INfrared heat guns.....

[mrvette]

Any of you guys with heat guns in differant sections of the globe, I kind of curious what you get on various paints out in sunlight....chrome too

in C and F if you can.....curious as my wife's Escort hits 165 on that light metallic green they used in '99.....165f is freeking BLAZING

curious what the high temp record is for automotive paints.....

I bet black get it, but is there a huge difference as to where on the globe it is???:bonkers::bonkers::harhar:

 

[SmokinBBC]

Never thought of checking the paint. When/if the sun shines today, I'll give it a shot with the red exped. and white cobalt.

 

[saudivette]

I'll check mine tomorrow when I get it back from the Dodge service center.

A couple of years ago, I was doing an engine ground run at work. Gotta have the canopy closed and during engine performance checks, the ECS system has to be off. It was the middle of summer and hotter than a damn hot thing so I opened the thermometer on my mobile phone (yeah, yeah, yeah, I know it's not supposed to be on) and put it on the dash of the plane. At 68*C it made a pathetic bleep and turned off - that's around 155F :amazed:

 

[crazyhorse]

I've measured near 128 f....but then ground surface temps (asphalt street) was 150 f at same time...and ambient was 110 f...
Raytek Mini Temp gun...instructions for mine say not to measure chrome...you get error readings..

 

[Dirtbuster1]

Here is a short cut to compensate for colors or different types of materials. Most IR guns are set at 0.95 emissivity. Put a piece of black tape on anything, let it absorb the heat and measure the tape. Aluminum will really screw up the reading on an IR gun.

http://www.infrared-thermography.com/material-1.htm

 

[mrvette]

Here is a short cut to compensate for colors or different types of materials. Most IR guns are set at 0.95 emissivity. Put a piece of black tape on anything, let it absorb the heat and measure the tape. Aluminum will really screw up the reading on an IR gun.

http://www.infrared-thermography.com/material-1.htm

OK, now down to specifics I didn't know about, so is that NAKED aluminum or painted aluminum?? and I see different paint listed, fine, but the temp of the surface is just that, no?? so I take that table percentage and that is the ACTUAL temp of what the gun says???

:huh2:

 

[saudivette]

Gene, I just went and measured my Durango which has been parked in direct sunlight for about 2 hours. The roof reads 175*F and the hood reads 182*F. Ambient temp is 115*F :surrender:

 

[mrvette]

Gene, I just went and measured my Durango which has been parked in direct sunlight for about 2 hours. The roof reads 175*F and the hood reads 182*F. Ambient temp is 115*F :surrender:

What color is the truck??? That's a serious Hibachi there, but you all leave the windows down to keep the interior intact....but what about that dust you talk of...???

 

[saudivette]

Gene, I just went and measured my Durango which has been parked in direct sunlight for about 2 hours. The roof reads 175*F and the hood reads 182*F. Ambient temp is 115*F :surrender:

What color is the truck??? That's a serious Hibachi there, but you all leave the windows down to keep the interior intact....but what about that dust you talk of...???

No, have to keep the windows up to keep the dust out. Those temps were taken through a nice layer of white dust too!

I would have a carport to park it in but that's where the BOSS is

 

[Dirtbuster1]

Here is a short cut to compensate for colors or different types of materials. Most IR guns are set at 0.95 emissivity. Put a piece of black tape on anything, let it absorb the heat and measure the tape. Aluminum will really screw up the reading on an IR gun.

http://www.infrared-thermography.com/material-1.htm

OK, now down to specifics I didn't know about, so is that NAKED aluminum or painted aluminum?? and I see different paint listed, fine, but the temp of the surface is just that, no?? so I take that table percentage and that is the ACTUAL temp of what the gun says???

:huh2:

Without looking at the charts, I think that aluminum reflects around 67%. Painted materials are different. I think I saw a paint shortcut on that same website. Look at the difference between aluminum & SS. One would think it similar, but drastically different. I helped design a heat shield at the plant. I designed it to be aluminum when ordered. The machine shop used SS thinking it would work better. Anyway after installation we started cooking bearings. I started recieved quite a bit of heat with the bearing failures. I put some black tape on the shield and saw what was taking place. I checked with the machine shop to verify material used. I was told SS and that would not matter. After calling a meeting with the planners & machine shop they were shocked at what difference it would make, and said they would make new ones. Needless to say our problem went away.

This makes me think of Birds reference on making some heat shields in another thread for an exhaust shield. SS will only absorb more heat, but it will be better than nothing.

 

[mrvette]

Here is a short cut to compensate for colors or different types of materials. Most IR guns are set at 0.95 emissivity. Put a piece of black tape on anything, let it absorb the heat and measure the tape. Aluminum will really screw up the reading on an IR gun.

http://www.infrared-thermography.com/material-1.htm

OK, now down to specifics I didn't know about, so is that NAKED aluminum or painted aluminum?? and I see different paint listed, fine, but the temp of the surface is just that, no?? so I take that table percentage and that is the ACTUAL temp of what the gun says???

:huh2:

Without looking at the charts, I think that aluminum reflects around 67%. Painted materials are different. I think I saw a paint shortcut on that same website. Look at the difference between aluminum & SS. One would think it similar, but drastically different. I helped design a heat shield at the plant. I designed it to be aluminum when ordered. The machine shop used SS thinking it would work better. Anyway after installation we started cooking bearings. I started recieved quite a bit of heat with the bearing failures. I put some black tape on the shield and saw what was taking place. I checked with the machine shop to verify material used. I was told SS and that would not matter. After calling a meeting with the planners & machine shop they were shocked at what difference it would make, and said they would make new ones. Needless to say our problem went away.

This makes me think of Birds reference on making some heat shields in another thread for an exhaust shield. SS will only absorb more heat, but it will be better than nothing.

INteresting, guess I want to pull the garage door up a bit during tmrw's blow and see what various comparisons are among my various instruments...

I know the thermo couple devices are accurate, and I kind of thought the IR gun was also....now maybe I need more varification....

IR gun says the naked aluminum intake reads same as the brass couplings, and it makes sense via the black painted t-stat housing....

but none of the headers read anything similar, ever...go figger...same color pretty much, I would think I could get even readings...but they off by several hundred degrees on a DPFI engine idling smooth too....go figger...

:sweat::chinese:

 

[SmokinBBC]

Gene, I just remembered to do this.

About 82 out right now. Measured on hood in direct sunlight

White Cobalt on hood 127 degrees.
Red Exp. 144 degrees.