Small Spot Size Infrared Thermometers
D from BC
they're probably all crap for measuring electronic component
temperatures..
So I googeegagagoogled and found:
http://www.thermoworks.com/products/ir/cf_ir.html
0.1 inch 2.5mm spot size..Close focus infrared thermometer.
||< that's about 2.5mm. About a 1206 resistor.
Neato...dual laser..Can blind both eyes :P
Stopwatch!
I can write down "Circuit blew up at 220C in 10:23 minutes.."
$159 and they say
"You won’t find a comparable close focusing IR unit for under $200."
True???
Anybody own one of these? Any good?
D from BC
myrealaddress(at)comic(dot)com
BC, Canada
mi...@sushi.com
I think the fact they have a NIST certificate is a good sign.
D from BC
Here's what I find odd..
On
http://www.thermoworks.com/contact.html
Where's the engineer(s) picture?
I suppose the IR thermometer design was an outside contract.
jo...@jjdesigns.fsnet.co.uk
D from BC wrote:
> After seeing a bizzillion IR thermometers on E*bay, I quickly assumed
> they're probably all crap for measuring electronic component
> temperatures..
[...]
No way!. The 'normal' one I bought off Ebay is truly the dogs
bollocks. I love it :).
'Sweet spot' size may be large (about 1/2", equiv to TO-220 packages)
but can scan kit from a couple of foot away and not miss hot spots.
Needs a minimum of 12:1 for the aperture ratio. Fluke do one at about
30:1 but costs a fortune.
Jim Thompson
Engineers are expendable ;-)
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine Sometimes I even put it in the food
D from BC
D from BC
I'll wear a bag over my head for the next project.
I'll call myself 'The Unknown Engineer'
Based on 'The Unknown Comic'
http://www.youtube.com/watch?v=3WzOwBDKG7I
Rich Webb
wrote:
>After seeing a bizzillion IR thermometers on E*bay, I quickly assumed
>they're probably all crap for measuring electronic component
>temperatures..
>
>So I googeegagagoogled and found:
>
>http://www.thermoworks.com/products/ir/cf_ir.html
>
>0.1 inch 2.5mm spot size..Close focus infrared thermometer.
> ||< that's about 2.5mm. About a 1206 resistor.
>
>Neato...dual laser..Can blind both eyes :P
>
>Stopwatch!
>I can write down "Circuit blew up at 220C in 10:23 minutes.."
>
>$159 and they say
>"You won’t find a comparable close focusing IR unit for under $200."
You might consider this one: <http://www.tequipment.net/TPI368.asp>
It seems to work well for "component" temperatures and the price is
right. Pros: reasonably accurate, results agreed with thermistors when
both were available; small; works well up close to components; cheap;
battery lasts forever (so far). Cons: emissivity fixed at 0.95.
--
Rich Webb Norfolk, VA
D from BC
<OneBi...@InfiniteSeries.Org> wrote:
>On Mon, 02 Feb 2009 15:49:45 -0800, D from BC <myreal...@comic.com>
>wrote:
>
> Yeah. It looks like they are merely distributing an item made
>elsewhere.
>
> The item, however is nice, and the price is OK, considering that most I
>have seen do not have point focus, NOR do most have real emissivity
>settings capacity.
>
> This looks to be a good buy, and the $35 calibration fee is OK too from
>my past IR experience, which was with an actual IR instrument maker that
>had devices which were several thousand dollars each.
>
> Most current jobs have a fresnel lens. For this to work, it likely has
>real optics.
>
> Nice find, I may do some hunting for a better, similar product, but the
>LCD readout, and the dollar numbers make this one look pretty good.
>
> The emissivity adjustment alone makes it worth it, when I have seen
>them at this price with less features.
Cool..thanks for the feedback..
I'll probably order one.
D from BC
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=290-1901-ND
$33.11 Can at Digikey. <Cheap!
Close focus 0.125". Not bad.
Only goes to 120C. Good enough.
Oh mannn!...It doesn't have dual lasers :(
Ughhhh.
That's like a muscle car without mag wheels. :P
That's like an operation without the machine that goes 'beep'.
No dual lasers...ohhhh..
The lasers greatly increase the 'check out my new gizmo' factor.
D from BC
<OneBi...@InfiniteSeries.Org> wrote:
>On Mon, 02 Feb 2009 18:30:06 -0800, Archimedes' Lever
><OneBi...@InfiniteSeries.Org> wrote:
>
>>On Mon, 02 Feb 2009 15:49:45 -0800, D from BC <myreal...@comic.com>
>>wrote:
>>
>> Yeah. It looks like they are merely distributing an item made
>>elsewhere.
