{"id":9752,"date":"2026-10-18T15:44:06","date_gmt":"2026-10-18T06:44:06","guid":{"rendered":"https:\/\/now0930.pe.kr\/wordpress\/?p=9752"},"modified":"2026-10-18T15:48:13","modified_gmt":"2026-10-18T06:48:13","slug":"lessons-in-industrial-instrumentation-chapter-21","status":"publish","type":"post","link":"https:\/\/now0930.pe.kr\/wordpress\/lessons-in-industrial-instrumentation-chapter-21\/","title":{"rendered":"Lessons In Industrial Instrumentation, Chapter 21"},"content":{"rendered":"\n<style>\n.chapter19-wide{max-width:1480px;width:calc(100% - 28px);margin:0 auto;padding:32px 42px;box-sizing:border-box;font-family:\"Noto Sans KR\",\"Malgun Gothic\",sans-serif;color:#1b2936;font-size:20px;line-height:1.85;background:#fff}\n.chapter19-wide h1{font-size:35px;line-height:1.35;border-bottom:3px solid #246e86;padding-bottom:12px}\n.chapter19-wide .subtitle{font-size:19px;color:#557180;margin:12px 0 25px}\n.chapter19-wide h2{font-size:27px;margin:40px 0 20px;border-left:6px solid #267c96;padding-left:16px}\n.chapter19-wide h3{font-size:22px;margin:24px 0 8px;color:#13536e}\n.chapter19-wide p{margin:8px 0 18px}.chapter19-wide .section{padding-bottom:12px;border-bottom:1px solid #d6e2e8}\n.chapter19-wide .review{background:#f4f8fa;border:1px solid #d3e2e8;padding:22px 28px;border-radius:8px}\n.chapter19-wide .eq{display:block;width:fit-content;max-width:100%;margin:14px auto;padding:12px 20px;text-align:center;background:#f5f9fb;border-left:4px solid #267c96;border-radius:4px;font-family:Georgia,\"Times New Roman\",serif;font-size:1.14em;line-height:1.6;overflow-x:auto;box-sizing:border-box;white-space:nowrap}\n.chapter19-wide .math-inline{font-family:Georgia,\"Times New Roman\",serif;white-space:nowrap;font-size:1.06em}\n.chapter19-wide .frac{display:inline-flex;vertical-align:middle;flex-direction:column;text-align:center;line-height:1.2;margin:0 .16em;font-size:.94em}\n.chapter19-wide .frac .num{border-bottom:1.3px solid currentColor;padding:0 .3em .12em}\n.chapter19-wide .frac .den{padding:.12em .3em 0}\n.chapter19-wide .eq sub,.chapter19-wide .eq sup,.chapter19-wide .math-inline sub,.chapter19-wide .math-inline sup{font-size:.68em}\n.chapter19-wide li{margin:10px 0}.chapter19-wide .source{font-size:16px;color:#65727b}\n@media(max-width:720px){.chapter19-wide{width:100%;padding:16px;font-size:17px}.chapter19-wide h1{font-size:28px}.chapter19-wide h2{font-size:23px}}\n<\/style>\n<div