Tips to choose a proper Medical Fever Imaging Camera Print
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Wednesday, 11 November 2009 03:23

Operating Guide

Tips to choose a proper Medical Fever Imaging Camera:

Irtek is an infrared company and has people who understand about the business. The successful application of Fever Imaging System depends not only the infra red technology behind it but also the implementation in the field and knowledge about human pathology condition and how it works.


Do not be overwhelmed with budget industrial thermal camera with features such as Fusion technology or software analysis etc

Note: Mi38i comes with a clinical non contact forehead thermometer that measure to 0.2o C accuracy. You will be able to confirm if a the suspected target is feverish or not from the thermal imager alarm.


Scanning Rate:

Scanning rate determines the speed of your image sampling time. The scanning rate is measured in Hz. 50Hz is almost continuous whilst 9 Hz is slow and almost still.

For scanning massive flow of people or large crowd in the airport, sea port, gathering or flow of people thru an entrance gate in a shopping mall or industrial workers coming to work in a shift. It is mandatory to have a 50 Hz scanning rate camera.

Note: IRTEK Mi 38i is a 50Hz camera

Output PAL /NTSC Video Signal to TV /LCD:

Most of the low cost camera does not have video out put to TV/LCD. An operator needs to have a reasonable size of view of the LCD screen all the time.

Note: Mi38i has an output Pal video output to connect to TV

Understanding your pixels :

Pixels means image measuring resolution. Resolution is a picture clarity or picture sharpness.

Note: Mi38i is 160x120 pixels and is reasonably good enough to scan human skin temperature. The higher the pixels, the more expensive a thermal camera is. This is a dominant factor that drives the price of a thermal camera

Understanding your thermal sensitivity

Thermal sensitivity or NETD (noise equivalent temperature difference) is a measure of the sensitivity of a detector of thermal radiation in the infrared. The smaller the number, the better the detection is (Generally it is between 80mK to 200mK).

Field of View

Many thermal cameras in the market do not have wide angle lens. This can be problematic as you need to have a wide angle view over the flowing crowd. This is often not an option for scanning massive crowd but required as a standard accessories.

Practically speaking the FOV (Field of view) should be at least 18⁰x13⁰ to work effectively in fever scanning.

Note: Mi38i has wide angle lens (18⁰x13⁰ FOV)

How accurate is accurate?

Most of the thermal camera in the market today is not accurate or stable enough to determine the pathology condition of a sick person especially at a distance of a few meters away from the target. Too many variations that affect the outcome of the measurement.

Note: Mi38i has an added tool to take your measurement out of a guess work.

Last Updated on Monday, 14 December 2009 08:02