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Tractor Talk Discussion Forum

laser thermometer

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bm3501466

03-04-2007 19:40:06




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Do those laser thermometers work well? I was wondering if they could tell engine temp accurately. Do they work well enough to tell which cylinder is missing after pointing it? What brands do all of you have experience with?




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marlowe

03-05-2007 13:31:45




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 Re: laser thermometer in reply to bm3501466, 03-04-2007 19:40:06  
have a 35.00 from harbor tools and it's the best 35.00 ever spent can find a dead cyl. in a sec. have found bad bearings on conbines all kind of things can be found with it



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Trkr

03-05-2007 09:55:29




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 Re: laser thermometer in reply to bm3501466, 03-04-2007 19:40:06  
I have a Raytek also,and the laser just quit working on it.The temp still works but you cant aim it very accurately.Any body know if this can be fixed?



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buickanddeere

03-05-2007 05:53:57




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 Re: laser thermometer in reply to bm3501466, 03-04-2007 19:40:06  
The laser doesn't read temperature. It's just for pointing the recievers lense and IF detector. We use them all the time looking for hot/loose electrical connections on live equipment. Even brush & slip ring temps on generators. The better units can be calibrated for objects varying from shinny to flat black.



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Kestrel CT

03-05-2007 04:52:41




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 Re: laser thermometer in reply to bm3501466, 03-04-2007 19:40:06  
Like others mentioned, I find my Raytek a terrific choice. I have the Minitemp MT6 model, was around $70.00 on-line. For shiny surfaces, put a piece of tape over the surface to be measured first to give it a "bite".
This model reads a one inch area held 10" away, has a large LCD screen, and records/saves the highest temp when scanning something.



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Hobo,NC

03-05-2007 04:35:59




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 Re: laser thermometer in reply to bm3501466, 03-04-2007 19:40:06  
I brought the first one I ever saw ‘bout 20 years ago from the snap on man. He handed it to me and I shot every thang in site even told him he had a brake drag’n on his truck. Wonder full tool and has many uses and the best thing @ 50 to 80 bucks cheap, I paid close to $200 fer my first one. Make shur the one you git takes temps in the 7 to 800 range, I don’t see were the one that goes to around 400 would be that much help or lets say as useful in a automotive application. Like enny thing else you have to learn how to use it. It does not like to be close to a alternator are a HEI ignition system but can be werked around.

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frankiee

03-05-2007 02:37:50




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 Re: laser thermometer in reply to bm3501466, 03-04-2007 19:40:06  
On ships they have pyrometers built into each cylinder. I cant get over why all machinery does not have that option. I used raytek
I found it real accurate after playing with it alot and getting use to it



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MN Scott

03-04-2007 20:44:47




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 Re: laser thermometer in reply to bm3501466, 03-04-2007 19:40:06  
I have a Raytec that works great. As others have said you need to be as close as possable. Works great for finding a missing cylinder on a gas or diesel. I also use mine to check the bearings on my round baler and combine. Just run the machine awile to get it warmed up then shut it down and walk around zapping the bearings. Most bearings run about 100 to 150 degrees. If you find one running a temp you know its time to replace it. Saves time and the danger of fire or damaging other parts. A good investment in my opinion.

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Roger in Iowa

03-04-2007 20:03:50




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 Re: laser thermometer in reply to bm3501466, 03-04-2007 19:40:06  
I have a Craftsman ($50) and really like it. Accurate to + or - a couple of degrees.

Yes I believe they can be used to determine which cylinder was firing. Used it on headers for a race car. Tractor manifolds may be more difficult but experience adds knowledge how to use. Useful for other things as well.

Roger in Iowa



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Davis In SC

03-04-2007 19:47:03




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 Re: laser thermometer in reply to bm3501466, 03-04-2007 19:40:06  
They are fairly accurate. from my experiences. The only places they do not work well, are on shiny surfaces, such as those that are polished or chromed...



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Ryan - WI

03-04-2007 19:43:02




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 Re: laser thermometer in reply to bm3501466, 03-04-2007 19:40:06  
I have a Raytek that I like. It can be used to tell the differences in temps fairly accurately. I haven't used mine on a cyl block but I have gone from window to counter and it picked up about 5 degrees of difference so I would think it would work for you. Just keep in mind that as you move back the area it takes the reading from expands. Get as close as you can in order to get an accurate reading on pinpoint heat sources.

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