What's the fascination with trailer bearings?
So I've seen many, many posts over the years about checking hubs with IR guns for excessive heat. I've even seen posts where people check their hubs every stop. :E My question is why? I have never ...
Forum Discussion
I have an IR gun, but I must say I don't trust it except for very basic information. I bought a name brand gun for about $100 several years ago when installing under the floor radiant heating and a new furnace. The radiant tubing was installed during a house remodel by removing the basement ceiling to get to the floor of the main level. 1" tubing was installed / attached to the bottom of the main flooring. It was a lot easier to aim the IR gun at the tubing to see what the water temps were doing than move a step ladder all over the basement to feel how the tubing heat was doing.
On the energy efficient furnace, there's an awful lot of piping. Again, a lot easier to aim an IR gun at things rather than reach to feel them and getting almost burned sometimes.
What I began to notice is that I had to aim at exactly the same points to get the same readings. Let's say that on the same run of copper pipe, after the hot water had been circulating for several minutes, if you aimed the gun at the tubing you got one reading, if you aimed it 2" away at a copper coupling you got another reading, if you aimed it a couple feet away at a copper ell you got a third reading.
This made things very confusing. After a while I only really used the gun to see when things were getting hotter or colder only and aiming at the same places each time. I now carry it in the MH. About the only thing I use it for is the inside dual so I don't have to get down on the ground to feel how warm it is. Otherwise, when I can reach things, I prefer to feel it with my hand which has a lot more experience than the IR gun............
Bill
On the energy efficient furnace, there's an awful lot of piping. Again, a lot easier to aim an IR gun at things rather than reach to feel them and getting almost burned sometimes.
What I began to notice is that I had to aim at exactly the same points to get the same readings. Let's say that on the same run of copper pipe, after the hot water had been circulating for several minutes, if you aimed the gun at the tubing you got one reading, if you aimed it 2" away at a copper coupling you got another reading, if you aimed it a couple feet away at a copper ell you got a third reading.
This made things very confusing. After a while I only really used the gun to see when things were getting hotter or colder only and aiming at the same places each time. I now carry it in the MH. About the only thing I use it for is the inside dual so I don't have to get down on the ground to feel how warm it is. Otherwise, when I can reach things, I prefer to feel it with my hand which has a lot more experience than the IR gun............
Bill
