가스센서종류 및 특성

<SPAN style="COLOR: #c00000; FONT-SIZE: 11pt; mso-ascii-font-family: '맑은 고딕'; mso-ascii-theme-font: major-latin; mso-fareast-font-family: '맑은 고딕'; mso-fareast-theme-font: major-latin; mso-hansi-font-family: '맑은 고딕'; mso-hansi-theme-font: major-latin">가스센서종류 및 특성 <TABLE style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-COLLAPSE: collapse; BORDER-TOP: medium none; BORDER-RIGHT: medium none; mso-border-alt: solid #FFC000 .5pt; mso-yfti-tbllook: 1184; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-insideh: .5pt solid #FFC000; mso-border-insidev: .5pt solid #FFC000" class=MsoTableGrid border=1 cellSpacing=0 cellPadding=0> <TBODY> <TR style="mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-yfti-lastrow: yes"> <TD style="BORDER-BOTTOM: #ffc000 1pt solid; BORDER-LEFT: #ffc000 1pt solid; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 125.9pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ffc000 1pt solid; BORDER-RIGHT: #ffc000 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid #FFC000 .5pt" vAlign=top width=168>   <?xml:namespace prefix = v /><v:shapetype id=_x0000_t75 coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"><v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f eqn="if lineDrawn pixelLineWidth 0"></v:f><v:f eqn="sum @0 1 0"></v:f><v:f eqn="sum 0 0 @1"></v:f><v:f eqn="prod @2 1 2"></v:f><v:f eqn="prod @3 21600 pixelWidth"></v:f><v:f eqn="prod @3 21600 pixelHeight"></v:f><v:f eqn="sum @0 0 1"></v:f><v:f eqn="prod @6 1 2"></v:f><v:f eqn="prod @7 21600 pixelWidth"></v:f><v:f eqn="sum @8 21600 0"></v:f><v:f eqn="prod @7 21600 pixelHeight"></v:f><v:f eqn="sum @10 21600 0"></v:f></v:formulas><v:path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"></v:path><?xml:namespace prefix = o /><o:lock v:ext="edit" aspectratio="t"></o:lock></v:shapetype> <img src="https://t1.daumcdn.net/cfile/cafe/1453BF464FA8F6E52D" class="txc-image" style="FLOAT: none; CLEAR: none" actualwidth="152" border="0" hspace="1" vspace="1" width="152" id="A_1453BF464FA8F6E52D9D6E"/> <v:shapetype id=_x0000_t75 coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"><o:lock v:ext="edit" aspectratio="t"></o:lock></v:shapetype></TD> <TD style="BORDER-BOTTOM: #ffc000 1pt solid; BORDER-LEFT: #ece9d8; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 335.3pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ffc000 1pt solid; BORDER-RIGHT: #ffc000 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid #FFC000 .5pt; mso-border-left-alt: solid #FFC000 .5pt" vAlign=top width=447>   열선형 반도체식(CH)   금속산화물반도체 표면에서의 가스흡착에 의한 열전도변화 및 전기 전도도변화를 백금선코일의 양끝에서 본 저항치 변화로 측정 - 저농도에서 출력의 변화가 크고 고감도이다 - 반도체식에 비해 초기안정시간이 짧고, 소형화, 저전력화가 가능. - 수명이 길고 안정성, 내구성 뛰어남 - 가스에 대한 선택성을 가짐(H2, CH4, C2H5OH등)  </TD></TR></TBODY></TABLE>     <TABLE style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-COLLAPSE: collapse; BORDER-TOP: medium none; BORDER-RIGHT: medium none; mso-border-alt: solid #92D050 .5pt; mso-yfti-tbllook: 1184; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-insideh: .5pt solid #92D050; mso-border-insidev: .5pt solid #92D050" class=MsoTableGrid border=1 cellSpacing=0 cellPadding=0> <TBODY> <TR style="mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-yfti-lastrow: yes"> <TD style="BORDER-BOTTOM: #92d050 1pt