class=\"chapter19-wide\">\n<h1>Chapter 21. Continuous Temperature Measurement \u2014 \uc5f0\uc18d \uc628\ub3c4 \uce21\uc815<\/h1>\n<div class=\"subtitle\">\ud544\uae30 5\ud398\uc774\uc9c0 \uae30\ubc18 \u00b7 \uc628\ub3c4\uc640 \uc5f4\uc5d0\ub108\uc9c0 \u2192 \ubc14\uc774\uba54\ud0c8 \u2192 \ucda9\uc804\uc2dd \ubc8c\ube0c \u2192 \uc11c\ubbf8\uc2a4\ud130\u00b7RTD \u2192 \uc5f4\uc804\ub300\u00b7\uace0\uc7a5 \uac80\ucd9c<\/div>\n<p class=\"source\">\ucd9c\ucc98: Scan_20261018_152745.pdf (5\ud398\uc774\uc9c0) \ubc0f \uc0ac\uc6a9\uc790 \uc81c\uacf5 \uc804\uc0ac\ubcf8. \uc218\uc2dd\u00b7\uac1c\ub150 \uad50\uc815\uc740 \ub9e8 \uc544\ub798\uc5d0 \ubcc4\ub3c4 \ud45c\uc2dc\ud568.<\/p>\n<section class=\"section\">\n<h2>21\uc7a5 \ub3c4\uc785 \u2014 \uc628\ub3c4\uc640 \uc5f4\uc5d0\ub108\uc9c0<\/h2>\n<h3>\uc628\ub3c4 (Temperature)<\/h3>\n<p>\ubb3c\uc9c8 \ub0b4\ubd80 \ubd84\uc790\uc758 \ud3c9\uade0 \uc6b4\ub3d9\uc5d0\ub108\uc9c0\uc640 \uad00\uacc4\ub41c\ub2e4. \ub2e8\uc6d0\uc790 \uc774\uc0c1\uae30\uccb4\uc758 \ubcd1\uc9c4 \uc6b4\ub3d9\uc5d0\ub108\uc9c0 \ud3c9\uade0\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<span class=\"eq\">E&#772;<sub>k<\/sub> = <span class=\"frac\"><span class=\"num\">3<\/span><span class=\"den\">2<\/span><\/span> kT<\/span> \uc5ec\uae30\uc5d0\uc11c <span class=\"math-inline\">k<\/span>\ub294 \ubcfc\uce20\ub9cc \uc0c1\uc218, <span class=\"math-inline\">T<\/span>\ub294 \uc808\ub300\uc628\ub3c4\uc774\ub2e4.<\/p>\n<h3>\uc5f4\uc5d0\ub108\uc9c0 (Thermal energy)<\/h3>\n<p>\ubd84\uc790\uc758 \uc6b4\ub3d9\uc5d0\ub108\uc9c0 \ucd1d\ud569\uc73c\ub85c \uc815\ub9ac\ud55c\ub2e4. \ub2e8\uc6d0\uc790 \uc774\uc0c1\uae30\uccb4\uc758 \uacbd\uc6b0 \ub2e4\uc74c\uacfc \uac19\ub2e4.<span class=\"eq\">E<sub>thermal<\/sub> = N E&#772;<sub>k<\/sub> = <span class=\"frac\"><span class=\"num\">3<\/span><span class=\"den\">2<\/span><\/span> NkT<\/span> <span class=\"math-inline\">N<\/span>\uc740 \ubd84\uc790 \uc218\uc774\ub2e4.<\/p>\n<h3>\uc5f4 (Heat)<\/h3>\n<p>\uc2dc\ub8cc \uac04\uc5d0 \uc628\ub3c4 \ucc28\uc774\ub85c \uc804\ub2ec\ub418\ub294 \uc5d0\ub108\uc9c0\uc774\ub2e4. \uc804\ub2ec \ubc29\uc2dd\uc740 \uc804\ub3c4(Conduction), \ub300\ub958(Convection), \ubcf5\uc0ac(Radiation)\uc774\ub2e4.<\/p>\n<h3>\uc628\ub3c4 \uce21\uc815<\/h3>\n<p>\uc628\ub3c4\ub97c \uce21\uc815\ud558\uace0 \ubb3c\uc9c8\uc758 \uc591\uacfc \ud2b9\uc131\uc744 \uc54c\uba74 \uc5f4\uc5d0\ub108\uc9c0\uc758 \ubcc0\ud654\ub97c \ucd94\uc815\ud560 \uc218 \uc788\ub2e4. \ub2e8\uc21c\ud788 \uc628\ub3c4\ub9cc \uce21\uc815\ud558\uc5ec \ubaa8\ub4e0 \ubb3c\uc9c8\uc758 \uc5f4\uc5d0\ub108\uc9c0\uac00 \uacb0\uc815\ub418\ub294 \uac83\uc740 \uc544\ub2c8\ub2e4.