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  • Author Author: Matt
  • Date Created: 6 Feb 2020 3:40 PM Date Created
  • Last Updated Last Updated: 12 Feb 2020 8:24 AM
  • Views 2871 views
  • Likes 12 likes
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Thermal Tools for Circuits -- Workbench Wednesdays 20

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Thermal Tools for Circuits

element14 Presents  |  Bald Engineer: James Lewis' VCP Profile |  Workbench Wednesdays

 

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Measuring the effectiveness of a heatsink or the thermal load of a CPU requires thermal test tools. In this episode, learn how an IR Thermometer and a Thermocouple could be used on an electronics workbench. Many multimeters (DMMs) include the ability to measure temperature with a K-type thermocouple. See examples of when each measurement could be used.

 

Supplemental Material:

 

  • Infrared thermometer by kk99
  • "No lies" IR Thermometer - part I by koudelad
  • SmartiPi NoIR Grid Eye Thermal Camera by ninjatrent
  • Grounded vs Ungrounded: Choosing the right thermocouple explained by fpaytas
  • Temperature Experiments with Thermocouples by shabaz

 

Bill of Material:

 

Product NameManufacturerQuantityBuy KitBuy Kit
MP7300256 Handheld DMM with BluetoothMulticomp Pro1Buy NowBuy Now
72-873272-8732 IR ThermometerTenma1Buy NowBuy Now
MP730028 US Bench DMM, 5.5 DigitsMulticomp Pro1Buy NowBuy Now
Raspberry Pi 4Raspberry Pi1Buy NowBuy Now
  • k-type
  • ir thermometer
  • e14presents_baldengineer
  • thermocouple
  • workbench wednesday
  • k-type thermocouple
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Top Comments

  • beacon_dave
    beacon_dave over 5 years ago +3
    The issue of emissivity of different materials presumably causes an issue with interpreting data from thermal cameras which are often observed being used to measure the temperature of multiple objects…
  • rickseiden
    rickseiden over 5 years ago +2
    I was just looking at these yesterday. I saw the "guns" running from $10 to $100. If you're only using one occasionally, can you get away with something on the cheaper side? I saw the one you demoed was…
  • DAB
    DAB over 5 years ago +2
    Nice overview of the subject. There is a lot more to thermal measurement and what it really means, but for your purpose, you did good. DAB
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  • DAB
    DAB over 5 years ago

    Nice overview of the subject.

     

    There is a lot more to thermal measurement and what it really means, but for your purpose, you did good.

     

    DAB

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  • baldengineer
    baldengineer over 5 years ago in reply to DAB

    Thanks, DAB. I did debate with myself on how far to take the video. The two key things I wanted to get across are that: IR sensors are affected by the permissivity and that thermocouples (usually) need physical contact.

     

    I've run into too many people who don't understand those two things and then wonder why their measurements are off.

     

    I think to go deeper on making measurements with either method would require a dedicated video on each. Otherwise, it gets confusing.

     

    I'd love to hear if you have suggestions or comments on using a thermocouple. It is the measurement I do most often, so I'd like to make sure I'm doing it right. image

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  • baldengineer
    baldengineer over 5 years ago in reply to DAB

    Thanks, DAB. I did debate with myself on how far to take the video. The two key things I wanted to get across are that: IR sensors are affected by the permissivity and that thermocouples (usually) need physical contact.

     

    I've run into too many people who don't understand those two things and then wonder why their measurements are off.

     

    I think to go deeper on making measurements with either method would require a dedicated video on each. Otherwise, it gets confusing.

     

    I'd love to hear if you have suggestions or comments on using a thermocouple. It is the measurement I do most often, so I'd like to make sure I'm doing it right. image

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  • DAB
    DAB over 5 years ago in reply to baldengineer

    Yes, thermocouple measurement can be a life time pursuit.

    I did my last work with them about 40 years ago, so I am probably a bit out of touch with current capabilities.

     

    You would probably like my write up on IR in my book "Reverse Engineering the Universe" just be aware that I am proposing some subatomic physics ideas that are considered heresy by mainstream scientist.

    Plus I urinate on Planck's Radiation Law and I use IR photons as my proof.

     

    DAB

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