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Àã«×¤§©w¸q¨t«üªÅ®ð©Î¨ä¥L®ðÅ餤¤ô»]¨T§t¶q¦h¹è¦Ó¨¥. ªí¥ÜÀã«×ªº¾Ç¦W±`¥Îªº¨âºØ¦³µ´¹ïÀã«×(absolute humidity) »P¬Û¹ïÀã«× (relative humidity). ©Ò¿×µ´¹ïÀã«×§Y«ü¹ê»Ú¦s¦b©óªÅ®ð¤¤¤§¤ô»]¨T§t¶q, ­pºâ¤èªk³q±`¥H®e¶q©Î­«¶q¦Ê¤À¤ñ³æ¦ìªí¥Ü. ¦Ó¬Û¹ïÀã«×«h¬O«üµ´¹ïÀã«×»P¨ä¬Û¦P·Å«×¤UªÅ®ð¤¤¯à¦s¦bªº³Ì¤j¤ô¾¹¶q¤§¤ñ­È, ªÅ®ð·Å«×¶V°ª«h«O¦³ªº¤ô¨T·U¦h, ¬G¬Û¹ïÀã«×»P·Å«×¤§Ãö«Y±K¤£¥i¤À.

Àã«×¶q´ú¬O¤@¶µ¤£©öªº¤u§@, °£¤F¼e¼sªº´ú¸Õ½d³ò±q§C©ó 0.01ppm ¦Ü¤j©ó¦Ê¤À¤§¥|¤Q, ³\¦h¤£¦P¥Î³~ªº­p¶q³æ¦ì¦pÅSÂI©Î¦BÂI·Å«× (DP/FP), ¬Û¹ïÀã«× (%RH), °®Àã²y·Å«× (wet/dry bulb temp.), ¦Ê¸U¤À¤ñ (ppm) ©Î¨C½S®ðÅ餤»]¨T§t¶q, °ò©ó¤W­z¦h­«ÅܼÆ, ±ý¨ú±o¤@³¡¥\¯à¥i¥þ³¡²[»\¤§´ú¸Õ»ö¾¹½T¹ê¤Q¤À§xÃø. ¥»¤½¥q¦³Å³©ó¦¹, ÂǤG¤Q¾l¦~²Ö¿n¤§¸gÅç¤Àªù§OÃþªº¾ã²z¥X¥þ¨t¦C¾A¦X¦UºØ¤£¦P¥Î³~ªºÀã«×´ú¸Õ»ö¾¹Â²¤¶¦p¤U

ÅSÂI·Å«×·PÀ³¾¹ (Dew point Sensor)

A. Ãè­±§N¾®ÅSÂI·PÀ³¾¹ (Chilled Mirror DP Sensor) ©Ò¿×ÅSÂI´N¬O»]¨T±N¾®µ²¦¨ÅS¤ô®É¤§·Å«×, §Q¥ÎÅSÂI·Å«×¨Ó¬É©w»]¨T§t¶qªº¦h¹è¬O¤@ºØ³Ì·Ç½TªºÀã«×¶q´ú¤èªk, À³¥Î­ì²z¨t§Q¥Î¸Õ¼Ë®ðÅé³q¹L¤@­±·Å«×§C©ó±`·ÅªºÃè¤ù®É, ®ðÅ餤¤§¤ô¨T·|¦bÃè¤ùªí­±¤W³vº¥¾®µ²¦¨¤p¤ôºw, Ãè­±¤Wªº¤ôºw·U¦h¥ú½u§é®g²v·U§C, ¥H¦¹­ì²z¶q´úÅSÂI·Å«×¬O³Ì·Ç½Tªº¤u¨ã¦Ó¥B¦¹¤èªk¥ç¬°NBS¤ÎNIST©Ò»{¥i.

B. ´â¤Æ¾Y·PÀ³¾¹ (Lithium Chloride) ´â¤Æ¾Y¬O¤@ºØ§lÀã©Ê¤Æ¾ÇÆQÃþ, ·í§l¦¬¤ô¥÷¶q¼W¦h®ÉÄñ¶©óªí­±¤Wªº¾É¹q²Ó½u·|¼W¤j¹q¬y¨Ã²£¥Í¼ö, ¦b¥[¼ö§N«o »P»]µo¾®µ²¹Lµ{¤¤¥­¿Åªº·Å«×§Y¬°ÅSÂI·Å«×. ¥Ñ©ó´â¤Æ¾Y·PÀ³¾¹¤ÏÀ³®É¶¡¸ûºC, ¨C¤@¤ÏÀ³¶g´Á¬ù»Ý¤Q¤ÀÄÁ, ¦Ó¥B ·í»]¨TÀ£¤O§C©ó´â¤Æ¾Y¹¡©M»]¨TÀ£¤O®É§YµLªk¨Ï¥Î.

