¹ÉƱ´úÂ룺002819

½â¾ö¹æ»®

×÷ΪרһÓÚµç×Ó²âÊÔÕÉÁ¿ÁìÓòµÄ×ۺϷþÎñÉÌ£¬±ùÇòÍ»ÆÆ¹«Ë¾Õ¼ÓÐרҵ»¯ÓªÏú¼°¼¼Êõ·þÎñÍŶÓ£¬Æ¾½è×ŶàÄêÀûÓü¯³ÉÐÐÒµ·þÎñ¾­Ñé£¬ÖØÒªÃæÏò¹úÄڸ߿ìÔö³¤µÄÕ½ÊõÐÂÐ˲úÒµ£¬Ìá¹©È«ÃæµÄ²âÊÔÀûÓÃϵͳ¼¯³ÉºÍרҵÕ÷ѯ·þÎñ¡£
µ±Ç°µØÎ»£º Ê×Ò³ > ½â¾ö¹æ»® > ÆäËû

ͨ¹ý×Ô¶¯Ð£×¼ACALÖ°ÄÜÌá¸ßDMMÕÉÁ¿µÄ²»±äÐԺ;«¶È

°ä²¼¹¦·ò£º2025-03-12 ä¯ÀÀÁ¿£º2143

Ò»¡¢Ê²Ã´ÊÇÊý×ÖÍòÓñíµÄ×Ô¶¯Ð£×¼£¿

 

×Ô¶¯Ð£×¼ (ACAL) ÊÇÖ¸É豸»òϵͳ×Ô¶¯½øÐÐ×ÔÎÒУ׼µÄÄÜÁ¦¡£ÀýÈ磬ÿ´ÎÆô¶¯´òÓ¡»úʱ£¬´òÓ¡»úͨ³£³ÇÊÐÖ´ÐÐÒ»´Î×ÔÎÒУ׼¡£ÕâÖÖÐ£×¼Éæ¼°ºÜ¶àÄÚ²¿´«¸ÐÆ÷ºÍ´òÓ¡Í·µØÎ»µÄÎïÀí²Î¿¼£¬ÒÔ±ã´òÓ¡»ú¿ÉÄܳ־ÃÕýÈ·´òÓ¡¡£

ͬÑù£¬µç×Ó²âÊÔºÍÕÉÁ¿ÒÇÆ÷£¨ÈçÊý×ÖÍòÓñí DMM£©Ò²±ØÒª½øÐÐ×ÔÎÒУ׼£¬ÒÔÈ·±£ÆäÕÉÁ¿Á˾ÖËæ×Ź¦·ò£¨Ô̺¬»·¾³Î¶ȱ䶯£©µÄÍÆÒÆÊ¼ÖÕÕýÈ·ÎÞÎó¡£

ʹÓĄ̃ʽ»òϵͳ DMM ½øÐо«È·ÕÉÁ¿¶Ô´óÎÞÊýÀûÓö¼ÖÁ¹Ø³ÁÒª¡£È»¶ø£¬Î¶ÈϵÊýÎó²îÊÇʱʱ±»ºöÊÓµÄÒ»µã¡£Î¶ÈϵÊýÎó²îµÄ¸ù»ùǰÌáÊÇ£¬ÈôÊÇÄúʹÓà DMM µÄζÅ×ëУ׼ÒÇÆ÷ʱµÄÎÂ¶È·ÖÆç£¬Ôò±ØÒªÔö³¤Îó²î£¬ÒÔ·´Ó³Î¶ÈϵÊý¹æ¸ñ¡£

´óÎÞÊý DMM ¶¼ÊÇÔÚοػ·¾³Ï½øÐÐУ׼µÄ£¬Î¶Èͨ³£Îª 23 °C¡£È»¶ø£¬ÏÖʵ»·¾³ÖÐµÄ DMM »áÓöµ½ÓëУ׼³¢ÊÔÊÒ·ÖÆçµÄζÈ¡£ÔĶÁ±¾ÎÄÄܹ»ÏàʶÏÖ´ú DMM ÈôºÎÔ®ÊÖÄú¸üÓ×»¯Î¶ÈϵÊý´øÀ´µÄÕÉÁ¿Îó²î¡£

 

DMM ×Ô¶¯Ð£×¼µÄÀûÒæ£º

  • Ï÷¼õÒò»·¾³Î¶ȱ䶯Ôì³ÉµÄÖ±Á÷µçÁ÷¡¢Ö±Á÷µçѹºÍµç×èÕÉÁ¿Îó²î¡£
  • Ï÷¼õËæ¹¦·ò±ä¶¯µÄÕÉÁ¿Æ¯ÒÆ£¬ÌṩÕûÌå²»±äÐÔºÍÕýÈ·ÐÔ¡£

 

