On black bodies -- does anybody know anything about those cheap Electro Optical B1804D and B1804D/S7 sources that are on Ebay now? What are the temperature ranges and other parameters? I don't mind making my own controllers for those but there is
ABSOLUTELY NO information on them at all so I don't even know if they are worth buying even that cheap...
Electro Optical site only shows new ones, no information on anything older at all like they never existed. I don't even mention manuals; there are no even rudimentary datasheets anywhere...
I bought a cheap WS152 source just to look what it is and it turned out to be a cavity unit i.e. a high-temp one but what is its temperature range? Having it in my hands didn't make this matter any clearer
![Sad :(](https://www.eevblog.com/forum/Smileys/default/sad.gif)
I do have a very nice IR-160 wide area (12"x12") 350 degree Celsius source from Infrared Systems Development as well as their hi-temp cavity one, IR-563 that goes up to 1050 degrees Celsius but only have one IR-301 controller and one cable for both and no manuals but those are current production units so there is at least some information on the manufacturer's website and I'll try to fish manuals and other info from them in a week or two when all other urgent tasks are done.
But there is absolutely nothing on those Electro Optical units -- zero, nada, zilch...
BTW, Flir asks $625 for Exx calibration
PER LENS so it is just mere $1,875 for 3-lens calibration
![Sad :(](https://www.eevblog.com/forum/Smileys/default/sad.gif)
And they recommend to spend that pocket change on calibration each and every year...
With just IR-160/301 I can do such calibration even every week for free and I spent on those less that just one Flir factory calibration. I would like to extend my calibration capabilities into negative temperature range using some older source as a base for Peltier cooled/heated one but it would be very nice to have at least some information to find out which source to buy if at all...