C. ®ñ¤Æ¾T·PÀ³¾¹ (Aluminum Oxide) ¦b¤@¾É¹q§÷®Æªí¼hÁá¥H®ñ¤Æ¾T«á¦AÁá¤W¤@¼hÁ¡Á¡ªº¶Àª÷, ·í¤ô»]¨Tº¯³z¶Àª÷¼h¦Ó¨ü¦h¤Õ©Ê®ñ¤Æ¾T©Ò§l¦¬¤§«á¤ô¤À ¤l§ïÅܹq®eÅ骺¹q®ðªý§Ü. ¥Ñ©ó³oºØ·PÀ³¾¹¤§¿é¥X°T¸¹¬°«D½u©Ê¤Î¤£³W«ß, ¬G¨C­Ó·PÀ³¾¹¥²»Ý¤À§O©ó¥Hºë½T®Õ¥¿ ¨ä¼Ð·Ç¦±½u.

¬Û¹ïÀã«× (Relative Humidity)

A. ¹qªý¦¡Àã«×­p (Resistive sensor) ·PÀ³¹q·¥±Ä¥Î¹ïÀã«×·¥¬°±Ó·PªºÆQÃþ¥]®I¤_»E¦X¾ð¯×«á©óªí¼hÁá¤W¤@¼h³z®ð©Ê«OÅ@½¤¦Ó¦¨. §Q¥Î¤ô»]¨T§ïÅܹq·¥ ªº¹qªý¥H¿Å¶qÀã«×. ¦]¨ã¦³¸gÀ٩ʤηPÀ³¾¹Åé¿n·L¤p©ö©ó¸Ë°t¦Ó¼s¨ü´¶¹M±Ä¥Î

B. ¹q®e¦¡Àã«×­p (Capacitive sensor) ¦¹·PÀ³¾¹¤ñ¸û¾A¦X©ó°ª·Å§CÀã«×Àô¹Ò, ³\¦hÀã«×¶Ç°T¾¹³£±Ä¥Î³oºØ·PÀ³¾¹

C. ¹q¸Ñ¦¡Àã«×­p (Electrolytic sensor) ¤­®ñ¤Æ¤GÁCÁ¡½¤¹q¸Ñ¤è¦¡Àã«×­p¤§´ú¸Õ½d³ò±q 0 ~ 1,000PPMv, ·Ç½T«×¤j­P¬° +/-5% ¥H¤º, ¥Ñ©ó¦¹¤èªk¤§ªí¥Ü ³æ¦ì¤j¦h±Ä¥Î PPMv, ¸û¾A¦X¤u·~¬É¨Ï¥Î.

D. ·F/Àã²y·Å«×­p (Dry / Wet Bulb Temperature) ¦b§N«o¹Lµ{ùؤuµ{¤H­û¤@ª½³£¥HÀã²y·Å«×­p¥h¶q´ú§N«o¾¹, ¦]¬°¥¦¨ã¦³©ú½Tªº¼Æ¾Ç¬ÛÃö²z½×°ò¦. ¦¹¤èªkÁöµM¨ã ³Æ²©ö©Ê»P¸gÀÙ©Ê, ¦ý·Ç½T«×¤£¨¬, ¸Ë¸m¤ÎºûÅ@¤£©ö¤w³vº¥³Q·s¬ì§Þ²£ª«¤§ÅSÂI­p¤Î¬Û¹ïÀã«×­p©Ò¨ú¥N.

E. ¬õ¥~½u§l¦¬¦¡Àã«×­p (Infrared absorption sensor) ±Ä¥Î¬õ¥~½u§l¦¬«D±µÄ²»»´ú¤è¦¡·Ç½T¤Î¨³³tªº´ú¶q¥X¤j®ð¤¤¤ô»]¨T§t¶q©Îª«½è¤¤¤ô¥÷§t¶q, ¥»»ö¾¹¬O¾A¥Î©ó®ð¶H Æ[´ú, ¨å«¬ªºÀ³¥Î½d³ò¬°¯èªÅ¤Î¤ÓªÅ¾÷¨ã, ²î¤Wªº®ü¬v®ð¶HÆ[´ú, ¾÷³õ¯èºÞ®ð¶H¸ê®Æ·j¶°¤Îºë±Kªº®ð¶H¬ã¨s. §ó¥Ñ©ó¦¹¤èªk¥i±Ä¥Î«D±µÄ²¤è¦¡·Ç½T¶q´ú, ¦]¦¹³\¦h°ÊºAª«¤§¤ô¥÷§t¶q¤Î²£·~¨îµ{½u¤W²£«~©Î­ì®Æ¤§¤ô¥÷§t¶q±± ¨î¤]³£±Ä¥Î³oºØ»ö¾¹.

F. ¤ò¾v/¥§Às/ÅÖºû¯À·PÀ³Àã«×­p (Hair, Nylon, Cellulose) ¦¹¤èªkÀ³¥Î¤§­ì²z¤DÂǥѪ«½è§lÀ㿱µÈ°®ÀꦬÁY¤§ª«²z©Ê§ïÅܦӳ]­p¤§³Ì²©öªº¾÷±ñ¦¡Àã«×¶q´ú»ö¾¹. ³Ì³Q¼sªx ±Ä¥Îªº¦h¤Õ©Êª«½è¬°¤ò¾v, ¥Ñ©ó¨ã¦³¸gÀÙ©Ê»P²©ö©Ê, ³\¦hÀã«×°O¿ý»ö¾¹³£±Ä¥Î¦¹¤è¦¡. ¦ý·Ç½T«×¤Î­@¥Î©Ê»Ý·V ­«¦Ò¼{.

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