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4hv.org :: Forums :: Sale and Trade
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Laser/infra-red thermometers

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Alex M
Wed Jan 18 2012, 12:55AM Print
Alex M Registered Member #3943 Joined: Sun Jun 12 2011, 05:24PM
Location: The Shire, UK
Posts: 552
Hi, I was thinking of getting a laser/infrared thermometer for general electronics use and taking more accurate temperature readings of things like components and heat-sinks than just putting my hand on it and guessing.

Looking on amazon there seems to be quite a price difference between different brands with some costing around £15 and some upto £100. I was thinking of getting this one Link2 as (at-least in the UK) Rolson are an ok brand.

So my question is, is there a big difference between cheaper models and has anyone on here got one they can recommend? I don't need huge temperature measuring ranges and 100% accuracy for my uses.

Thanks.
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Sulaiman
Wed Jan 18 2012, 10:18AM
Sulaiman Registered Member #162 Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3140
We have IR thermometers at work but we rarely use them,
a dmm with a thermocouple is more reliable.
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Alex M
Wed Jan 18 2012, 03:27PM
Alex M Registered Member #3943 Joined: Sun Jun 12 2011, 05:24PM
Location: The Shire, UK
Posts: 552
Sulaiman wrote ...

We have IR thermometers at work but we rarely use them,
a dmm with a thermocouple is more reliable.

Thanks. So are they complete crap?

Don't multimeter temperature probes measure the surrounding area of the probe rather than just one spot like the infra-red ones do? As one of the reasons I was looking at them was to measure single spots/components on circuits.
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m4ge123
Wed Jan 18 2012, 03:38PM
m4ge123 Registered Member #4118 Joined: Mon Oct 03 2011, 04:50PM
Location: MD
Posts: 140
Actaully, DMM probes measure a spot and the infrared ones measure an area.
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Alex M
Wed Jan 18 2012, 03:41PM
Alex M Registered Member #3943 Joined: Sun Jun 12 2011, 05:24PM
Location: The Shire, UK
Posts: 552
m4ge123 wrote ...

Actually, DMM probes measure a spot and the infra-red ones measure an area.

Thanks. Wow I did not know this, I though it was the other way around!

Shame my multimeter does not have a temperature mode but I think my dads does, looks like I will have to "borrow" his cheesey (he only uses his for checking car and his motorbike battery voltages).
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