Effect of ambient temperature on infrared device
readings for a surface at 38ºC (100ºF) with
emissivity 0.9.
20 40
0
32
60 80 100 120 Ambient T (F)
98
94
90
102
DermaTemp
Conventional Infrared
106
16 27 38
4
deg C 43
deg F 110
38
No AECS
AECS active
When AECS is active, ambient radiation is excluded and replaced by reflections of emitted radiation.

Correcting for Emissivity Automatically

Biological tissue has high emissivity, i.e. ~0.95. Accordingly,

the reflected compo-

nent will be about 5% of the energy mea- sured by the DermaTemp, which

translates to an abso- lute error of ~1°F

(0.5°C). In addition, skin emissivity varies due to color, texture, etc. over the approximate range of 0.92 to 0.98. An uncertainty of approxi- mately ±1°F (0.5°C) results from this emissivity variation, which can appreciably influence the assessment of a subtle perfusion issue.

A more significant er- ror is due to the re-

flected energy, which can vary considerably if the ambient radiation includes sunlight, radi- ant warmers, etc. To solve this problem the

DermaTemp is equipped with a unique patented feature called Automatic Emissivity Compensation System (AECS). The reflective

cup on the end of the probe automatically compensates for emissivity when it is touching, or brought to within approximately 1mm of the sur- face. By excluding ambient radiation, and replacing it with reflections of emitted radiation, the emissivity is corrected, and the accurate tem- perature indicated

Detection by Exception

The distribution of the temperature on the body surface varies appre- ciably. For example, on a normal individual, the highest average skin temperature is the forehead at 34.5°C (±0.73°C) and the lowest aver- age temperature is the toes at 27.1°C (±2.72°C).1 Considering the temperature of the skin is highly influenced by ambient temperature, one could wonder what diagnostic role, if any, temperature would play. The answer is that it plays a significant role, and the reason is the

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Exergen DT 1001-RS, DT 1001-LT, DT 1001-LN manual Correcting for Emissivity Automatically, Detection by Exception
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DT 1001-LN, DT 1001-RS, DT 1001, DT 1001-LT specifications

The Exergen DT 1001 series, consisting of the DT 1001-LN, DT 1001, DT 1001-RS, and DT 1001-LT, represents a cutting-edge advancement in non-invasive infrared thermometry technology. These models are designed for accurate and reliable temperature measurement across various settings, making them invaluable tools for healthcare professionals, educators, and individuals monitoring their own health.

A standout feature of the Exergen DT 1001 series is its precision in measuring core body temperature. Utilizing patented infrared technology, these devices detect the thermal radiation emitted by the temporal artery, thus providing an accurate representation of internal body temperature. This non-invasive method is not only safe but also quick, as it can yield results within seconds, making it ideal for both clinical environments and home use.

The DT 1001 series emphasizes ease of use. Equipped with a simple one-button operation, even individuals without technical training can operate the device effectively. The easy-to-read digital display provides clear temperature readings, which can often be coupled with visual and auditory alerts for fever detection, enhancing user experience.

Further enhancing user convenience is the memory function of the DT 1001 series. These models can store multiple readings, allowing users to track temperature trends over time. This feature is particularly useful in monitoring patients with fevers or chronic health issues where regular temperature checks are necessary.

The DT 1001-LN and DT 1001-LT are distinguished by their lightweight and portable design, making them suitable for on-the-go temperature checks. Conversely, the DT 1001-RS is optimized for clinical settings, featuring enhanced durability and robust performance under frequent usage.

Each model has been rigorously validated to meet clinical standards, ensuring that healthcare practitioners can rely on their accuracy. With their advanced technology, user-friendly design, and versatility, the Exergen DT 1001 series stands out as a leading choice in the realm of non-contact thermometers, promoting effective health monitoring for a wide range of users. Their continued popularity highlights a significant trend in modern healthcare towards efficient, precise, and non-invasive diagnostic tools.
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