solid; BORDER-LEFT: #92d050 1pt solid; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 125.9pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: #92d050 1pt solid; BORDER-RIGHT: #92d050 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid #92D050 .5pt" vAlign=top width=168>    <o:p style="TEXT-ALIGN: center"><img src="https://t1.daumcdn.net/cfile/cafe/11104C414FA8F70535" class="txc-image" style="FLOAT: none; CLEAR: none" actualwidth="152" border="0" hspace="1" vspace="1" width="152" id="A_11104C414FA8F705350CF6"/>   </TD> <TD style="BORDER-BOTTOM: #92d050 1pt solid; BORDER-LEFT: #ece9d8; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 335.3pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: #92d050 1pt solid; BORDER-RIGHT: #92d050 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid #92D050 .5pt; mso-border-left-alt: solid #92D050 .5pt" vAlign=top width=447>   <SPAN style="LINE-HEIGHT: 120%; COLOR: black; mso-ascii-font-family: '맑은 고딕'; mso-ascii-theme-font: minor-fareast; mso-hansi-font-family: '맑은 고딕'; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: 굴림; mso-font-kerning: 0pt">접촉연소식(CS) <SPAN style="LINE-HEIGHT: 120%; COLOR: black; mso-ascii-font-family: '맑은 고딕'; mso-ascii-theme-font: minor-fareast; mso-hansi-font-family: '맑은 고딕'; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: 굴림; mso-font-kerning: 0pt">  <SPAN style="LINE-HEIGHT: 120%; COLOR: black; mso-ascii-font-family: '맑은 고딕'; mso-ascii-theme-font: minor-fareast; mso-hansi-font-family: '맑은 고딕'; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: 굴림; mso-font-kerning: 0pt">촉매표면에서의 가스의 접촉연소에 의한 백금선 코일의 온도상승(저항치 변화)을 측정 <SPAN style="LINE-HEIGHT: 120%; COLOR: black; mso-ascii-font-family: '맑은 고딕'; mso-ascii-theme-font: minor-fareast; mso-hansi-font-family: '맑은 고딕'; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: 굴림; mso-font-kerning: 0pt">- <SPAN style="LINE-HEIGHT: 120%; COLOR: black; mso-ascii-font-family: '맑은 고딕'; mso-ascii-theme-font: minor-fareast; mso-hansi-font-family: '맑은 고딕'; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: 굴림; mso-font-kerning: 0pt">출력이 가스농도에 비례하여 LEL까지 거의 직선임 <SPAN style="LINE-HEIGHT: 120%; COLOR: black; mso-ascii-font-family: '맑은 고딕'; mso-ascii-theme-font: minor-fareast; mso-hansi-font-family: '맑은 고딕'; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: 굴림; mso-font-kerning: 0pt">- <SPAN style="LINE-HEIGHT: 120%; COLOR: black; mso-ascii-font-family: '맑은 고딕'; mso-ascii-theme-font: minor-fareast; mso-hansi-font-family: '맑은 고딕'; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: 굴림; mso-font-kerning: 0pt">정도가 높고 재현성이 뛰어남 <SPAN style="LINE-HEIGHT: 120%; COLOR: black; mso-ascii-font-family: '맑은 고딕'; mso-ascii-theme-font: minor-fareast; mso-hansi-font-family: '맑은 고딕'; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: 굴림; mso-font-kerning: 0pt">- <SPAN style="LINE-HEIGHT: 120%; COLOR: black; mso-ascii-font-family: '맑은 고딕'; mso-ascii-theme-font: minor-fareast; mso-hansi-font-family: '맑은 고딕'; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: 굴림; mso-font-kerning: 0pt">저전력형(CSS)는 종래의 접촉연소식에 비해 소비전력이 ¼정도임. <SPAN style="LINE-HEIGHT: 120%; COLOR: black; mso-ascii-font-family: '맑은 고딕'; mso-ascii-theme-font: minor-fareast; mso-hansi-font-family: '맑은 고딕'; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: 