Calibration
Type Characteristics
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Thermocouple Insulation,
Thermocouple insulation À̶õ Thermocouple ¶Ç´Â ¿¬Àå¼± ¿¡ Àü±âÀû
Àý¿¬À» ÇØ ÁÖ´Â ±â´ÉÀ» ÇÕ´Ï´Ù.
Àý¿¬ÀÌ ±úÁö°Ô µÇ¸é Thermocouple ÀÌ Ç¥½ÃÇÏ´Â ¿Âµµ´Â Error À̹ǷΠ½Å·Ú¼ºÀ» ÀÒ½À´Ï´Ù.
Insulation À» ¼±Åà ÇÒ¶§´Â ½À±â ºÐÀ§±â »óÅÂ, ÈÇÐÀû ºÐÀ§±â, ¿Âµµ, µîÀÌ °í·Á µÇ¾î¾ß
ÇÕ´Ï´Ù.
Insulation Àº ¿Âµµ¿¡ µû¶ó ÀûÇÕÇÑ ÀçÁúÀ» ¼±Á¤ ÇØ¾ß ÇÕ´Ï´Ù. »ç¿ë¿Âµµ º¸´Ù ³ôÀº
ȯ°æ¿¡¼ »ç¿ëÇϸé Insulation ÀÌ º¯ÇüµÇ°Å³ª °ÑÀ¸·Î º¸±â¿¡ ±¦Âú¾Æµµ ÀçÁúº¯ÇüÀ¸·Î ÀÎÇØ
µµÃ¼ÀÇ ¼º°ÝÀ» ¶é ¼öµµ ÀÖ½À´Ï´Ù.
¿Âµµ¼¾¼·Î Àбâ Àü¿¡ ·Î ¾ÈÀÇ ¿Âµµ¸¦ Àý´ë ÁüÀÛ Çؼ´Â ¾ÊµË´Ï´Ù.
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Type
T (COPPER vs CONSTANTAN) ´Â »êÈ ºñÈ°¼º ȯ¿ø,Áø°ø ºÐÀ§±â¿¡¼ »ç¿ëÀÌ °¡´É ÇÕ´Ï´Ù.
½Àµµ¿¡¼ ¿À´Â ºÎ½Ä¿¡ °ÇÕ´Ï´Ù. ƯÈ÷ Àú¿Â¿¡¼ ¾ÈÁ¤¼ºÀ» º¸¿© ÁÝ´Ï´Ù. ±ØÀú¿Â Áï - ¿Âµµ ´ë¿ª¿¡¼
Thermocouple type Áß °¡Àå Á¤È®ÇÏ°Ô ¿Âµµ¸¦ Sensing ÇÕ´Ï´Ù. |
Type
J (IRON vs CONSTANTAN) ´Â Áø°ø,
»êÈ ºñÈ°¼º ȯ¿ø ºÐÀ§±â ¿¡¼ »ç¿ëÀÌ °¡´É
ÇÕ´Ï´Ù.
Iron ¼ÒÀÚ´Â 1000¡ÆFÀ̻󿡼 »êÈ µÉ ¼ö ÀÖÀ¸¹Ç·Î µÎ²¨¿î Gauge ÀÇWire ¸¦ »ç¿ëÇÒ
ÇÊ¿ä°¡ ÀÖ½À´Ï´Ù.´Ï´Ù.
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Type
E (CHROMEL vs CONSTANTAN) ´Â »êÈ È¯¿ø ºÐÀ§±â¿¡¼ »ç¿ëÀÌ °¡´ÉÇÏ°í Áø°ø¿¡¼´Â
¾à°£ÀÇ ½Ã°£ µ¿¾È¸¸»ç¿ëÀÌ °¡´É ÇÕ´Ï´Ù. »êÈ, Ȳ ºÐÀ§±â ¿¡¼´Â º¸È£°üÀ» »ç¿ë ÇÏ¿©¾ß ÇÕ´Ï´Ù. Ư¡Àº
°¢ Thermocouple typeÁß ¿Âµµ¿¡ ´ëÇÏ¿© °¡Àå ³ôÀº EMF °ªÀÌ ³ªÅ¸³³´Ï´Ù. |
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Type K (CHROMELTM vs ALUMELTM) ´Â »êÈ,ºñÈ°¼º,ȯ¿ø ºÐÀ§±â¿¡¼ »ç¿ëÀÌ
°¡´É ÇÕ´Ï´Ù. Ȳ, »êÈ ºÐÀ§±â ¿¡¼´Â ºÎ½ÄµÉ ¿°·Á°¡ Å©¹Ç·Î º¸È£°üÀÌ ÇÊ¿äÇÕ´Ï´Ù. (TM Hoskins
Mfg Co.)