¶þ¡¢ACAL ÈôºÎÌá¸ßÕÉÁ¿²»±äÐÔºÍÕýÈ·ÐÔ£¿

 

DMM ×Ô¶¯Ð£×¼Ö°ÄܵÄÖ÷ÕÅÊÇÏ÷¼õÎÂ¶ÈÆ¯ÒÆÎó²îºÍÄÚ²¿Æ¯ÒÆÎó²î¡£ÀýÈ磬ÔÚÓµÓÐ×Ô¶¯Ð£×¼Ö°ÄÜµÄ DMM ÖУ¬ÄÚÖÃζȻù×¼»á¸ú×Ù DMM µÄУ׼ζÈ¡£Ëü»á×Ô¶¯Ïàʶµ±Ç°Î¶ȡ¢Ð£×¼ºÍζȱ䶯¡£

 

ͼ1ÊÇ DMM ×Ô¶¯Ð£×¼ºÍ¾ßÌåÐÅÏ¢ÆÁÄ»µÄʾÀý¡£

DMM µÄ×Ô¶¯Ð£×¼ÆÁÄ»
ͼ 1. DMM µÄ×Ô¶¯Ð£×¼ÆÁÄ»

ÄúÄܹ»Í¨¹ýÇ°Ãæ°åÉϵİ´Å¥»òSCPI±à³ÌºÅÁîһʱʹÓÃ×Ô¶¯Ð£×¼Ö°ÄÜ£¬Ò²Äܹ»Ê¹Óà SCPI ±à³ÌºÅÁÆÚÖ´ÐÐ×Ô¶¯Ð£×¼£¬ÒÔÊÊÓ¦ÄúµÄ²âÊÔ»·¾³¡£±ÈÁ¦ºÃµÄ×ö·¨ÊÇÖÁÉÙÿ 24 Ó×ʱִÐÐÒ»´Î×Ô¶¯Ð£×¼£¬ÒÔ¾¡Á¿Ï÷¼õÎÂ¶ÈÆ¯ÒÆÔì³ÉµÄÎó²î¡£ÔÚ³ö²ú²âÊÔ°à´ÎÆðͷ֮ǰִÐÐ×Ô¶¯Ð£×¼¡£

 

ͼ2ÏÔʾÁËÒ»¸ö 7.5 λÊý×ÖÍòÓñí×Ô¶¯Ð£×¼ (ACAL) ºÍ²»×Ô¶¯Ð£×¼ (ACAL) µÄÖ±Á÷µçѹ¹æ¸ñ°µÊ¾Àý¡£¾«¶È¹æ¸ñµ¥ÔªÎª ±£¨¶ÁÊý°Ù·Ö±È + Á¿³Ì°Ù·Ö±È£©¡£

A À¸ - ÏÔʾ DMM µÄ¶à¸öÖ±Á÷µçѹÁ¿³Ì¡£
B À¸ - ÏÔʾֱÁ÷µçѹ¾«¶È¹æ¸ñºÍÏà¶ÔÓÚУ׼³ß¶ÈµÄʱÏÞ¡£
C À¸ - ÏÔʾÉÏ´Î ACAL ± 2 °C ÒÔ±íÿ °C µÄ¸Ô¶×ãó²î¡£ÈôÊDz»Ê¹ÓÃ×Ô¶¯Ð£×¼£¬ÇëʹÓôËÀ¸¡£
D À¸ - ÏÔʾ ACAL ± 2 °C ÒÔ±í¸÷ °C µÄ¸Ô¶×ãó²î¡£ÈôÊÇʹÓÃ×Ô¶¯Ð£×¼£¬ÇëʹÓôËÀ¸¡£

7.5 λÊý×ÖÍòÓñíµÄÖ±Á÷µçѹ¹æ¸ñ°µÊ¾Àý
ͼ 2. 7.5 λÊý×ÖÍòÓñíµÄÖ±Á÷µçѹ¹æ¸ñ°µÊ¾Àý

ÈôÊÇÄúÏëÓà7.5 λÊý×ÖÍòÓñíÕÉÁ¿ 10 V Á¿³ÌÉ쵀 9 V µçѹ£¬ÕâÁ½ÖÖÇé¿öϵÄÖ±Á÷µçѹ¾«¶ÈÈçͼ2ÖеĹæ¸ñ±íËùʾ¡£

Çé¿ö 1£º²»ÔÚ DMM ÖÐʹÓà ACAL
±£ÕϾ«¶È¿É²Î¿¼ 10 V Á¿³ÌÏÂ1ÄêÆÚ¾«¶È¹æ¸ñ¡£ÍÆËãÁ˾ÖÀ´×Ô B À¸£¨À¶É«£©ÖеÄÎó²î£¬¼ÓÉÏ C À¸£¨³ÈÉ«£©ÖÐ×îºóÒ»´Î ACAL ± 2 °C ÒÔ±íÿ °C µÄÎó²î¡£

