{"id":710,"date":"2017-03-16T13:20:37","date_gmt":"2017-03-16T11:20:37","guid":{"rendered":"http:\/\/www.inst-sim.com\/1\/?p=710"},"modified":"2017-03-17T16:28:40","modified_gmt":"2017-03-17T14:28:40","slug":"inductive_level_sensors","status":"publish","type":"post","link":"https:\/\/www.inst-sim.com\/1\/level\/inductive_level_sensors\/","title":{"rendered":"\u062d\u0633\u0627\u0633\u0627\u062a \u0627\u0644\u0645\u0646\u0633\u0648\u0628 \u0627\u0644\u062d\u062b\u064a\u0629 Inductive Level Sensors"},"content":{"rendered":"

\u0645\u0642\u062f\u0645\u0629<\/span><\/h3>\n

 <\/p>\n\n\n\n
\n

\u062d\u0633\u0627\u0633\u0627\u062a \u0627\u0644\u062a\u0642\u0627\u0631\u0628 \u0627\u0644\u062d\u062b\u064a\u0629 Inductive Proximity Sensors<\/span> \u0647\u064a \u062d\u0633\u0627\u0633\u0627\u062a \u062a\u0642\u0627\u0631\u0628 \u0644\u0627 \u062a\u0644\u0627\u0645\u0633\u064a\u0629 Non-Contact<\/span> (\u0644\u0627 \u062a\u062a\u0644\u0627\u0645\u0633 \u0645\u0639 \u0627\u0644\u062c\u0633\u0645 \u0627\u0644\u0630\u064a \u064a\u062a\u0645 \u0645\u0644\u0627\u062d\u0638\u062a\u0647) \u0648\u0647\u064a \u062a\u0633\u062a\u062e\u062f\u0645 \u0645\u062c\u0627\u0644 \u0643\u0647\u0631\u0648\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u064a \u0645\u062a\u0631\u062f\u062f \u0646\u0627\u062a\u062c \u0639\u0646 \u0645\u0630\u0628\u0630\u0628 Oscillator<\/span> \u0648\u0645\u0644\u0641 Coil<\/span> . \u0648\u062c\u0648\u062f \u062c\u0633\u0645 \u0623\u0645\u0627\u0645 \u0627\u0644\u0645\u0644\u0641 \u064a\u063a\u064a\u064a\u0631 \u0647\u0630\u0627 \u0627\u0644\u0645\u062c\u0627\u0644 \u0627\u0644\u0643\u0647\u0631\u0648\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u064a \u0648\u0628\u0627\u0644\u062a\u0627\u0644\u064a \u064a\u0643\u0648\u0646 \u0627\u0644\u062d\u0633\u0627\u0633 \u0642\u0627\u062f\u0631\u0627\u064b \u0639\u0644\u064a \u0643\u0634\u0641 \u0647\u0630\u0627 \u0627\u0644\u062a\u063a\u064a\u064a\u0631 . \u0648\u064a\u0645\u0643\u0646 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0647\u0630\u0627 \u0627\u0644\u0646\u0648\u0639 \u0645\u0646 \u0627\u0644\u062d\u0633\u0627\u0633\u0627\u062a \u0641\u064a \u0643\u0634\u0641 \u0627\u0644\u0645\u0648\u0642\u0639 Position<\/span> \u0623\u0648 \u0627\u0644\u0625\u0642\u0631\u0627\u0628 Proximity<\/span> \u0623\u0648 \u0627\u0644\u0625\u0632\u0627\u062d\u0629 Displacement<\/span> .<\/p>\n

\u0643\u0630\u0644\u0643 \u064a\u0645\u0643\u0646\u00a0 \u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0647 \u0644\u0642\u064a\u0627\u0633 \u0645\u0646\u0633\u0648\u0628 \u0633\u0627\u0626\u0644 Liquid Level<\/span> \u0641\u064a \u062d\u0627\u0644\u0629 \u0627\u0644\u0633\u0648\u0627\u0626\u0644 \u0627\u0644\u0645\u0639\u062f\u0646\u064a\u0629 \u0623\u0648 \u0627\u0644\u0645\u0648\u0635\u0644\u0629 \u0643\u0647\u0631\u0628\u064a\u0627\u064b .<\/p>\n

\u062a\u0648\u0627\u062c\u0647 \u0627\u0644\u062d\u0633\u0627\u0633\u0627\u062a \u0627\u0644\u062d\u062b\u064a\u0629 \u0639\u064a\u0628 \u0648\u0627\u062d\u062f \u0643\u0628\u064a\u0631 \u0623\u0644\u0627 \u0648\u0647\u0648 \u0623\u0646\u0647\u0627 \u0642\u0627\u062f\u0631\u0629 \u0639\u0644\u064a \u0627\u0644\u0639\u0645\u0644 \u0641\u0642\u0637 \u0645\u0639 \u0627\u0644\u0623\u0647\u062f\u0627\u0641 \u0627\u0644\u0645\u0639\u062f\u0646\u064a\u0629 Metallic Targets<\/span> .<\/p>\n<\/td>\n

