Kim Gen Jung, Yoo Yong Shim, Kim Bong Hak, Lim Sun Do, Hyun Song Jong
Department of Physics, Chungnam National University, Daejeon 305-764, Korea.
Physiol Meas. 2014 May;35(5):753-62. doi: 10.1088/0967-3334/35/5/753. Epub 2014 Mar 26.
A small-size transfer blackbody cavity for calibration of infrared ear thermometers (IRETs) was developed and characterized at the Korea Research Institute of Standards and Science. This blackbody cavity consists of a reflector exposed to the air and a radiator with three-step curves immersed in a water-bath, and has an angularly uniform emissivity of higher than 0.9993. The radiance temperature of the blackbody cavity was measured with an IRET. We also calculated the effective emissivity by using the software STEEP322, considering the influence of the shape and temperature of the probe-tip of the IRET on the effective emissivity of the blackbody cavity. The measured and calculated radiance temperatures of the blackbody cavity were compared to those of the ASTM-type blackbody cavity and are in good agreement. Uncertainties (k = 1) of the blackbody cavity are estimated to be less than 44 mK in the temperature range 35-42 °C.
韩国标准科学研究院开发并表征了一种用于校准红外耳温计（IRET）的小型传输黑体腔。该黑体腔由暴露在空气中的反射器和浸入水浴中的具有三段曲线的散热器组成，其角向均匀发射率高于0.9993。用红外耳温计测量了黑体腔的辐射温度。我们还使用软件STEEP322计算了有效发射率，考虑了红外耳温计探头尖端的形状和温度对黑体腔有效发射率的影响。将黑体腔的测量和计算辐射温度与ASTM型黑体腔的辐射温度进行了比较，结果吻合良好。在35 - 42°C的温度范围内，黑体腔的不确定度（k = 1）估计小于44 mK。