Çé¿ö 2£º½« ACAL Óë DMM ½áºÏʹÓÃ
±£ÕϾ«¶È¿É²Î¿¼ 10 V Á¿³ÌÏÂ1ÄêÆÚ¾«¶È¹æ¸ñ¡£ÍÆËãÁ˾ÖÀ´×Ô B À¸£¨À¶É«£©µÄÎó²î£¬¼ÓÉÏ D À¸£¨ÂÌÉ«£©Öг¬³ö ACAL ± 2 °C µÄÿ¸ö °C µÄÎó²î¡£

ÀýÈ磬ÈÃÎÒÃÇÍÆËãÒ»ÏÂͼ 2 ÖÐ 7.5 λ DMM µÄ 1 Äê»ù×¼¾«¶È£º
1 Äê»ù×¼¾«¶È = 9 * 0.0016% + 10 * 0.0002% = 0.000144 + 0.00002 = 0.000164 V (0.164 mV)
1 Äê»ù×¼¾«¶ÈʹÓÃͼ 2 ÖÐµÄ 7.5 λ DMM - 9 V ± 0.164 mV
ÈôÊÇÑ¡ÔñÏñÇé¿ö1ÄÇÑùÌø¹ý ACAL ²½Ö裬ÔòζÈϵÊýÎó²îµÄÒýÈë²Î¿¼·Ç ACAL ÁС£ÔÚ TCAL ± 2 ?C Ö®±íµÄÿÉãÊ϶È£¬Äú½«Ôö³¤ÒÔÏÂÖµ£º
9 V * 0.0005% + 10 V * 0.0001% = 0.000045 V + 0.00001 V = 0.000055 V (0.055 mV)
»ù×¼¹æ¸ñºÏÓÃÓÚ 22 ?C + 2 ?C = 24 ?C¡£ÓÉÓÚ±ùÇòÍ»ÆÆ¹¤×÷ζÈΪ 40 ?C£¬Òò¶ø±ØÒª½«Î¶ÈϵÊý³ËÒÔ 16 ?C£¨40 ?C-24 ?C = 16 ?C£©¡£
×îÖÕÍÆËãÁ˾ÖΪ
9 V ± (0.000164 + 16 * 0.000055) = 9 V ± 0.00104V (1.04 mV)
ζÈϵÊýÎó²î½«µçѹÕÉÁ¿Îó²îÔö³¤µ½ 1.04 mV - ÕâÊÇÔ­¹æ¸ñµÄ 600%¡£

ÈôÊÇÑ¡ÔñÇé¿ö 2£¬ÔòÄܹ»Í¨¹ý ACAL ´ó´ó½µµÍζÈϵÊýÎó²î¡£Í¨¹ýÔÚ¾«È·ÕÉÁ¿Ç°²»¾ÃÖ´ÐÐ ACAL£¬Í¨³£Äܹ»ÒÔΪζȱ䶯²»»á³¬¹ý 2 ?C¡£
ʹÓôøÓРACAL ¹æ¸ñµÄÐÂζÈÎó²îÁУ¬´Ë¿ÌµÄζÈÎó²îΪ
9 V * 0.0001% + 10 V * 0.0001% = 0.000009 V + 0.00001 V = 0.000019 V (0.019 mV) ³ËÒÔ 16 ¶È£¬¼´
9 V ± (0.000164 + 16 * 0.000019) = 9 V ± 0.000468 V (0.468 mV)
ʹÓàACAL µÄ×ÜÌ徫¶ÈÔ¶¸ßÓÚ²»Ê¹Óà ACAL µÄ¹æ¸ñ£¬¾«¶ÈÌá¸ßÁË 285%£¬±È²»Ê¹Óà ACAL µÄ DMM ¹æ¸ñ¸üÕýÈ·¡£

 

ͼ 3 ÊÇ 7.5 λ DMM µÄÌáÒª£¬ÒÔ¼°´ò¿ªºÍδ´ò¿ª ACAL ʱµÄ¾«¶Èˮƽ¡£Ê¾ÀýÔÚ 10 V Á¿³ÌÉÏÕÉÁ¿ 9 V£¬Ð£×¼Î¶ÈΪ 22 ?C£¬¹¤×÷ζÈΪ 40 ?C¡£

Model Input voltage / range Base spec at 22 °C Spec with TC at 40 °C Spec with TC and ACAL at 40 °C
7.5-digit DMM 9 V
10 V range
± 164 μV ± 1044 μV ± 468 μV

ͼ 3. ʹÓúͲ»Ê¹ÓÃ×Ô¶¯Ð£×¼µÄ DMM ¾«¶È±ÈÁ¦

 

Èý¡¢ºÎʱ±ØÒªÊ¹ÓÃ×Ô¶¯Ð£×¼Ö°ÄÜ£¿

 