\n

Inductive proximity sensors are non-contact proximity devices that set up a radio frequency field with an oscillator and a coil. The presence of an object alters this field and the sensor is able to detect this alteration. These sensors are basically employed as proximity, position and displacement indicators.<\/p>\n

\u00a0Also measurement of liquid level in case of metals or other electro-conductive fluids<\/p>\n

One major drawback faced by inductive sensors is that they are capable of working with only metallic targets.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

<\/p>\n

\u0634\u0643\u0644 \u0631\u0642\u0645 (1) : \u0645\u062d\u0627\u0643\u0627\u0629 \u0645\u062a\u062d\u0631\u0643\u0629 \u062a\u0648\u0636\u062d \u0623\u062d\u062f \u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0627\u0629 \u062d\u0633\u0627\u0633 \u0627\u0644\u062a\u0642\u0627\u0631\u0628 \u0627\u0644\u062d\u062b\u064a Inductive Proximity Sensor <\/span><\/p>\n

 <\/p>\n\n\n\n
\n

\u062d\u0633\u0627\u0633\u0627\u062a \u0627\u0644\u0645\u0646\u0633\u0648\u0628 \u0627\u0644\u062d\u062b\u064a\u0629 Inductive-Level Transducer<\/span> \u0648\u062c\u062f\u062a \u0637\u0631\u064a\u0642\u0627 \u0644\u0647\u0627 \u0641\u064a \u0642\u064a\u0627\u0633 \u0645\u0646\u0633\u0648\u0628 \u0627\u0644\u0633\u0648\u0627\u0626\u0644 \u0627\u0644\u0645\u0639\u062f\u0646\u064a\u0629 \u0623\u0648 \u0627\u0644\u0645\u0648\u0635\u0644\u0629 \u0643\u0647\u0631\u0628\u064a\u0627\u064b Electroconductive Liquids<\/span> , \u0641\u0641\u064a \u0623\u062d\u062f \u0627\u0644\u062a\u0635\u0645\u064a\u0645\u0627\u062a \u064a\u062a\u0645 \u0644\u0641 \u0627\u0644\u0645\u0644\u0641 \u0627\u0644\u0643\u0647\u0631\u0628\u064a \u062d\u0648\u0644 \u0623\u0646\u0628\u0648\u0628 \u064a\u062d\u062a\u0648\u064a \u0639\u0644\u064a \u0627\u0644\u0633\u0627\u0626\u0644 . \u064a\u062a\u063a\u064a\u0631 \u062d\u062b \u0627\u0644\u0645\u0644\u0641 Inductance<\/span> \u0628\u0633\u0631\u0639\u0629 \u0639\u0646\u062f \u062a\u062d\u0631\u0643 \u0627\u0644\u0633\u0627\u0626\u0644 \u0648\u0627\u0642\u062a\u0631\u0627\u0628\u0647 \u0645\u0646 \u0627\u0644\u0645\u0644\u0641 .<\/p>\n<\/td>\n

\n

An inductive-level transducer finds its application in the measurement of the level of liquid metals and other electroconductive liquids. In one of the designs, a coil is wound around a tube containing the liquid. The inductance of this coil changes rapidly as the liquid moves and approaches the coil.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

<\/p>\n

\u0634\u0643\u0644 \u0631\u0642\u0645 (2) : \u062d\u0633\u0627\u0633 \u0627\u0644\u0645\u0646\u0633\u0648\u0628 \u0645\u062a\u063a\u064a\u0631 \u0627\u0644\u062d\u062b Variable-inductance level transducer<\/span><\/p>\n

 <\/p>\n

<\/p>\n

\u0634\u0643\u0644 \u0631\u0642\u0645 (3) : \u0645\u062d\u0627\u0643\u0627\u0629 \u0645\u062a\u062d\u0631\u0643\u0629 \u0644\u062d\u0633\u0627\u0633 \u0627\u0644\u0645\u0646\u0633\u0648\u0628 \u0645\u062a\u063a\u064a\u0631 \u0627\u0644\u062d\u062b Variable-inductance level transducer <\/span><\/p>\n

