![Smart HART Interface and Monitor](img/him1.jpg)
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±â¼úÀÚ·á HART
Monitoring Devices
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HIM
(Smart HART
Loop Interface and Monitor) Àº ÇöÀå¿¡ Smart HART protocol À» Áö¿øÇÏ´Â
ÇöÀå°è±â·ùµé°ú Á÷Á¢ HART Åë½ÅÀ» ÇÏ¿© °ü·Ã ÇÁ·Î¼¼½º Á¤º¸¸¦ ¹ÞÀ» ¼ö
ÀÖ´Â ½ÅÈ£ º¯È¯±â ÀÔ´Ï´Ù. HART °è±â·ùµé, ¿¹¸¦ µé¸é 1)
Smart Temperature, Pressure, Level, and Flow Transmitters 2)
Smart Multivariable Transmitters 3) Smart Valves and Positioners µîÀ»
»ç¿ëÇÒ °æ¿ì À¯¿ëÇÏ°Ô Àû¿ëÇÒ ¼ö ÀÖ´Â Smart HART Loop Interface and
Monitor ÀÔ´Ï´Ù. ´ÙÀ½±×¸²¿¡
³ªÅ¸³½ °Íó·³, ±âÁ¸ ¿ÍÀ̾¿¡ º´¿·Î ¿¬°áÇÏ¿© HART variable 1,2,3,4
Ä¡¸¦ Àоî À̸¦ ÀÌ¿ëÇÏ¿© ÃÖ´ë 3°³ÀÇ 4-20mA ½ÅÈ£ ¹× ¾Ë¶÷Á¢Á¡ 2°³
Ãâ·ÂÀ» ³»º¸³¾ ¼ö ÀÖ´Â ¸ðµ¨°ú ÃÖ´ë 2°³ÀÇ MODBUS Ãâ·Â ¹× 1°³ÀÇ
4-20mA½ÅÈ£¸¦ ³»º¸³¾ ¼ö ÀÖ´Â ¸ðµ¨ÀÌ ÀÖ½À´Ï´Ù .![SPA HART application diagram](img/spa-hart.jpg) ¿¹¸¦
µé¾î, Multivariable Mass Flow meter¿¡¼´Â À¯·®º¸Á¤À» À§ÇÏ¿© Â÷¾Ð(DP),
¾Ð·Â(P), ¿Âµµ(T)µîÀÇ º¯¼ö¸¦ ÃøÁ¤ÇÏ¿© À̸¦ Raw FlowÄ¡¿¡ º¸»óÇÑ °á°úÄ¡¸¸À»
ÇÑ °³ÀÇ 4-20mA½ÅÈ£·Î Ãâ·ÂÇÕ´Ï´Ù¸¸, HIMÀ» ÀÌ¿ëÇϸé,
»ó±âÀÇ µ¥ÀÌÅÍ Áï Â÷¾Ð(DP), ¾Ð·Â(P), ¿Âµµ(T)µîÀÇ HART VariableÀ»
4-20mA·Î º¯È¯ÇÏ¿©(ÃÖ´ë 3 AO±îÁö) Ãâ·Â ½Ãų ¼ö ÀÖ½À´Ï´Ù. ¶ÇÇÑ
À̸¦ ÀÌ¿ëÇÏ¿© ¾Ë¶÷µîÀ» ÁöÁ¤ÇÒ ¼öµµ ÀÖ½À´Ï´Ù. (»ó±â¿¡¼´Â ¿Âµµ(T)°ª¿¡
¾Ë¶÷À» ¼³Á¤ÇÏ¿© Á¢Á¡½ÅÈ£¸¦ ³»º¸³»°í ÀÖ½À´Ï´Ù. ÀÌ·¸°Ô ¾Ë¶÷Àº ÃÖ´ë
2Á¢Á¡±îÁö °¡´ÉÇÕ´Ï´Ù. ¼û¾îÀÖ´Â HART º¯¼öÄ¡¸¦ È®ÀÎÇÒ ÇÊ¿ä°¡
Àְųª ·çÇÁ¸¦ °¨½ÃÇÏ¿©¾ß
ÇÑ´Ù¸é HIMÀÌ µµ¿Íµå¸³´Ï´Ù.
ÇöÀå¿¡ ½º¸¶Æ® ¹ëºê Æ÷½Ã¼Å³Ê¸¦
»ç¿ëÇÏ°í ÇØ´ç ¹ëºê°¡ Áß¿äÇÏ´Ù¸é HIMÀ» ¿¬°áÇÏ¿© ¹ëºêÀÇ »óŸ¦ Á¡°ËÇÒ
¼ö°¡ ÀÖ½À´Ï´Ù. ¢º Air Leakage / Lost Supply Air ¢º Stem Malfunction ¢º
Sticking ¢º Lost 4-20mA output from Controller ¢º High Temperature
![Clogging Valve - HART](img/clog_vlv.jpg) HIMÀ» º´¿·Î ¿¬°áÇϽøé HART½ÅÈ£¸¦
Àоî ÇÊ¿äÇÑ ÆĶó¸ÞÅ͸¦ ÀÌ¿ë ÃÖ´ë 2Á¢Á¡, 3 AO¸¦ Ãâ·ÂÇÒ ¼ö ÀÖ½À´Ï´Ù.
![HIM-SMART Valve application](img/him_vlv.jpg) º´¿·Î ¿¬°áµÇ¹Ç·Î ±âÁ¸ ¿ÍÀ̾À»
¼öÁ¤ÇÒÇÊ¿ä°¡ ¾ø°í, ·çÇÁ¿¡ ¹öµçµµ ÁÖÁö ¾ÊÀ¸¹Ç·Î ¼Õ½±°Ô ¼³Ä¡, ¿îÀüÀÌ
°¡´ÉÇÕ´Ï´Ù. ¡á
HART ÀÔ·Â
¡á Programmable Ãâ·Â (ÃÖ´ë 3AO ¹× 2Á¢Á¡
¶Ç´Â
2 Modbus + 1 AO)
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ÀÔ·Â
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HART |
Ãâ·Â
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AO : 4 - 20mA, 0-20mA
¶Ç´Â MODBUS 2Á¢Á¡
: SPDT
¸±·¹ÀÌ, 1 form C, 5A @250V non-inductive
1Á¢Á¡ : DPDT 2 form C, 5A @250V |
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Field
HART °è±â ¿ÀÂ÷¿¡ µû¸§ AO
Ãâ·Â : ±0.015%Span |
Isolation |
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500Vrms
Channel-to-Channel 1000Vrms
Case-Input-Output |
Ç¥½Ã
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2Line
LCD, 5 Alphanumeric display LED Lamp |
ÁÖº¯¿Âµµ: |
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-25~70µµ¾¾ |
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65
x 100 x 138mm |
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567
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