| View previous topic :: View next topic |
| Author |
Message |
Nathan Site Admin

Joined: 21 Jan 2007 Posts: 284 Location: Danbury, CT
|
Posted: Sun Jun 14, 2009 9:44 pm Post subject: Tip of the week form Terry IR Temp Gauges |
|
|
Why inexpensive IR temperature gauges are bad!
Inexpensive IR temperature gauges are sensitive to radio transmissions. Link to a small inexpensive IR temperature gauge with a notice about radio transmissions:
http://manuals.hobbico.com/dtx/dtxp3100-manual-v1_1.pdf
This manufacturer tells customers about the problem because they sell radio control vehicles and related equipment and using their gauge around their products will likely lead to problems.
IR temperature gauges operate on the principal that objects radiate heat. The amount of heat radiated is known as it's emissitivity - remember that college physics class on black body radiation that probably all of us slept through. Normally you do not know the emissitivity of the surface of the object you are measuring the temperature of and so you cannot calibrate the IR gauge to the material. Link to a table with emissitivity of various materials: http://www.engineeringtoolbox.com/emissivity-coefficients-d_447.html
So as you radio to your team that you have found this strange cold spot that you can't feel but you can measure... you have just confirmed that you are a fool, now go sit in the corner and study your orb pictures. _________________ Thinking outside the Pine Box... |
|
| Back to top |
|
 |
MagnusApollo

Joined: 14 Feb 2007 Posts: 81 Location: Rochester NY
|
Posted: Mon Jul 06, 2009 12:20 pm Post subject: |
|
|
can I get an AMEN!!! _________________ EVP scare me... seriously, I scream like a little girl. But, don't laugh, I'm a big guy, I could, in theory hurt you. |
|
| Back to top |
|
 |
|