predecessor-version":[{"id":9736,"href":"https:\/\/volleyballvnl.com\/index.php?rest_route=\/wp\/v2\/posts\/9735\/revisions\/9736"}],"wp:attachment":[{"href":"https:\/\/volleyballvnl.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9735"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/volleyballvnl.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9735"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/volleyballvnl.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9735"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}