<\/p>\n<\/section>\n<section class=\"section\">\n<h2>21.1 \ubc14\uc774\uba54\ud0c8 \uc628\ub3c4 \uc13c\uc11c (Bi-metal Temperature Sensors)<\/h2>\n<h3>\uc5f4\ud33d\ucc3d<\/h3>\n<p><span class=\"eq\">L = L<sub>0<\/sub>(1 + \u03b1\u0394T)<\/span> <span class=\"math-inline\">L<sub>0<\/sub><\/span>\ub294 \ucd08\uae30 \uae38\uc774, <span class=\"math-inline\">\u03b1<\/span>\ub294 \uc120\ud33d\ucc3d\uacc4\uc218, <span class=\"math-inline\">\u0394T<\/span>\ub294 \uc628\ub3c4 \ubcc0\ud654\ub7c9\uc774\ub2e4. \uc120\ud33d\ucc3d\ub7c9\uc740 <span class=\"math-inline\">\u0394L = \u03b1L<sub>0<\/sub>\u0394T<\/span>\uc774\ub2e4.<\/p>\n<h3>\uc65c \ubc14\uc774\uba54\ud0c8\uc778\uac00?<\/h3>\n<p>\uc120\ud33d\ucc3d\uacc4\uc218\uc758 \ucc28\uc774\uac00 \uc788\ub294 \ub450 \uae08\uc18d\uc744 \uc811\ud569\ud558\uba74, \uc11c\ub85c \ub2e4\ub978 \ud33d\ucc3d\ub7c9 \ub54c\ubb38\uc5d0 \uad7d\ud798 \ubcc0\ud615\uc774 \ub098\ud0c0\ub09c\ub2e4. \ubbf8\uc138\ud55c \uae38\uc774 \ucc28\uc774\ub97c \ub05d\ub2e8 \ubcc0\uc704 \ub610\ub294 \uc9c0\uce68 \ud68c\uc804\uc73c\ub85c \uc77d\uae30 \uc26c\uc6cc\uc9c4\ub2e4.<\/p>\n<h3>\ubd80\ub974\ub3d9\uad00\uacfc\uc758 \uc5f0\uacb0<\/h3>\n<p>\ubc14\uc774\uba54\ud0c8\uc740 \uc774\uc885 \uae08\uc18d\uc758 \uc5f4\ud33d\ucc3d \ucc28\uc774\uac00 \uad7d\ud798\uc744 \ub9cc\ub4e4\uace0, \ubd80\ub974\ub3d9\uad00\uc740 \uc555\ub825\uc5d0 \ub530\ub978 \ub2e8\uba74 \ud615\uc0c1 \ubcc0\ud654\uac00 \uace1\ub960 \ubcc0\ud654\ub97c \ub9cc\ub4e0\ub2e4. \ub458 \ub2e4 \uace1\ub960 \ubcc0\ud654\ub85c \ub05d\ub2e8\uc758 \uc6c0\uc9c1\uc784\uc744 \uc5bb\uc9c0\ub9cc, \ubcc0\ud615 \uc6d0\uc778\uc740 \ub2e4\ub974\ub2e4.<\/p>\n<\/section>\n<section class=\"section\">\n<h2>21.2 \ucda9\uc804\uc2dd \ubc8c\ube0c \uc628\ub3c4 \uc13c\uc11c (Filled-bulb Temperature Sensors)<\/h2>\n<h3>\uce21\uc815 \uc6d0\ub9ac<\/h3>\n<p>\uc628\ub3c4\uac00 \uc99d\uac00\ud558\uba74 \ubd09\uc785 \uc720\uccb4\uc758 \uccb4\uc801 \ub610\ub294 \uc555\ub825\uc774 \ubcc0\ud55c\ub2e4. \uc774 \ubcc0\ud654\ub85c \ubca8\ub85c\uc988, \ubd80\ub974\ub3d9\uad00 \ub4f1\uc758 \uc9c0\uc2dc \uae30\uad6c\ub97c \uad6c\ub3d9\ud55c\ub2e4.