Down to -4°F (-20C), a good time to use infrared camera and look for cold spots.

[jerzone@techhub.social]

Down to -4°F (-20C), a good time to use infrared camera and look for cold spots. Biggest culprits are around doors and aroue electric panel. The way to read this, since it's not a fixed scale, is to look at top and bottom of graph on the right to see what a particular photo's temperature range is. For example the first photo goes from 63.9 down to 48.6, while the second one is 56 to 31.
🧵 1/2
#EnergyEfficiency

[jerzone@techhub.social]

<rant>
This device appears to show the same thing wherever you point it, but unless you look really close you won't realize the scale changes with every movement, so what's a dark and "coldest" in one view may not be even close to the same temperature as that color in another. In first photo the coldest thing is 51°F, in the second one it's half that temperature. There is no way to tell this device to use a fixed range. </rant>

Maybe there's more expensive units that let you stitch together a panorama or make video of a wall or room, where everything gets mapped to the same scale. Then you would see the coldest, worst insulated spots and could focus on fixing those.

🧵 2/2
#EnergyEfficiency

[coreysnipes@hachyderm.io]

@jerzone But are you in an aquarium.

[jerzone@techhub.social]

@coreysnipes As you can tell from its color it is a warm blooded fish, surfing waves of coldness below, trying to reach its friend in the next photo who is in a cold 2x4 prison.

[jerzone@techhub.social]

Years ago a friend let me use a little FLIR device that clips into phone port. It used the phone's camera for an image, then combined that with the heat signature, which of course changed registration depending on how far away you were from the subject.
#EnergyEfficiency #Caturday

[cphansen@mastodon.social]

@jerzone also years ago, but I had access to a name-brand FLIR camera and found a buried menu item for changing whether the subject was near or far, to aid alignment of th two internal camera’s images!

[cphansen@mastodon.social]

@jerzone I have the exact same back story and complaint about the cheapie unit that I bought for myself!

[jerzone@techhub.social]

@cphansen Is it also pretty hard to read the tiny temperature text on the device screen? At least the phone FLIR put the graticule temperature right next to it so you didn't do the dance of moving graticule, try to read at temp, move graticule again, try reading temp. ":^)