OK what does every one use to measure pipe temps. I have 5 different type k probes clamps etc, 4 different mechanical analog gauges 1 digital a laser TIF9612 with probe and my meter has type k compatibility. None of them ever agree. Is there something better? Am I being stupid? That one was hypothetical...
I used a Fluke 87 with temperature probes for much of my work before lasers. I made up little wells by cutting 2-3" pieces of 1/4" copper tubing, pinching one end and soldering it. I'd strap my well to pipe with ty-wraps and if vertical would put some glycerin in them. Served me well to get oil temps on and off oil coolers and the like.
When the lasers came along I got one an found that they weren't consistent on different materials, especially copper since I think some of the light "bounced" giving inaccurate readings. I found by making a black dot (using a felt tipped marker) on the pipe I got accurate, repeatable temperatures.
Any sensor you have that can be put in an ice bath can be checked for accuracy.
It is called "Emissivity".
Originally Posted by KnewYork
noun Thermodynamics .
the ability of a surface to emit radiant energy compared to that of a black body at the same temperature and with the same area."
A little flat black paint works as well.
In my opinion, IR thermometer are toys.
Originally Posted by Failure2Comply
They have specialized applications, but for every day use, a thermistor or thermocouple thermometer serves much better.
After 15 years of using thermocouples, I've been making the switch to thermistors.
Originally Posted by boilerman856
As of now, I use my Digi-cools for temp measurements. Slow, but accurate.
Thermocouples are sensitive to tiny induced voltages that can come from poor grounds, static buildup, RF energy from cell phones, and other sources that I'm sure I'm leaving out.
I don't really trust thermocouples at present for much more than a ball-park reading.
You are correct. Mine has never left the van.
Originally Posted by jpsmith1cm
My first IR came with a black grease pencil.
I like the copper tube idea. Lennox once had a RT unit with wells installed on the copper lines. Instructions said to fill with oil but I think glycerin would be better.
I should have learned to play the g'tar on the MTV. MK
I agree. For checking motor windings or electrical panels they work fine. I see too many people shooting a temperature across the room thinking it is accurate. I guess in their mind where ever the red dot hits is its sensing point?
Originally Posted by jpsmith1cm
I had a ton of k-type stuff and I found the same thing everyone else has......they suck. I only use mine to calibrate in ice water then check the calibration of my Cooper SH66A. Only complaint on it is you can't ever get all the sensors in the box and get it shut!!
The Cooper SH66A is my choice. I've had one for over 25 years. Every instrument has its flaws,especially the IR. You have to pay attention to how it does its "work" to be able to trust it. I use the IR only to get a "rough idea" if something is working. Since I'm old and lazy, the IR is only used for a quick ref. without getting a ladder.
Would love to hear if there is anything better than the Cooper SH66A.
the bluevac has a very accurate ambient thermometer built in. Stated accuracy is .2F
I like the ktype for in duct dry bulb, I use my SC56.
For pipe temps I use my AK900 sensors strapped and insulated.
and a cooper box for a backup
For pipe Cooper 4011
best bang for the buck but no high temps.
“If You Can Dodge A Wrench You Can Dodge A Ball”
the bluvac i once owned seemed to read different temps than everything else i had. ive been using cooper sh66 & 77 for years. i have some k type stuff ill use now & again. as for IR .. i use it on disconnects, contactors & such. good tool for that. i only shoot it at a diffuser to kill some time after a repair while the store temps out
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