<\/p>\n<h3>\uc0ac\uc6a9 \ud604\ud669<\/h3>\n<p>\ud544\uae30\uc5d0\uc11c\ub294 \uc804\uae30\uc2dd \uc13c\uc11c\uac00 \ub110\ub9ac \ub300\uccb4\ud558\uc5ec \ud604\uc7ac \uc0ac\uc6a9 \ube48\ub3c4\uac00 \ub0ae\uc544\uc84c\ub2e4\uace0 \uc815\ub9ac\ud55c\ub2e4. \ucda9\uc804\uc2dd \ubc8c\ube0c \ubc29\uc2dd\uc740 \uc804\uc6d0 \uc5c6\uc774 \uae30\uacc4\uc2dd\uc73c\ub85c \uc791\ub3d9\ud560 \uc218 \uc788\ub2e4.<\/p>\n<\/section>\n<section class=\"section\">\n<h2>21.3 \uc11c\ubbf8\uc2a4\ud130\uc640 RTD (Thermistors and RTDs)<\/h2>\n<h3>\uacf5\ud1b5 \uce21\uc815 \uc6d0\ub9ac<\/h3>\n<p>\uc628\ub3c4 \ubcc0\ud654\uc5d0 \ub530\ub978 \uc804\uae30\uc800\ud56d \ubcc0\ud654\ub97c \uce21\uc815\ud55c\ub2e4.<\/p>\n<h3>\uc11c\ubbf8\uc2a4\ud130 (Thermistor)<\/h3>\n<p>\uc628\ub3c4 \uc0c1\uc2b9\uc5d0 \ub530\ub77c \uc800\ud56d\uc774 \uc99d\uac00\ud558\ub294 PTC \ub610\ub294 \uac10\uc18c\ud558\ub294 NTC\uac00 \uc788\ub2e4. \ub192\uc740 \uac10\ub3c4\uc640 \ube44\uc120\ud615\uc131\uc744 \uac00\uc9c4\ub2e4. \ud544\uae30\uc5d0\uc11c\ub294 \uc77c\ubc18 \uc18c\ube44\uc790 \uc81c\ud488\uc758 \uc751\uc6a9\uc744 \uc81c\uc2dc\ud55c\ub2e4.<\/p>\n<h3>RTD (Resistance Temperature Detector)<\/h3>\n<p>\ubc31\uae08(Pt), \uad6c\ub9ac(Cu) \ub4f1 \uae08\uc18d\uc758 \uc800\ud56d\uc774 \uc628\ub3c4 \uc0c1\uc2b9\uc5d0 \ub530\ub77c \uc99d\uac00\ud558\ub294 \uc6d0\ub9ac\ub97c \uc774\uc6a9\ud55c\ub2e4. \ube44\uad50\uc801 \uc120\ud615\uc801\uc774\uba70 \uc0b0\uc5c5\uc6a9 \uc628\ub3c4 \uce21\uc815\uc5d0 \ub110\ub9ac \uc0ac\uc6a9\ub41c\ub2e4.<\/p>\n<h3>\uc800\ud56d\u2013\uc628\ub3c4 \uad00\uacc4<\/h3>\n<p><span class=\"eq\">R<sub>T<\/sub> = R<sub>ref<\/sub>[1 + \u03b1(T \u2212 T<sub>ref<\/sub>)]<\/span> 1\ucc28 \uadfc\uc0ac\uc2dd\uc774\uba70 \ud544\uc694\ud560 \ub54c Callendar\u2013van Dusen \ub2e4\ud56d\uc2dd\uc774\ub098 \uc800\ud56d\u2013\uc628\ub3c4 \ud45c, \ubcf4\uac04\ubc95\uc744 \uc0ac\uc6a9\ud55c\ub2e4.<\/p>\n<h3>\uae30\uc900 \uc800\ud56d<\/h3>\n<p>0\u00b0C\uc5d0\uc11c 100 \u03a9\uc744 \uac16\ub294 Pt100\uc774 \ub300\ud45c\uc801\uc774\ub2e4. 2\uc120\uc2dd\u00b73\uc120\uc2dd\u00b74\uc120\uc2dd \uacb0\uc120\uc758 \uc0c1\uc138 \ub0b4\uc6a9\uc740 \ubcc4\ub3c4 \ubb38\uac74\uc73c\ub85c \ub2e4\ub8ec\ub2e4.<\/p>\n<h3>\uc790\uae30\ubc1c\uc5f4 \uc624\ucc28 (Self-heating error)<\/h3>\n<p>\uc800\ud56d \uce21\uc815\uc5d0 \ud544\uc694\ud55c \uc5ec\uc790 \uc804\ub958\uac00 \ub2e4\uc74c \uc2dd\ub9cc\ud07c<span class=\"eq\">P = I<sup>2<\/sup>R<\/span>\uc758 \uc804\ub825\uc744 \uc18c\ube44\ud558\uc5ec \uc13c\uc11c \uc628\ub3c4\ub97c \ubcc0\ud654\uc2dc\ud0a8\ub2e4. \uc804\ub958\ub97c \uc904\uc774\uac70\ub098 \ud384\uc2a4\ud615\uc73c\ub85c \ud758\ub824 \uc601\ud5a5\uc744 \ub0ae\ucd98\ub2e4. \uc5ec\uc790 \uc804\ub958 \uac10\uc18c\ub294 \uce21\uc815 \uc804\uc555 \ubc0f \uc2e0\ud638 \ub300 \uc7a1\uc74c\ube44(SNR)\uc640 \uc808\ucda9 \uad00\uacc4\uc774\ub2e4.