# What are the advantages and disadvantages of thermocouple?

**URL:** <https://forumautomation.com/t/what-are-the-advantages-and-disadvantages-of-thermocouple/1297>\
**Category:** Temperature Measurement\
**Tags:** temperature, interviewquestions\
**Created:** [August 31, 2016, 3:47am UTC](https://forumautomation.com/t/what-are-the-advantages-and-disadvantages-of-thermocouple/1297 "2016-08-31T03:47:26Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![denizen](https://forumautomation.com/letter_avatar_proxy/v4/letter/d/848f3c/32.png) [@denizen](https://forumautomation.com/u/denizen)\
**Post date:** [August 31, 2016, 3:47am UTC](https://forumautomation.com/t/what-are-the-advantages-and-disadvantages-of-thermocouple/1297/1 "2016-08-31T03:47:26Z")

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**Advantages of Thermocouple**

1.Very wide temperature range (1.2 K to 2300 deg C) 2.Fast response time 3.Available in small sheath sizes 4.Low initial cost 5.Durable

**Disadvantages of Thermocouple**

1.Decreased accuracy comparing to RTD 2.More susceptible to RFI/EMI 3. Recalibration is difficult 4.Requires expensive TC wire from sensor to recording device 5.Difficult to verify 6.Not as stable as RTD

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**Author:** ![mohammed\_moin](https://forumautomation.com/user_avatar/forumautomation.com/mohammed_moin/32/3076_2.png) [@mohammed\_moin](https://forumautomation.com/u/mohammed_moin)\
**Post date:** [December 21, 2018, 1:27pm UTC](https://forumautomation.com/t/what-are-the-advantages-and-disadvantages-of-thermocouple/1297/2 "2018-12-21T13:27:57Z")

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EMI/RFI? What is the full form

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**Author:** ![carl\_e](https://forumautomation.com/letter_avatar_proxy/v4/letter/c/94ad74/32.png) [@carl\_e](https://forumautomation.com/u/carl_e)\
**Post date:** [December 24, 2018, 4:02am UTC](https://forumautomation.com/t/what-are-the-advantages-and-disadvantages-of-thermocouple/1297/3 "2018-12-24T04:02:30Z")

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A thermocouple measurement requires two temperature measurements: the hot junction measurement and the cold junction measurement. The reported temperature is the addition of the two measurements. Each has an accuracy uncertainty.

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**Author:** ![Sajid](https://forumautomation.com/user_avatar/forumautomation.com/sajid/32/3765_2.png) [@Sajid](https://forumautomation.com/u/Sajid)\
**Post date:** [December 24, 2018, 5:06am UTC](https://forumautomation.com/t/what-are-the-advantages-and-disadvantages-of-thermocouple/1297/4 "2018-12-24T05:06:21Z")

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Electromagnetic interference ( **EMI** ), also called radio-frequency interference ( **RFI** )