[sdiy] Circuit thermometer / temperature measurement

Richie Burnett rburnett at richieburnett.co.uk
Tue Feb 17 20:15:17 CET 2015


When I used to do power electronics work, I used to use a thermocouple meter and a bunch of those small bead thermocouples (j or k type, I forget now). The thermocouple beads are about 1mm diameter so you can stick them onto whatever chips and transistors you want to measure the temperature of. A tiny spot of heatsink compound helps ensure low thermal resistance and an accurate measurement.

Just be careful if you stick them on anything that is mains live!

-Richie, 

Sent from my Xperia SP on O2

---- Jacob Watters wrote ----

>I think it was in the EEVlog that I saw a FIR camera being used. I
>don't know how accurate that is, but it seemed quick and convenient.
>
>On Tue, Feb 17, 2015 at 1:46 PM, Justin Owen <juzowen at gmail.com> wrote:
>> Hello,
>>
>> Anyone recommend a reasonable thermometer for measuring the operating temperature of PCBs and surface mount parts in-circuit?
>>
>> I recently bought  a fairly cheap (<5.00) pen type food thermometer but a) for accurate readings it needs to be actually stuck in the food - which isn't entirely convenient for PCB parts and b) even immersed in liquids it's very slow to hit the required reading.
>>
>> Any thoughts?
>>
>> Thanks,
>>
>> - J
>>
>>
>>
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