<\/p>\n<\/section>\n<section class=\"section\">\n<h2>21.4 \uc5f4\uc804\ub300 (Thermocouples)<\/h2>\n<h3>RTD\uc640 \uc5f4\uc804\ub300<\/h3>\n<p>RTD\ub294 \uc800\ud56d\uc744 \uc77d\uae30 \uc704\ud55c \uc5ec\uc790 \uc804\ub958\uac00 \ud544\uc694\ud558\ub2e4. \uc5f4\uc804\ub300\ub294 \uc628\ub3c4\ucc28\uc5d0 \uc758\ud574 \uc5f4\uae30\uc804\ub825\uc744 \ubc1c\uc0dd\uc2dc\ud0a4\ubbc0\ub85c \uc13c\uc11c \uc790\uccb4\uc5d0 \uc5ec\uc790 \uc804\ub958\uac00 \ud544\uc694\ud558\uc9c0 \uc54a\ub2e4. \ub2e4\ub9cc \ub0c9\uc811\uc810 \ubcf4\uc0c1\uc73c\ub85c \uce21\uc815 \ud68c\ub85c\ub294 \ubcf5\uc7a1\ud574\uc9c8 \uc218 \uc788\ub2e4.<\/p>\n<h3>\uc774\uc885 \uae08\uc18d \uc811\uc810<\/h3>\n<p>\uce21\uc815 \uc811\uc810 <span class=\"math-inline\">J<sub>1<\/sub><\/span>\uacfc \uae30\uc900 \uc811\uc810 <span class=\"math-inline\">J<sub>2<\/sub><\/span>\uc758 \uc628\ub3c4 \ucc28\uc774\uc5d0 \uc758\ud574 \uce21\uc815 \uc804\uc555\uc774 \uc815\ud574\uc9c4\ub2e4.<span class=\"eq\">V<sub>meter<\/sub> = V<sub>J1<\/sub> \u2212 V<sub>J2<\/sub><\/span> \ud45c\uc900 \uc5f4\uc804\ub300\uc758 \uc804\uc555\u2013\uc628\ub3c4 \uad00\uacc4\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \ube44\uc120\ud615\uc774\ubbc0\ub85c \uc628\ub3c4\ud45c\ub97c \uc774\uc6a9\ud55c\ub2e4.<\/p>\n<h3>\uc5f4\uc804\ub300 \uc720\ud615\uacfc \uad6c\uc870<\/h3>\n<p>\uc720\ud615\uc740 J, K, T, E, N, R, S, B \ub4f1\uc744 \ud3ec\ud568\ud558\uba70 R\u00b7S\u00b7B\ud615\uc740 \ubc31\uae08\uacc4 \ud569\uae08\uc744 \uc4f4\ub2e4. \ucee4\ub125\ud130, \ubcf4\ud638\uad00(Sheath), \ud50c\ub7ec\uadf8\uc640 \uce21\uc815\ub2e8(\ub178\ucd9c\ud615, \uc811\uc9c0\ud615, \ube44\uc811\uc9c0\ud615)\uc73c\ub85c \uad6c\uc131\ub420 \uc218 \uc788\ub2e4.<\/p>\n<h3>\ub0c9\uc811\uc810 \ubcf4\uc0c1 (Reference Junction Compensation)<\/h3>\n<p>\uae30\uc900 \uc811\uc810\uc774 0\u00b0C\ub85c \uc720\uc9c0\ub41c\ub2e4\uba74 \ud45c\uc900 \ud45c\ub97c \uc9c1\uc811 \uc801\uc6a9\ud560 \uc218 \uc788\ub2e4. \uc2e4\uc81c \ud604\uc7a5\uc5d0\uc11c\ub294 \uae30\uc900 \uc811\uc810 \uc628\ub3c4\ub97c \uc11c\ubbf8\uc2a4\ud130 \ub610\ub294 RTD\ub85c \uc77d\uc5b4, \uae30\uc900 \uc811\uc810\uc5d0 \ud574\ub2f9\ud558\ub294 \uc5f4\uc804\uc555\uc744 \ub354\ud574 \ubcf4\uc0c1\ud55c\ub2e4.