 <\/p>\n\n\n\n
\n

\u0648\u0641\u064a \u062a\u0635\u0645\u064a\u0645 \u0622\u062e\u0631 \u060c \u064a\u062a\u0645 \u062a\u0643\u0648\u064a\u0646 \u0645\u062d\u0648\u0644 \u0643\u0647\u0631\u0628\u064a Transformer<\/span> \u0645\u0646 \u0645\u0644\u0641 \u0627\u0628\u062a\u062f\u0627\u0626\u064a \u0645\u0644\u0641\u0648\u0641 \u0639\u0644\u064a \u0623\u062d\u062f\u064a \u062c\u0627\u0646\u0628\u064a \u0642\u0644\u0628 \u0645\u0639\u062f\u0646\u064a . \u064a\u062a\u0645 \u0648\u0636\u0639 \u0627\u0644\u0637\u0631\u0641 \u0627\u0644\u0622\u062e\u0631 \u062f\u0627\u062e\u0644 \u0623\u0646\u0628\u0648\u0628 \u064a\u062d\u062a\u0648\u064a \u0639\u0644\u064a \u0627\u0644\u0633\u0627\u0626\u0644 \u0648\u062a\u0645\u062b\u0644 \u0644\u0641\u0629 \u0648\u0627\u062d\u062f\u0629 \u0645\u0646 \u0627\u0644\u0645\u0644\u0641 \u0627\u0644\u062b\u0627\u0646\u0648\u064a .<\/p>\n

\u0627\u0644\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0641\u0639\u0627\u0644\u0629 Effective Resistance<\/span> \u0644\u0647\u0630\u0647 \u0627\u0644\u0644\u0641\u0629 \u0627\u0644\u0648\u0627\u062d\u062f\u0629 \u062a\u062a\u0646\u0627\u0633\u0628 \u0639\u0643\u0633\u064a\u0627\u064b \u0645\u0639 \u0627\u0631\u062a\u0641\u0627\u0639 \u0639\u0645\u0648\u062f \u0627\u0644\u0633\u0627\u0626\u0644 \u062f\u0627\u062e\u0644 \u0627\u0644\u0623\u0646\u0628\u0648\u0628 . \u0648\u064a\u0645\u0643\u0646 \u0642\u064a\u0627\u0633 \u0627\u0644\u062a\u063a\u064a\u0631 \u0641\u064a \u0627\u0631\u062a\u0641\u0627\u0639 \u0627\u0644\u0633\u0627\u0626\u0644 \u0628\u0642\u064a\u0627\u0633 \u0627\u0633\u062a\u0647\u0644\u0627\u0643 \u0627\u0644\u0637\u0627\u0642\u0629 \u0641\u064a \u0627\u0644\u0645\u0644\u0641 \u0627\u0644\u0625\u0628\u062a\u062f\u0627\u0626\u064a .<\/p>\n<\/td>\n

\n

In another design, the transducer is introduced by a transformer with a primary coil wound on one limb of a twin-limbed iron core. The other limb is enclosed by a tube containing the liquid and forming one turn of the secondary winding. The effective resistance of this turn is inversely proportional to the height of the liquid column in the tube. The change in the height can be sensed by measuring the power consumption at the primary coil.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

<\/p>\n

\u0634\u0643\u0644 \u0631\u0642\u0645 (4) : \u062d\u0633\u0627\u0633 \u0627\u0644\u0645\u0646\u0633\u0648\u0628 \u0630\u0648 \u0645\u062d\u0648\u0644 \u0627\u0644\u062d\u062b Transformer-Type Level Transducer<\/span><\/p>\n

 <\/p>\n

<\/p>\n

\u0634\u0643\u0644 \u0631\u0642\u0645 (5) : \u0645\u062d\u0627\u0643\u0627\u0629 \u0645\u062a\u062d\u0631\u0643\u0629 \u0644\u062d\u0633\u0627\u0633 \u0627\u0644\u0645\u0646\u0633\u0648\u0628 \u0630\u0648 \u0645\u062d\u0648\u0644 \u0627\u0644\u062d\u062b Transformer-Type Level Transducer
\n<\/span><\/p>\n

 <\/p>\n

\u0627\u0643\u062a\u0645\u0644 \u0627\u0644\u0645\u0648\u0636\u0648\u0639 …..<\/strong><\/p>\n

 <\/p>\n

\u062a\u0627\u0628\u0639 \u0635\u0641\u062d\u062a\u0646\u0627 \u0639\u0644\u064a \u0627\u0644\u0641\u064a\u0633 \u0628\u0648\u0643<\/span> \"\"<\/a><\/p>\n

 <\/p>\n

\u0645\u0635\u0627\u062f\u0631 \u0627\u0644\u0635\u0648\u0631<\/span><\/h3>\n\n\n\n
\u0634\u0643\u0644 \u0631\u0642\u0645 (1)<\/td>\nhttp:\/\/www.proximon.com\/images\/anni13.gif<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\u0627\u0644\u0645\u0631\u0627\u062c\u0639<\/span><\/h3>\n\n\n\n\n
1<\/td>\nhttp:\/\/automationwiki.com\/index.php\/Inductive_Level_Sensors<\/td>\n<\/tr>\n
2<\/td>\nhttp:\/\/sswahyudi.blogspot.com.eg\/2010\/02\/types-of-level-sensors.html<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\"handwave-yellow\"<\/p>\n

\u0645\u0648\u0627\u0636\u064a\u0639 \u0630\u0627\u062a \u0635\u0644\u0629<\/strong><\/span><\/h3>\n