IR Thermometer

[Nikon1975]

I just got a new IR thermometer. Nice as you can get point temperatures on the components. But you have to set emissivity.

I could not find data for semiconductors, or resistors and so on. Do someone use something like this ?

Thanks,

Davide

[marce]

Yes, a fluke Ti32.
Both they (Fluke) and FLIR have some excellent books on using the kit. I've got printed copies sent, their web sits have the details.
The fluke one is "Introduction to Thermography Principles"
Flir is "The Ultimate infrared handbook for R7D professionals"

One way to avooid emissitivity problems is black electrical insulation tape, or spray the board matt black. But the tape is excellont solution that Fluke showed us.

[scott wurcer]

Originally Posted by Nikon1975

I just got a new IR thermometer. Nice as you can get point temperatures on the components. But you have to set emissivity.

I could not find data for semiconductors, or resistors and so on. Do someone use something like this ?

Thanks,

Davide

Much less of a problem than you might think, the 95% setting is rarely off by more than 5%. It's funny that water is a good cal point just like with a thermocouple. A slush ice point reference should read 0C. If you boil water you can correct for altitude and barometric pressure from tables and get 100C +-1 degree too. You need to take care on depth of focus and spot size. The germanium lenses are very expensive that's why a 1mm spot size can cost >$1000.

[janneman]

Originally Posted by marce

Yes, a fluke Ti32.
Both they (Fluke) and FLIR have some excellent books on using the kit. I've got printed copies sent, their web sits have the details.
The fluke one is "Introduction to Thermography Principles"
Flir is "The Ultimate infrared handbook for R7D professionals"

One way to avooid emissitivity problems is black electrical insulation tape, or spray the board matt black. But the tape is excellont solution that Fluke showed us.

There's an extensive test of some of these units at Elektor:

Non-Contact Temperature Measurement - ELEKTOR.com | Electronics: Microcontrollers Embedded Audio Digital Analogue Test Measurement

jan

[Nikon1975]

Thanks,

I am trying to register to Elektor, but is continuing to ask me for the confirmation.

I'll try later.

Davide