<span class=\"eq\">V<sub>J1<\/sub> = V<sub>meter<\/sub> + V<sub>J2<\/sub><\/span><\/p>\n<h3>\uc911\uac04 \uae08\uc18d\uc758 \ubc95\uce59<\/h3>\n<p>\uc11c\ub85c \ub2e4\ub978 \uae08\uc18d\uc744 \uc911\uac04\uc5d0 \uc0bd\uc785\ud574\ub3c4 \uc0c8\ub85c \ud615\uc131\ub41c \ub450 \uc811\uc810\uc774 \uac19\uc740 \uc628\ub3c4\ub77c\uba74 \uce21\uc815 \uc5f4\uae30\uc804\ub825\uc758 \uc21c\ud6a8\uacfc\ub294 \ubc14\ub00c\uc9c0 \uc54a\ub294\ub2e4. \uac01 \uc811\uc810\uc5d0\uc11c \ubc1c\uc0dd\ud558\ub294 \uc804\uc555\uc774 \uac1c\ubcc4\uc801\uc73c\ub85c 0\uc774\ub77c\ub294 \ub73b\uc740 \uc544\ub2c8\ub2e4.<\/p>\n<h3>\ud558\ub4dc\uc6e8\uc5b4\u00b7\uc18c\ud504\ud2b8\uc6e8\uc5b4 \ubcf4\uc0c1<\/h3>\n<p>\ud558\ub4dc\uc6e8\uc5b4 \ubcf4\uc0c1\uc740 \uc544\ub0a0\ub85c\uadf8 \uc0c1\uc1c4 \uc804\uc555\uc744 \uc0ac\uc6a9\ud55c\ub2e4. \uc18c\ud504\ud2b8\uc6e8\uc5b4 \ubcf4\uc0c1\uc740 \uce21\uc815\ud55c \uc5f4\uc804\ub300 \uc804\uc555\uacfc \uae30\uc900 \uc811\uc810 \uc628\ub3c4\uc758 \ub4f1\uac00 \uc5f4\uc804\uc555\uc744 \ub514\uc9c0\ud138\ub85c \ud569\uc0b0\ud55c\ub2e4. \uc18c\ud504\ud2b8\uc6e8\uc5b4\ub294 \uc5f4\uc804\ub300 \uc720\ud615 \ubcc0\uacbd\uc5d0 \uc720\uc5f0\ud558\ub2e4.<\/p>\n<h3>\uc5f4\uc804\ub300 \uc5f0\uc7a5\ub3c4\uc120<\/h3>\n<p>\uc77c\ubc18 \uad6c\ub9ac\uc120\uc73c\ub85c \uc5f0\uc7a5\ud558\uba74 \uc5f4\uc804\ub300 \ud5e4\ub4dc\uc5d0 \uc0c8\ub85c\uc6b4 \uae30\uc900 \uc811\uc810\uc774 \ub9cc\ub4e4\uc5b4\uc838 \ud2b8\ub79c\uc2a4\ubbf8\ud130 \ub0b4\ubd80\uc758 \ub0c9\uc811\uc810 \ubcf4\uc0c1 \uc704\uce58\uc640 \ubd88\uc77c\uce58\ud560 \uc218 \uc788\ub2e4. \ud574\ub2f9 \uc5f4\uc804\ub300\uc640 \ud638\ud658\ub418\ub294 \uc5f0\uc7a5\ub3c4\uc120(\uc608: KX)\uc744 \uc0ac\uc6a9\ud55c\ub2e4.<\/p>\n<h3>\uc785\ub825 \ub2e8\ub77d \uc2dc\ud5d8 (Short-circuit test)<\/h3>\n<p>\uc5f4\uc804\ub300 \uc785\ub825\uc744 \ub2e8\ub77d\ud558\uba74 \uce21\uc815 \uc5f4\uc804\uc555\uc740 \uc57d 0 mV\uc774\ub2e4. \ub0c9\uc811\uc810 \ubcf4\uc0c1\uc774 \ud65c\uc131\ud654\ub41c \uacc4\uae30\ub294 \uc774 \uac12\uc744 \ud604\uc7ac \ub2e8\uc790 \uc8fc\ubcc0 \uc628\ub3c4\uc5d0 \ud574\ub2f9\ud558\ub294 \uac12\uc73c\ub85c \ud574\uc11d\ud560 \uc218 \uc788\ub2e4. \uc804\uc555 \uc2dc\ubbac\ub808\uc774\uc158 \uc2dc\uc5d0\ub3c4 \ub0c9\uc811\uc810 \ubcf4\uc0c1\ubd84\uc744 \uace0\ub824\ud55c\ub2e4.