굴림; mso-font-kerning: 0pt">- <SPAN style="LINE-HEIGHT: 120%; COLOR: black; mso-ascii-font-family: '맑은 고딕'; mso-ascii-theme-font: minor-fareast; mso-hansi-font-family: '맑은 고딕'; mso-hansi-theme-font: minor-fareast; mso-bidi-font-family: 굴림; mso-font-kerning: 0pt">주위 온도나 습도의 영향을 받지 않음  </TD></TR></TBODY></TABLE>     <TABLE style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-COLLAPSE: collapse; BORDER-TOP: medium none; BORDER-RIGHT: medium none; mso-border-alt: solid #D99594 .5pt; mso-yfti-tbllook: 1184; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-insideh: .5pt solid #D99594; mso-border-insidev: .5pt solid #D99594; mso-border-themecolor: accent2; mso-border-themetint: 153; mso-border-insideh-themecolor: accent2; mso-border-insideh-themetint: 153; mso-border-insidev-themecolor: accent2; mso-border-insidev-themetint: 153" class=MsoTableGrid border=1 cellSpacing=0 cellPadding=0> <TBODY> <TR style="mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-yfti-lastrow: yes"> <TD style="BORDER-BOTTOM: #d99594 1pt solid; BORDER-LEFT: #d99594 1pt solid; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 125.9pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d99594 1pt solid; BORDER-RIGHT: #d99594 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid #D99594 .5pt; mso-border-themecolor: accent2; mso-border-themetint: 153" vAlign=top width=168>   <o:p style="TEXT-ALIGN: center"><img src="https://t1.daumcdn.net/cfile/cafe/1174A0404FA8F71F16" class="txc-image" style="FLOAT: none; CLEAR: none" actualwidth="152" border="0" hspace="1" vspace="1" width="152" id="A_1174A0404FA8F71F16F5DD"/>   </TD> <TD style="BORDER-BOTTOM: #d99594 1pt solid; BORDER-LEFT: #ece9d8; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 335.3pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d99594 1pt solid; BORDER-RIGHT: #d99594 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid #D99594 .5pt; mso-border-left-alt: solid #D99594 .5pt; mso-border-themecolor: accent2; mso-border-themetint: 153; mso-border-left-themecolor: accent2; mso-border-left-themetint: 153" vAlign=top width=447>   기체열전도식(CT)   가스의 열전도도의 차에 의한 발열체(백금선코일)의 온도변화를 측정 - 100Vol%의 가스농도까지 출력은 직선성이며 고농도 가스검지에 적합. - 열전도 특징인 촉매의 노화, 독성의 피해가 없어 경제적으로 안정. - 산소 없이도 측정 가능.  </TD></TR></TBODY></TABLE>     <TABLE style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-COLLAPSE: collapse; BORDER-TOP: medium none; BORDER-RIGHT: medium none; mso-border-alt: solid #8DB3E2 .5pt; mso-yfti-tbllook: 1184; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-insideh: .5pt solid #8DB3E2; mso-border-insidev: .5pt solid #8DB3E2; mso-border-themecolor: text2; mso-border-themetint: 102; mso-border-insideh-themecolor: text2; mso-border-insideh-themetint: 102; mso-border-insidev-themecolor: text2; mso-border-insidev-themetint: 102" class=MsoTableGrid border=1 cellSpacing=0 cellPadding=0> <TBODY> <TR style="mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-yfti-lastrow: yes"> <TD style="BORDER-BOTTOM: #8db3e2 1pt solid; BORDER-LEFT: #8db3e2 1pt solid; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 125.9pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: #8db3e2 1pt solid; BORDER-RIGHT: #8db3e2 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid #8DB3E2 .5pt; mso-border-themecolor: