Re: Contact Thermometer for Component Temperature

D from BC wrote:
On Wed, 13 Feb 2008 17:22:02 -0800 (PST), eyezkubed@xxxxxxxxx wrote:

On Feb 13, 4:54 pm, D from BC <myrealaddr...@xxxxxxxxx> wrote:
I've been looking around and haven't found it yet..

Where can I find a small temperature sensor on a long probe (like a
scope probe) to measure the temperature on 8pin SOIC chips and 1206
resistors?
The probe plugs in a DMM or similar readout.

Or do I get the E*bay rectal thermometer? :P
What a pita...

D from BC
British Columbia
Canada.
for things that small I'd either use non-contact sensing or a very
tiny thermocouple bead and silver paint such as in those pcb repair
pens. a the rectal probe would act as a heatsink and defeat the
purpose.

al

k..Contact may suck but what's available in non-contact that can focus
on the heat from a 1206 resistor on a high density pcb?

That's a simple matter of optics. I think the more difficult
problem is knowing where it's pointed without using a heat-generating
device.

Might be worth experimenting with a "funnel" Poke the small end down
on the part and see if you can make some calibration curves for a
bigger IR probe. You've already got calibration problems setting
emissivity for IR probes.
Back in the day, I heard that you could use spray-on foot powder to
normalize emissivity across a board. Tried it. WORKED GREAT!!
Problem was that I couldn't wash the stuff off.

You really have to glue contact probes on if you expect anything
resembling repeatability.

Or just bite the bullet and call up Flir. I'm sure they can fix
you right up.


For contact..
I did find a bead.
P60 1.5mm diameter
http://www.thermometrics.com/assets/images/p606585.pdf

RTD in 0603 is interesting.
http://media.digikey.com/PDF/Data%20Sheets/Vishay%20Intertechnology%20General%20PDFs/PTS%20Series.pdf
It's platinum! :)

Thermistors go as small as 0201.
http://www.panasonic.com/industrial/components/pdf/arg0000ce1.pdf


D from BC
British Columbia
Canada.


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