<\/p>\n<h3>\ub2e8\uc120 \uac80\ucd9c (Burnout Detection)<\/h3>\n<p>\uc5f4\uc804\ub300\uac00 \uac1c\ubc29\ub418\uba74 \uce21\uc815 \uc785\ub825\uc774 \ubd80\ub3d9 \uc0c1\ud0dc\uac00 \ub420 \uc218 \uc788\ub2e4. \uace0\uc800\ud56d \ubc14\uc774\uc5b4\uc2a4\uc640 Hi\/Lo \uc120\ud0dd \ud68c\ub85c\ub85c \uc785\ub825\uc744 \uace0\uc628 \ub610\ub294 \uc800\uc628 \ubc29\ud5a5\uc73c\ub85c \uc720\ub3c4\ud55c\ub2e4. \uace0\uc7a5 \uc2dc \uc548\uc804 \ub3d9\uc791(Fail-safe)\uc740 \uacf5\uc815 \uc704\ud5d8 \ud3c9\uac00\uc640 \uc81c\uc5b4 \ub17c\ub9ac\uc5d0 \ub9de\uac8c \uacb0\uc815\ud55c\ub2e4.<\/p>\n<\/section>\n<h2>\uc6d0\ubb38 \ud544\uae30 \uac80\ud1a0 \uc0ac\ud56d<\/h2>\n<div class=\"review\"><ol>\n<li>\uc6d0\ubcf8 \ud544\uae30\uc758 \u201c\uc5bc\uc74c\/\ubb3c\uc758 \uc0bc\uc911\uc810\u201d\uc740 \uc11c\ub85c \ub2e4\ub978 \uac1c\ub150\uc774\ubbc0\ub85c \uad6c\ubd84\ud558\uc600\ub2e4. \uc77c\ubc18\uc801\uc778 \uc5bc\uc74c\u2013\ubb3c \ud63c\ud569\ubb3c\uc740 0\u00b0C\uc758 \uc5bc\uc74c\uc810 \uae30\uc900\uc774\uba70, \uc0bc\uc911\uc810 \uc140\uacfc \ub3d9\uc77c\ud558\uc9c0 \uc54a\ub2e4.<\/li>\n<li>\u201c\uc804\uc555\uc744 \uc791\uac8c \ud55c\ub2e4\u201d\ub294 \uc790\uae30\ubc1c\uc5f4\uc758 \uc9c1\uc811 \ub300\ucc45\uc774 \uc544\ub2c8\ub77c \uc5ec\uc790 \uc804\ub958\ub97c \ub0ae\ucd94\ub294 \uac83\uc774 \ud575\uc2ec\uc774\ub2e4. \uc804\uc555\uc740 \uacb0\uacfc\uc801\uc73c\ub85c \uac10\uc18c\ud560 \uc218 \uc788\ub2e4.<\/li>\n<li>\u201c\uc800\ud56d \uac10\uc18c \u2192 \uc804\ub958 \uc99d\uac00 \u2192 \uc591\uc758 \ud53c\ub4dc\ubc31\u201d\uc740 \uad6c\ub3d9 \ubc29\uc2dd\uacfc \uc11c\ubbf8\uc2a4\ud130\uc758 \ud2b9\uc131\uc5d0 \uc758\uc874\ud558\ubbc0\ub85c \ubaa8\ub4e0 RTD\u00b7\uc11c\ubbf8\uc2a4\ud130\uc5d0 \uc77c\ubc18\uc801\uc73c\ub85c \uc801\uc6a9\ud558\uc9c0 \uc54a\uc558\ub2e4.<\/li>\n<li>\u201c\ub2e8\uc120 \uc2dc \uc5f4\uc804\ub300 \uc804\uc555 = 0 V\u201d\ub294 \uac1c\ubc29 \ud68c\ub85c\uc758 \uc2e4\uc81c \ucd9c\ub825\uac12\uc73c\ub85c \ub2e8\uc815\ud560 \uc218 \uc5c6\ub2e4. \ub2e8\uc120 \uc2dc \ubc14\uc774\uc5b4\uc2a4 \ud68c\ub85c\uac00 \uc785\ub825\uc744 \ud2b9\uc815 \ubc29\ud5a5\uc73c\ub85c \uc720\ub3c4\ud55c\ub2e4.<\/li>\n<li>\u201c\ub2e8\ub77d \uc2dc \uc8fc\ubcc0 \uc628\ub3c4 \uc804\uc555\uc774 \ucd9c\ub825\u201d\uc740 \uc785\ub825 \uc790\uccb4\uac00 \uc544\ub2c8\ub77c \ub0c9\uc811\uc810 \ubcf4\uc0c1 \ud6c4\uc758 \ud45c\uc2dc\u00b7\ud574\uc11d \uacb0\uacfc\uc5d0 \uad00\ud55c \uc124\uba85\uc774\ub2e4.<\/li>\n<\/ol><\/div>\n<\/div>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2026\/10\/Lessons_In_Industrial_Instrumentation-5.