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Type
N (NICROSIL vs NISIL) ´Â »êÈ, ºñÈ°¼º ȯ¿ø ºÐÀ§±â ¿¡¼ »ç¿ëÀÌ °¡´É ÇÕ´Ï´Ù.
Ȳ ºÐÀ§±â¿¡¼´Â ¹Ýµå½Ã º¸È£°üÀÌ ÇÊ¿äÇÕ´Ï´Ù.°í¿Â¿¡¼ ¾ÈÁ¤¼º°ú Á¤È®¼ºÀ» º¸¿©ÁÝ´Ï´Ù.
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Fibrous Insulation,
(¼¶À¯¼º Àý¿¬ÀçÁú)
¹°±â ¶Ç´Â ½À±â ħÅõ¼ºÀÇ ¿°·Á°¡ ¾ø´Â ȯ°æ¿¡ ¾ºÀÏ ¼ö ÀÖ½À´Ï´Ù.
Á¾·ù¿¡´Â Fiber glass , Silica fiber, Ceramic fiber °¡ ÀÖ½À´Ï´Ù.
Max temp: Fiber glass : 482¡ÆC
Silica fiber : 780¡ÆC
Ceramic fiber : 1315¡ÆC
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Type
B (PLATINUM-30%RHODIUM vs PLATINUM-6%RHODIUM)
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Type S (PLATINUM-10%RHODIUM vs PLATINUM)
Type R (PLATINUM-13%RHODIUM vs PLATINUM)
±Í±Ý¼Ó thermocouplesÀº ºñÈ°¼º, »êÈ ºÐÀ§±â¿¡¼ »ç¿ë ÇÒ ¼ö ÀÖ°í °¡Àå ÃßõÇÒ ¸¸ÇÑ
Type ÀÔ´Ï´Ù.
Áø°ø¿¡¼´Â Àá½Ã
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Plastic
Insulation, (plastic Àý¿¬ÀçÁú)
ºñ±³Àû ³·Àº ¿Âµµ¿¡¼ »ç¿ëÀÌ °¡´ÉÇÏ°í ½À±â°¡ ¸¹Àº °÷¿¡ »ç¿ëÇÒ ¼ö ÀÖ½À´Ï´Ù.
Á¾·ù´Â PVC, Teflon Silicon rubber °¡ ÀÖ½À´Ï´Ù.
Max temp: PVC : 104¡ÆC
Teflon, Silicon rubber : 260¡ÆC
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Type
C^ (TUNGSTEN 5% RHENIUM vs TUNGSTEN 26% RHENIUM)
C type Tungsten alloy thermocouples Àº Áø°ø °í¼øµµ ¼ö¼Ò ¶Ç´Â ºñÈ°¼º
ºÐÀ§±â ¿¡¼ °¡Àå ÀûÇÕÇÑ Type ÀÔ´Ï´Ù.
»êÈ ºÐÀ§±â ¿¡¼´Â ´ë´ÜÈ÷ ¾àÇÕ´Ï´Ù. (^Not ANSI/ASTM symbol)
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WIRING
ELECTRONIC INSTRUMENTS to conform to national and
local codes does not address the "noise"
problems of electronic instruments. Shielding of thermocouple
and thermocouple extension wire may be necessary but not
the only requirement of reducing noise. Ever since the
introduction of electronics into instruments, noise generated
by external relays, switches, motors, phase fired thyristors,
etc., have caused problems that interfere with the instrument's
operation. Now that microprocessors are being increasingly
incorporated into many more varied instruments, external
sources that generate noise pulses that, in some cases,
may render the instrument completely inoperative, have
become crucial to instrument applications. While much
can be done within the instrument to reduce its sensitivity
to external noise, the solution in many cases can only
be resolved by supressing the noise generation at its
source. |
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