Termojuftni kompensatsiya qilish uchun tavsiya etilgan uzunlik odatda 100 metrdan oshmaydi. Buning asosiy sababi signalning zaiflashishiga va sovuq ulanish harorati gradientidagi muvozanatga olib kelishi mumkin bo'lgan haddan tashqari qo'rg'oshin qarshiligiga yo'l qo'ymaslikdir, bu esa haroratni o'lchash aniqligiga ta'sir qiladi.
Specific adjustments should be made based on the application scenario: For typical industrial scenarios (such as normal temperature and short-to-medium distance transmission), a length of 50-100 meters is recommended. This range balances signal transmission stability with installation costs. For ultra-long distances (e.g., exceeding 100 meters), thicker core compensating leads (to reduce resistance) or shielded dedicated leads should be used, along with a low-input-impedance temperature measuring instrument to minimize signal loss. In high-temperature environments (>200 daraja ) yoki kuchli elektromagnit shovqinli stsenariylar bo'lsa, uzunligi yanada qisqartirilishi kerak (tavsiya etiladi 50 metrdan kam yoki unga teng) va izolyatsiyaning qarishi yoki shovqin signalining superpozitsiyasini oldini olish uchun yaxshilangan issiqlik izolyatsiyasi va ekranlash amalga oshirilishi kerak.
Belgilangan uzunlikdan oshib ketish osongina quyidagi muammolarga olib kelishi mumkin:
① Termoelektrik potentsial signalning zaiflashishi, natijada o'lchangan qiymatlarning pasayishi;
② Supero'tkazuvchilar o'zining harorat gradientining oshishi, bu sovuq ulanishning kompensatsiya xatosi oshishiga olib keladi;
③ Ma'lumotlar barqarorligiga ta'sir qiluvchi kuchli elektromagnit muhitda shovqin signallariga nisbatan sezgirlikning oshishi. Amaliy qo'llanmalarda sozlash asboblar qo'llanmasi va termojuftni kalibrlash xususiyatlariga muvofiq, yakuniy standart sifatida barqaror o'lchov signallari bilan amalga oshirilishi kerak.