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"Lessons_In_Industrial_Instrumentation-5\uc758 \uc0bd\uc785.\"><\/object><a id=\"wp-block-file--media-131e7187-0d9d-45b3-9b09-17b49a89febe\" href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2026\/10\/Lessons_In_Industrial_Instrumentation-5.pdf\">Lessons_In_Industrial_Instrumentation-5<\/a><a href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2026\/10\/Lessons_In_Industrial_Instrumentation-5.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-131e7187-0d9d-45b3-9b09-17b49a89febe\">\ub2e4\uc6b4\ub85c\ub4dc<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Chapter 21. Continuous Temperature Measurement \u2014 \uc5f0\uc18d \uc628\ub3c4 \uce21\uc815 \ud544\uae30 5\ud398\uc774\uc9c0 \uae30\ubc18 \u00b7 \uc628\ub3c4\uc640 \uc5f4\uc5d0\ub108\uc9c0 \u2192 \ubc14\uc774\uba54\ud0c8 \u2192 \ucda9\uc804\uc2dd \ubc8c\ube0c \u2192 \uc11c\ubbf8\uc2a4\ud130\u00b7RTD \u2192 \uc5f4\uc804\ub300\u00b7\uace0\uc7a5 \uac80\ucd9c \ucd9c\ucc98: Scan_20261018_152745.pdf (5\ud398\uc774\uc9c0) \ubc0f \uc0ac\uc6a9\uc790 \uc81c\uacf5 \uc804\uc0ac\ubcf8. \uc218\uc2dd\u00b7\uac1c\ub150 \uad50\uc815\uc740 \ub9e8 \uc544\ub798\uc5d0 \ubcc4\ub3c4 \ud45c\uc2dc\ud568. 21\uc7a5 \ub3c4\uc785 \u2014 \uc628\ub3c4\uc640 \uc5f4\uc5d0\ub108\uc9c0 \uc628\ub3c4 (Temperature) \ubb3c\uc9c8 \ub0b4\ubd80 \ubd84\uc790\uc758 \ud3c9\uade0 \uc6b4\ub3d9\uc5d0\ub108\uc9c0\uc640 \uad00\uacc4\ub41c\ub2e4. \ub2e8\uc6d0\uc790 \uc774\uc0c1\uae30\uccb4\uc758 \ubcd1\uc9c4 \uc6b4\ub3d9\uc5d0\ub108\uc9c0 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[1185],"tags":[1262,2227],"class_list":["post-9752","post","type-post","status-publish","format-standard","hentry","category-1185","tag-1262","tag-2227"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts\/9752","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/comments?post=9752"}],"version-history":[{"count":3,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts\/9752\/revisions"}],"predecessor-version":[{"id":9758,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts\/9752\/revisions\/9758"}],"wp:attachment":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/media?parent=9752"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/categories?post=9752"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/tags?post=9752"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}