HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
<<  <  Page 2/3  >  >>
schmadel
User Rank
Iron
Re: FLIR Camera to identify hot spots
schmadel   8/13/2012 1:35:15 PM
NO RATINGS
Hi Rob,

Sorry to take so long to get back to you.

I cant' be of much help as I've never used any of these systems to discover overheated connections. The systems, like those provided by Omega, boast an accracy of about 1 degree C. This should be fine for line-of-sight instances. But for connections inside panels something like the glass covers mentioned by lynnbr2 might work.

Incidentally, the link to ElectroPhysics didn't mention anything about glass covers.

-Don

Rob Spiegel
User Rank
Blogger
Re: FLIR Camera to identify hot spots
Rob Spiegel   8/9/2012 12:32:33 PM
NO RATINGS
Those prices seem reasonable, Schmadel. How about accuracy. Do they catch most of the problems -- or potential problems?

lynnbr2
User Rank
Iron
Re: FLIR Camera to identify hot spots
lynnbr2   8/9/2012 12:31:24 PM
NO RATINGS
an e-book on IR Viewports which includes basic design and application information is available at: http://www.iriss.com/Ten_things_about_Infrared-Windows_enquiry_form.php  

schmadel
User Rank
Iron
Re: FLIR Camera to identify hot spots
schmadel   8/9/2012 12:20:56 PM
NO RATINGS
Sorry, I mean to type "Rob" not "Bob".

-Don

schmadel
User Rank
Iron
Re: FLIR Camera to identify hot spots
schmadel   8/9/2012 12:19:39 PM
NO RATINGS
Hi Bob,

Here's a link to some optical thermometers.

http://www.allqa.com/IRcompare.htm

Some use IR lasers for the emissivity calibration, some use additional sighting lasers in the visible, and some have no lasers.

I also recal seeing our HVAC people using some with red sighting lasers to check hydronic heating systems.

These things seem to range in the $50 to $500 range.

-Don

Rob Spiegel
User Rank
Blogger
Re: FLIR Camera to identify hot spots
Rob Spiegel   8/9/2012 11:30:28 AM
NO RATINGS
Interesting, Schmadel. So these use both laser and a thermal sensor and they're still not expensive.

schmadel
User Rank
Iron
Re: FLIR Camera to identify hot spots
schmadel   8/9/2012 10:53:54 AM
NO RATINGS
The thermal system explained by lynnbr2 is a good approach. There are inexpensive point and click systems that use a laser beam to determine the emissivity at a particular wavelength, and then a thermal sensor to measure the emission near that wavelength. These hand held systems are sold for consumers for use in kitchens for measuring the temperature of a pot, or a roast, or a pot roast...  But when using a thermal approach one must have the circuit under significant power.

Jack Rupert, PE
User Rank
Platinum
Re: FLIR Camera to identify hot spots
Jack Rupert, PE   8/9/2012 10:21:46 AM
NO RATINGS
Great idea @lynnbr2.  Anything that makes safety reviews and maintenance easier increases the likelihood that it will be performed.  I like the idea of IR friendly glass which not only makes the checks easier, in many cases it means the checks do not require a process shutdown.

Rob Spiegel
User Rank
Blogger
Re: FLIR Camera to identify hot spots
Rob Spiegel   8/8/2012 1:31:39 PM
NO RATINGS
Thanks for the info, Lynnbr2. This is very helpful. What a great system. What what you suggest, it sounds expensive.

lynnbr2
User Rank
Iron
Re: FLIR Camera to identify hot spots
lynnbr2   8/8/2012 12:13:11 PM
NO RATINGS
There is now IR-friendly glass that can be added to any cabinet to create a viewport so that the internal circuitry can be imaged by the thermal camera without opening the cabinet.

This is especially handy on Motor Control Centers that employ and interlock on the door. However, because of the increased engineering req'd and subsequent addt'l BoM cost, they are not common.

A whitepaper on this topic can be found at: http://www.electrophysics.com/nl/th0708/ 

<<  <  Page 2/3  >  >>


Partner Zone
Latest Analysis
It's been two years since the Mac Mini's last appearance on iFixit's teardown table, but a newly revised version joins Apple's lineup this week.
More often than not, with the purchase of a sports car comes the sacrifice of any sort of utility. In other words, you can forget about a large trunk, extra seats for the kids, and more importantly driving in snowy (or inclement) weather. But what if there was a vehicle that offered the best of both worlds; great handling and practicality?
Kevin Gautier of Formlabs describes the making of a carbon fiber mold for an intake manifold, using a $3,300 3D printer, during Medical Design & Manufacturing Midwest.
Science fiction author Isaac Asimov may have the best rules for effective brainstorming and creativity. His never-before-published essay, "On Creativity," recently made it to the Web pages of MIT Technology Review.
Much has been made over the potentially dangerous flammability of lithium-ion batteries after major companies like Boeing, Sony, and Tesla have grappled with well-publicized battery fires. Researchers at Stanford University may have come up with a solution to this problem with a smart sensor for lithium-ion batteries that provides a warning if the battery is about to overheat or catch fire.
More:Blogs|News
Design News Webinar Series
10/7/2014 8:00 a.m. California / 11:00 a.m. New York
9/25/2014 11:00 a.m. California / 2:00 p.m. New York
9/10/2014 11:00 a.m. California / 2:00 p.m. New York
7/23/2014 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Oct 20 - 24, How to Design & Build an Embedded Web Server: An Embedded TCP/IP Tutorial
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Class: 10/28-10/30 11:00 AM
Sponsored by Stratasys
Next Class: 10/28-10/30 2:00 PM
Sponsored by Gates Corporation
Next Class: 11/11-11/13 2:00 PM
Sponsored by Littelfuse
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service