text2; mso-border-themetint: 102" vAlign=top width=168>   <o:p style="TEXT-ALIGN: center"> <o:p style="TEXT-ALIGN: center"><img src="https://t1.daumcdn.net/cfile/cafe/203F963F4FA8F7332B" class="txc-image" style="FLOAT: none; CLEAR: none" actualwidth="152" border="0" hspace="1" vspace="1" width="152" id="A_203F963F4FA8F7332B1666"/><o:p style="TEXT-ALIGN: center"></TD> <TD style="BORDER-BOTTOM: #8db3e2 1pt solid; BORDER-LEFT: #ece9d8; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 335.3pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: #8db3e2 1pt solid; BORDER-RIGHT: #8db3e2 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid #8DB3E2 .5pt; mso-border-left-alt: solid #8DB3E2 .5pt; mso-border-themecolor: text2; mso-border-themetint: 102; mso-border-left-themecolor: text2; mso-border-left-themetint: 102" vAlign=top width=447>   정전위전해식(COS)   가스를 특별히 정한 전위에서 전해하여 그때 생기는 전해전류를 검지하여 가스농도를 측정 - 대단한 고감도(예: CO:1PPM) - 가스의 선택성이 뛰어나 독성가스측정에 최적이어서 분석계에 사용 - 저농도에서 출력이 직선성 - 타가스의 간섭을 받지 않음  </TD></TR></TBODY></TABLE>     <TABLE style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-COLLAPSE: collapse; BORDER-TOP: medium none; BORDER-RIGHT: medium none; mso-border-alt: solid #C2D69B .5pt; mso-yfti-tbllook: 1184; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-insideh: .5pt solid #C2D69B; mso-border-insidev: .5pt solid #C2D69B; mso-border-themecolor: accent3; mso-border-themetint: 153; mso-border-insideh-themecolor: accent3; mso-border-insideh-themetint: 153; mso-border-insidev-themecolor: accent3; mso-border-insidev-themetint: 153" class=MsoTableGrid border=1 cellSpacing=0 cellPadding=0> <TBODY> <TR style="mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-yfti-lastrow: yes"> <TD style="BORDER-BOTTOM: #c2d69b 1pt solid; BORDER-LEFT: #c2d69b 1pt solid; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 125.9pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: #c2d69b 1pt solid; BORDER-RIGHT: #c2d69b 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid #C2D69B .5pt; mso-border-themecolor: accent3; mso-border-themetint: 153" vAlign=top width=168>    <o:p style="TEXT-ALIGN: center"> <o:p style="TEXT-ALIGN: center"><img src="https://t1.daumcdn.net/cfile/cafe/140D0B404FA8F74702" class="txc-image" style="FLOAT: none; CLEAR: none" actualwidth="152" border="0" hspace="1" vspace="1" width="152" id="A_140D0B404FA8F747029A32"/><o:p style="TEXT-ALIGN: center"></TD> <TD style="BORDER-BOTTOM: #c2d69b 1pt solid; BORDER-LEFT: #ece9d8; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 335.3pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: #c2d69b 1pt solid; BORDER-RIGHT: #c2d69b 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid #C2D69B .5pt; mso-border-left-alt: solid #C2D69B .5pt; mso-border-themecolor: accent3; mso-border-themetint: 153; mso-border-left-themecolor: accent3; mso-border-left-themetint: 153" vAlign=top width=447>   박막형 반도체식(AET)   두께가 10-8㎝정도의 박막 반도체 표면에의 가스 흡착에 의한 전기전도도 변화를 측정 - 반도체센서에 비해 고감도 - 가스에 대한 선택성이 있음(Cl2, H2S, EO등) - 비교적 고온에서 작동하고 표면에 자기정화작용이 있어 재현성과 장기안정성이 뛰어남  </TD></TR></TBODY></TABLE>     <TABLE style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-COLLAPSE: collapse; BORDER-TOP: medium none; BORDER-RIGHT: medium none; mso-border-alt: solid #95B3D7 .5pt; mso-yfti-tbllook: 