>>
>> The item, however is nice, and the price is OK, considering that most I
>>have seen do not have point focus, NOR do most have real emissivity
>>settings capacity.
>>
>> This looks to be a good buy, and the $35 calibration fee is OK too from
>>my past IR experience, which was with an actual IR instrument maker that
>>had devices which were several thousand dollars each.
>>
>> Most current jobs have a fresnel lens. For this to work, it likely has
>>real optics.
>>
>> Nice find, I may do some hunting for a better, similar product, but the
>>LCD readout, and the dollar numbers make this one look pretty good.
>>
>> The emissivity adjustment alone makes it worth it, when I have seen
>>them at this price with less features.
>
>
> I take it back. Upon further examination of the specs, I see that
>emissivity can only be adjusted from 0.95 up to 1.0 in 0.05 increments.
>
> It seems that it only adjusts in the top few points, unless I am
>reading it wrong.
It's worded '0.95 default;adjustable to 1 in 0.05 increments.'
Yeah..that's quirky wording.
Going from 0.95 to 1..Is that useful??
I'm guessing not,it has to be adjusted lower than 0.95 for bare
metals...If it can..
I'll find out..
Spehro Pefhany
Oh, they're just a distributor/importer by the looks of it. Buying
stuff from China/Taiwan with their name stuck on it, as well as
selling Raytek, Cal, Pelican and some other brand-name stuff.
The engineers are Asian.
Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
sp...@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com
Rich Webb
wrote:
Oh hell yes! If I didn't already have the little TPI sensor in my bag
I'd be seriously tempted. The lasers add at least 20 dB to the
credibility rating.
"Let me show you. See, *this* is where we have the heat problem." Dual
lasers lance out and pinpoint the offender! Heads nod all around the
room. ;-)
D from BC
<bbe...@mapson.nozirev.ten> wrote:
Lasers and ...flame graphics on the thermometer! Like:
http://lifeintheklane.files.wordpress.com/2008/02/hot-rod.jpg
Oh yeah.. :)
D from BC
Ah...
Everybody is white at Thermoworks..
I think it would be funny if at the bottom of
http://www.thermoworks.com/contact.html
there was this picture
http://www.accentexpert.com/hearz%2Bind.jpg
'Ling and Yang'
Mechanical Engineer and Electronics Engineer
and then add
'American engineering sucks noodles.' :P
D from BC
<OneBi...@InfiniteSeries.Org> wrote:
<snip>
>
> I get a feeling that it goes from 0.95 to 0.1.
>
> THAT would be useful, and is more akin to a proper instrument.
>
> I am going to contact them. If this is the case, the picture of the guy
>at the bottom of that page... That guy will get banged for his faulty web
>spec publishing. :-]
Since this thing has a small spot size, perhaps I could put a small
black dot of paint on metals and keep the setting at 0.95.
I wonder if I can measure the temperature of a glass of water..
Water emissivity = 0.67
Glass about 0.92
Do I point it at the glass or point it at the water??
D from BC
<OneBi...@InfiniteSeries.Org> wrote:
>On Wed, 04 Feb 2009 22:39:39 -0800, D from BC <myreal...@comic.com>
>wrote:
>
>>On Mon, 02 Feb 2009 19:42:50 -0800, Archimedes' Lever
>><OneBi...@InfiniteSeries.Org> wrote:
>>
>><snip>
>>>
>>> I get a feeling that it goes from 0.95 to 0.1.
>>>
>>> THAT would be useful, and is more akin to a proper instrument.
>>>
>>> I am going to contact them. If this is the case, the picture of the guy
>>>at the bottom of that page... That guy will get banged for his faulty web
>>>spec publishing. :-]
>>
>>
>>Since this thing has a small spot size, perhaps I could put a small
>>black dot of paint on metals and keep the setting at 0.95.
>>
>
> Matte black... fine matte. ;-)
>
>
>>I wonder if I can measure the temperature of a glass of water..
>>Water emissivity = 0.67
>>Glass about 0.92
>
> You can take readings and apply the math yourself to obtain the correct
>value from the 0.95 setting (or 1.0).
>
>
>>Do I point it at the glass or point it at the water??
>
> You need to have a specific window of spectral response to see through
>glass properly, so not that way... You would point at the water at about
>1 to 3 degrees off perpendicular.
Neato..
Looks like this sort of thing gets technical enough to seek out a book
on infrared temperature measurement.