  1. ÔÚζȶà±äµÄ³¢ÊÔÊÒ½øÐи߻îÂç¶È¡¢¸ß¾«¶ÈÕÉÁ¿Ê±Ê¹ÓÃ×Ô¶¯Ð£×¼Ö°ÄÜ¡£
    Äúµ±È»µ«Ô¸Ê¹ÓàDMM ½øÐи߻îÂç¶ÈÕÉÁ¿µÄͬʱ×î´óÏ޶ȵØÌá¸ß¾«¶È¡£È»¶ø£¬³¢ÊÔÊÒµÄζÈÔÚÒ»ÌìÖ®ÄÚ¿ÉÄÜ»áÓм¸¶ÈµÄ±ä¶¯¡£ÕâÖÖζȱ䶯»áÖ±½ÓÓ°ÏìÕÉÁ¿µÄÕýÈ·ÐÔ£¬²¢¿ÉÄÜÓ°ÏìÊý¾ÝµÄÖÊÁ¿¡£ÈôÊdz¢ÊÔÊҵŤ×÷ζÅ×ëУ׼ DMM ʱµÄÎÂ¶È·ÖÆç£¬Çé¿ö¾Í¸üÊÇÈç´Ë¡£
  2. µ±ÏµÍ³ÄÚ²¿Î¶ȸßÓÚ»·¾³Î¶Èʱ£¬ÈôºÎ½øÐРDMM »ú¼Ü¶ËÕÉÁ¿¡£
    ÄúÒѽ« DMM ¸éÖÃÔÚ»ú¼ÜÖУ¬²¢½ÚÔìÁËÆøÁ÷ºÍÎÂ¶È¼à¿Ø£¨Í¼ 4£©¡£¼´±ã²ÉÈ¡ÁËÕâЩԤ·À´ëÊ©£¬ÓÉÓÚϵͳÖл¹ÓÐÆäËûÒÇÆ÷£¬ÏµÍ³ÄÚ²¿Î¶ÈÈԱȻ·¾³ÎÂ¶È¸ß 15 °C¡£ÓÉÓÚζÈÉý¸ßÁË 15 ¶È£¬ÄúµÄ DMM ¶ÁÊý¹æ¸ñ´Ë¿Ì¸ßÓÚζÈϵÊýµÄÉè¼Æ¹«²î¡£ACAL Äܹ»Ï÷¼õÄúµÄζÈϵÊýÎó²î£¬Ô®ÊÖÄúÂú×ã DMM ÕÉÁ¿µÄ¹æ¸ñÔ¤Ëã¡£

ͨ¹ý×Ô¶¯Ð£×¼ACALÖ°ÄÜÌá¸ßDMMÕÉÁ¿µÄ²»±äÐԺ;«¶È

 

½áÂÛ

 

DMM µÄ¹¤×÷ζȻáÓ°Ïì¶ÁÊýµÄÕýÈ·ÐÔ¡£ÓµÓÐ ACAL Ö°ÄÜµÄ DMM Äܹ»´ó´ó½µµÍζÈϵÊýÎó²î¡£ACAL µÄ²Ù×÷¹¦·ò²»µ½ 20 Ã룬ÄúÄܹ»Ê±Ê±Ö´ÐÐÕâÏ×÷£¬ÒÔÈ·±£¸ü¼Ñ¾«¶È¡£

Ŀǰ£¬Ö§³ÖACAL×Ô¶¯Ð£×¼Ö°ÄܵÄDMM²úÆ·Ô̺¬6.5λDMM 34465A¡¢7.5λDMM 34470AÒÔ¼°ÎÒÃÇ8.5 λ DMM³£ÇàÊ÷3458A£¬ËüÃÇÄܹ»Ô®ÊÖÄúÔÚ´æÔÚζÈÎó²îµÄÇé¿öÏÂÈ·±£¶ÁÊýÕýÈ·¡£

p-002

ÐÄÖÐÓÐÒÉ»ó¾ÍÎÊÎÊÂò¹ý´ËÉÌÆ·µÄͬѧ°É¡«

ÎÒÒªÌáÎÊ

×îÐÂÉϼÜ

¸ü¶à

ÌáÎÊ

ÄúµÄÎÊÌâ½«ÍÆË͸øÒѹºÓû§£¬TAÃÇ»áÖúÄú½â´ð

È¡µÞ
±ùÇòÍ»ÆÆ ¹ÉƱ´úÂ룺002819
½¡ÍüÃÜÂë?
½¡ÍüÃÜÂë?
±ùÇòÍ»ÆÆ ¹ÉƱ´úÂ룺002819

Õ˺Å×¢²á

±ùÇòÍ»ÆÆ ¹ÉƱ´úÂ룺002819

³ÁÖÃÃÜÂë

¡¾ÍøÕ¾µØÍ¼¡¿