1184; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-insideh: .5pt solid #95B3D7; mso-border-insidev: .5pt solid #95B3D7; mso-border-themecolor: accent1; mso-border-themetint: 153; mso-border-insideh-themecolor: accent1; mso-border-insideh-themetint: 153; mso-border-insidev-themecolor: accent1; mso-border-insidev-themetint: 153" class=MsoTableGrid border=1 cellSpacing=0 cellPadding=0> <TBODY> <TR style="mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-yfti-lastrow: yes"> <TD style="BORDER-BOTTOM: #95b3d7 1pt solid; BORDER-LEFT: #95b3d7 1pt solid; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 125.9pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: #95b3d7 1pt solid; BORDER-RIGHT: #95b3d7 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid #95B3D7 .5pt; mso-border-themecolor: accent1; mso-border-themetint: 153" vAlign=top width=168>   <o:p style="TEXT-ALIGN: center"> <o:p style="TEXT-ALIGN: center"><img src="https://t1.daumcdn.net/cfile/cafe/165206434FA8F75A23" class="txc-image" style="FLOAT: none; CLEAR: none" actualwidth="152" border="0" hspace="1" vspace="1" width="152" id="A_165206434FA8F75A23349D"/><o:p style="TEXT-ALIGN: center"> <o:p style="TEXT-ALIGN: center"> </TD> <TD style="BORDER-BOTTOM: #95b3d7 1pt solid; BORDER-LEFT: #ece9d8; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 335.3pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: #95b3d7 1pt solid; BORDER-RIGHT: #95b3d7 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid #95B3D7 .5pt; mso-border-left-alt: solid #95B3D7 .5pt; mso-border-themecolor: accent1; mso-border-themetint: 153; mso-border-left-themecolor: accent1; mso-border-left-themetint: 153" vAlign=top width=447>   격막 Galvani전지식(OS)   두개의 전극(Pt-Pb)와 격막, 전해액으로 구성된 전지의 반응물질로서 산소를 이용했을 때 생기는 반응전류를 측정. - 가스검출시 외부전원 필요없음. - 취급간단, 저가격으로 보급성이 뛰어남. - 출력이 산소농도에 비례하여 40Vol%까지는 거의 직선성유지.  </TD></TR></TBODY></TABLE>     <TABLE style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-COLLAPSE: collapse; BORDER-TOP: medium none; BORDER-RIGHT: medium none; mso-border-alt: solid #C4BC96 .5pt; mso-yfti-tbllook: 1184; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-insideh: .5pt solid #C4BC96; mso-border-insidev: .5pt solid #C4BC96; mso-border-themecolor: background2; mso-border-insideh-themecolor: background2; mso-border-insidev-themecolor: background2; mso-border-themeshade: 191; mso-border-insideh-themeshade: 191; mso-border-insidev-themeshade: 191" class=MsoTableGrid border=1 cellSpacing=0 cellPadding=0> <TBODY> <TR style="mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-yfti-lastrow: yes"> <TD style="BORDER-BOTTOM: #c4bc96 1pt solid; BORDER-LEFT: #c4bc96 1pt solid; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 125.9pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: #c4bc96 1pt solid; BORDER-RIGHT: #c4bc96 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid #C4BC96 .5pt; mso-border-themecolor: background2; mso-border-themeshade: 191" vAlign=top width=168>   <o:p style="TEXT-ALIGN: center"> <o:p style="TEXT-ALIGN: center"><img src="https://t1.daumcdn.net/cfile/cafe/1646B8444FA8F77132" class="txc-image" style="FLOAT: none; CLEAR: none" actualwidth="152" border="0" hspace="1" vspace="1" width="152" id="A_1646B8444FA8F7713287E5"/><o:p style="TEXT-ALIGN: center"> <o:p style="TEXT-ALIGN: center"> </TD> <TD style="BORDER-BOTTOM: #c4bc96 1pt solid; BORDER-LEFT: #ece9d8; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 335.3pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: #c4bc96 1pt solid; BORDER-RIGHT: #c4bc96 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid #C4BC96 .5pt; mso-border-left-alt: solid #C4BC96 .5pt; mso-border-themecolor: background2; mso-border-left-themecolor: background2; mso-border-themeshade: 191; mso-border-left-themeshade: 191" vAlign=top width=447>   반도체식(CZ)   금속산화물 반도체 표면에서의 가스흡착에 의한 전기전도도 변화를 측정 - 저농도에서 출력의 변화가 크고 고감도임 - 긴수명과 장기 안정성 - 접촉연소식에 비하여 피독성가스, 최악의 분위기에서도 내구성유지  </TD></TR></TBODY></TABLE>     <TABLE style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-COLLAPSE: collapse; BORDER-TOP: medium none; BORDER-RIGHT: medium none; mso-border-alt: solid #FABF8F .5pt; mso-yfti-tbllook: 1184; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-insideh: .5pt solid #FABF8F; mso-border-insidev: .5pt solid #FABF8F; mso-border-themecolor: accent6; mso-border-themetint: 153; mso-border-insideh-themecolor: accent6; mso-border-insideh-themetint: 153; mso-border-insidev-themecolor: accent6; mso-border-insidev-themetint: 153" class=MsoTableGrid border=1 cellSpacing=0 cellPadding=0> <TBODY> <TR style="mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-yfti-lastrow: yes"> <TD style="BORDER-BOTTOM: #fabf8f 1pt solid; BORDER-LEFT: #fabf8f 1pt solid; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 125.9pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: #fabf8f 1pt solid; BORDER-RIGHT: #fabf8f 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid #FABF8F .5pt; mso-border-themecolor: accent6; mso-border-themetint: 153" vAlign=top width=168>   <o:p style="TEXT-ALIGN: center"> <o:p style="TEXT-ALIGN: center"><img src="https://t1.daumcdn.net/cfile/cafe/1740933D4FA8F78209" class="txc-image" style="FLOAT: none; CLEAR: none" actualwidth="152" border="0" hspace="1" vspace="1" width="152" id="A_1740933D4FA8F78209DC1D"/><o:p style="TEXT-ALIGN: center"> <o:p style="TEXT-ALIGN: center"> </TD> <TD style="BORDER-BOTTOM: #fabf8f 1pt solid; BORDER-LEFT: #ece9d8; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 335.3pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: #fabf8f 1pt solid; BORDER-RIGHT: #fabf8f 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid #FABF8F .5pt; mso-border-left-alt: solid #FABF8F .5pt; mso-border-themecolor: accent6; mso-border-themetint: 153; mso-border-left-themecolor: accent6; mso-border-left-themetint: 153" vAlign=top width=447>   유기성 가스, 액체 민감성소자식(OR)   탄소계저항체의 주된 결합제(고분자물질)의 오일 및 유기용제 증기에 대한 팽윤성을 저항치의 변화로 측정 - 상온에서 작동하며 응답속도가 극히 빠름 - 소형, 경량으로 기계적 Shock에 뛰어남 - 결합제를 적당히 선택하므로 Oil 유기용제증기를 선택적으로 검출  </TD></TR></TBODY></TABLE>     센서의 수명 및 교체 대부분의 센서는 공기에 접촉하는 것만으로도 열화가 진행되는데, 이러한 현상은 측정기를 사용하지 않더라도 발생하며, 일정한 기간이 경과하면 사용이 불가능하게 된다.   안전용 가스 분석기에서 폭넓게 채택되고 있는 전기화학식 센서의 경우, 그 수명은 접촉한 공기에 포함된 해당 가스의 농도와 접촉시간의 누적치로 나타나지만,  정도의 차이는 있지만, 모든 가스 센서는 주위온도 및 습도의 변화에 민감하게 반응하고, 그 수명도 주위 환경에 따라 가감될 수 있으므로 정상적인 환경 조건을 유지하려는 노력이 필요하다     출 처 : <A class=tx-link href="http://www.sdtron.co.kr/" target=_blank>선두전자</A>  </o:p></o:p></o:p></o:p></o:p></o:p></o:p></o:p></o:p></o:p></o:p></o:p></o:p></o:p></o:p></o:p></o:p></o:p></o:p></o:p>