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Sign up for the FLUKE VT02 Giveaway!

Posted by Tyler McDonald on 11/4/15 10:00 AM

We are giving away a FLUKE VT02 Visual IR Thermometer, The VT02 is the original visual IR thermometer that includes a digital camera with a thermal heat map overlay, hot and cold markers, and the ability to document your work and create reports. View our contest page to view current offers, and upcoming offers.

The drawing has been concluded as of December 14th 2015.

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Topics: Electrical Maintenance, Thermography, Electrical Inspection, Energized Electrical Maintenance, Emissivity, Giveaway

Is there an IR window “Pressure Rating” for use in ISO phase bus pressurized terminal boxes?

Posted by Martin Robinson on 10/1/15 10:30 AM

The short answer to your question is: No, there is no published ” pressure rating ” for the infrared (IR) window lens. There actually is no specific Standard existing to begin with requiring specific pressure withstand testing or assigned ratings for IR windows. However, IRISS products and lenses are tested against a minimum challenge of 950°Celsius and 25 PSI. In the case of IRISS only, this information does exist and is derived from the stunning results of much more severe testing parameters which our full product lines are subjected to–and this aspect is uniquely so for IRISS alone as our products are the most tested and certified in this industry and product category.

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Topics: Infrared Windows, Thermography, Testing & Certifications, Standards & Regulations, Isophase

Know your Spatial Resolution

Posted by Martin Robinson on 9/29/15 10:30 AM

Spatial Resolution is also known as the Instantaneous Field of View (IFOV) or Spot Size. The limitations of the spatial resolution are due to the size and expense of the focal plane array (FPA). The FPA of many moderately priced IR cameras will have an array of 320 x 240 or 160 x 120 detectors. This may make it difficult to determine the temperature of small targets at a long distance...

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Topics: Infrared Windows, Thermography, IR Cameras, Spatial Resolution

The Coffee Cup Test

Posted by Martin Robinson on 9/24/15 10:30 AM

A simple way to check the transmission rate of any infrared window is the “coffee cup test.” Use this test before your initial installation and during regular IR window maintenance for windows with materials that are known to degrade over time.

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Topics: Education, Thermography, Training, Emissivity, IR Cameras, IR-ID Labels

Last Chance to sign up for the FLUKE VT02 Giveaway!

Posted by Tyler McDonald on 9/22/15 10:30 AM

We are giving away a FLUKE VT02 Visual IR Thermometer, The VT02 is the original visual IR thermometer that includes a digital camera with a thermal heat map overlay, hot and cold markers, and the ability to document your work and create reports. View our contest page to view current offers, and upcoming offers.

Drawing to be concluded September 30th 2015.

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Topics: Education, Electrical Maintenance, Thermography, Electrical Inspection, Energized Electrical Maintenance, Emissivity

What are the advantages of using infrared windows in a thermographic inspection program?

Posted by Martin Robinson on 9/17/15 9:33 AM

At IRISS we see companies implement an infrared (IR) window program for a variety of reasons, but most tend to fall into the following categories:

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Topics: Safety, Infrared Windows, Thermography, Arc Flash Safety, Standards & Regulations, Electrical Inspection

Analyzing your findings… How accurate are your readings and why?

Posted by Martin Robinson on 9/15/15 9:39 AM

Many people are not aware that the detector in an infrared camera actually only reads electromagnetic radiation it receives in a specific range of wavelengths. In order to display this in a useful reading the camera makes several calculations in order to convert the actual data to a temperature. The emissivity and transmissivity (sometimes depending on the camera manufacturer) have to be manually entered into the camera’s menu. if this value is entered incorrectly the actual temperature will be exponentially different (see Stefan-Boltzmann’s Law) than the displayed temperature. The old saying of “well as long as it is consistently wrong the change will be noted” is not entirely correct either, as the difference between phases will also be exponentially wrong. The error is going to be worse as the temperature rises – if the differential between the measured temperatures is significant then the displayed temperatures could be significantly different!

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Topics: Safety, Electrical Maintenance, Infrared Windows, Thermography, Electrical Inspection, IR Cameras

The formula for determining Field of View Using any Infrared Camera

Posted by Martin Robinson on 9/10/15 9:48 AM

Every infrared camera defines its Field of View (FOV) across a horizontal/vertical axis.

You have two ways to determine the Field of View (FOV) on your camera:

  1. You can calculate the FOV using the formula: 2 x the tangent of ½ the angle x distance
  2. You can measure (and “map out”) the practical FOV with a quick field test to check your math!

The practical FOV test is quick, relatively easy, and in no way requires a scientific calculator!

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Topics: Infrared Windows, Thermography, IR Cameras, Field of View

Special Offers and Giveaways!

Posted by Martin Robinson on 6/3/15 2:04 PM

We are giving away a FLUKE VT02 Visual IR Thermometer, the slim, light profile fits comfortably in any work pocket so you can always keep your C2 at your side and never miss an opportunity to uncover invisible building issues, show them to customers, and offer helpful solutions. View our contest page to view current offers, and upcoming offers.

Drawing to be concluded July 4th 2015.

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Topics: Education, Electrical Maintenance, Thermography, Electrical Inspection, Energized Electrical Maintenance, Emissivity

Know Your Emissivity

Posted by Martin Robinson on 4/15/15 11:28 AM

What is Emissivity?
The material emissivity (written as “?” or “e”) is the relative power of its surface to emit heat by radiation. Materials are assigned an emissivity value between 0 and 1.0. Emissivity is a measure of a material’s ability to emit infrared energy. The emissivity of a surface is the ratio of the energy radiated from it to that from a blackbody at the same temperature, the same wavelength and under the same viewing conditions.

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Topics: Education, Electrical Maintenance, Thermography, Electrical Inspection, Energized Electrical Maintenance, Emissivity

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