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Infrared Laser Thermometer. What One? #2824743
09/24/20 08:48 PM
09/24/20 08:48 PM
Joined: Jan 2003
Posts: 26,121
Mardi Gras-Land
340SIX Offline OP
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Just to check things like brake rotors, and things like that.i also have a dental oven I may use to powder coat small items.
So want one to do things like check trays lead fishing weights I will coat and cook etc

Re: Infrared Laser Thermometer. What One? [Re: 340SIX] #2824756
09/24/20 09:30 PM
09/24/20 09:30 PM
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WI
Dcuda69 Offline
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Originally Posted by 340SIX
Just to check things like brake rotors, and things like that.i also have a dental oven I may use to powder coat small items.
So want one to do things like check trays lead fishing weights I will coat and cook etc


All depends on temp range and how accurate you need it. I have a $10 Amazon special I use with my RC cars and a few other things around the house...works fine. I also have ones at work that we use to measure cat converter temps,etc.....cost a couple hundred bucks.

Re: Infrared Laser Thermometer. What One? [Re: Dcuda69] #2824763
09/24/20 09:44 PM
09/24/20 09:44 PM
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Re: Infrared Laser Thermometer. What One? [Re: 340SIX] #2824845
09/25/20 08:23 AM
09/25/20 08:23 AM
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Posts: 27,642
Irving, TX
feets Offline
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Irving, TX
Cheapest work as long as they are consistent. You don't use them for finding one or two degree differences. If you're trying to hit 400 degrees 395 to 405 is usually fine.
They're best suited for finding appreciable temp swings. Absolute accuracy takes a back seat to repeatability.


We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
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Re: Infrared Laser Thermometer. What One? [Re: feets] #2824851
09/25/20 09:02 AM
09/25/20 09:02 AM
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Ontario, Canada
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Stanton Offline
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You have to keep in mind that not all objects reflect the rays the same so depending what you're checking the reading can be off by some. Many have an adjustment but I never worried about it, I figured as long as I was within 10* it was fine. They've come in down in price BIG TIME over the past 40 years. The gun-type that were around $500 way back are now under $100 and I bought one a while back on sale for under $50. For a long time I used a smaller one I'd bought for around $30 to check tire temps. I was worried about the accuracy so much as consistency - I didn't care if it was off by 10* as long as it was always off by that amount.

Re: Infrared Laser Thermometer. What One? [Re: Stanton] #2824904
09/25/20 11:23 AM
09/25/20 11:23 AM
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Omaha Ne
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TJP Offline
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Might want to read the linked article beer

LINKED ARTICLE

Re: Infrared Laser Thermometer. What One? [Re: TJP] #2824912
09/25/20 11:37 AM
09/25/20 11:37 AM
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Wichita
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GY3 Offline
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I bought the Fluke 62Max about a month ago to monitor my nitrous bottle temp and make sure the heater was working properly. I found myself using it for all kinds of stuff.

Very happy with it's performance and it has the dual lasers.

I got it at cost for $105.

Fun thing to try when you get one: Point it into the night sky.

To get an accurate measurement, put a piece of flat black tape on whatever you are monitoring.



'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.33 @ 130mph with a 200 shot of nitrous. 6.48 @ 105mph in the 1/8th. 1.37 60 ft.

Re: Infrared Laser Thermometer. What One? [Re: TJP] #2824970
09/25/20 01:42 PM
09/25/20 01:42 PM
Joined: Jan 2003
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541 slobovia
A990 Offline
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Here's another article on cold reading IR thermometers. The author did a pretty neat test routine to support his writing

https://apelbaum.wordpress.com/2020/05/04/why-are-the-chinese-made-ir-thermometers-so-cold/

Re: Infrared Laser Thermometer. What One? [Re: A990] #2825015
09/25/20 03:06 PM
09/25/20 03:06 PM
Joined: Jan 2006
Posts: 6,086
USA
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Interesting that the “inner canthus of the eye” is a hot spot and a better area to measure human temperature at than the forehead.

I knew that the forehead was relatively cool, and had been measuring under the jaw at the spot where a finger tip can feel the pulse.

C446E32E-4BFD-4145-AFC4-219BF81E198E.jpeg






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