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A temperature data logger, also called temperature monitor, is a portable measurement instrument that is capable of autonomously recording temperature over a defined period of time. The digital data can be retrieved, viewed and evaluated after it has been recorded.
With the advent of digital recorders, the FDR and CVR can be manufactured in one fireproof, shock proof, and waterproof container as a combined digital cockpit voice and data recorder (CVDR). Currently, CVDRs are manufactured by L3Harris Technologies [ 42 ] and Hensoldt [ 43 ] among others.
Time temperature indicators are commonly used on food, pharmaceutical, and medical products to indicate exposure to excessive temperature (and time at temperature). [1] In contrast, a temperature data logger measures and records the temperatures for a specified time period. The digital data can be downloaded and analyzed.
A data logger (also datalogger or data recorder) is an electronic device that records data over time or about location either with a built-in instrument or sensor or via external instruments and sensors. Increasingly, but not entirely, they are based on a digital processor (or computer), and called digital data loggers (DDL).
In 2013, Cowtan and Way suggested [29] [30] that global temperature averages based on surface temperature data had a possible source of bias due to incomplete global coverage if the unsampled regions are not uniformly distributed over the planet's surface. They addressed this problem by combining the surface temperature measurements with ...
Since 1979 the Stratospheric sounding units (SSUs) on the NOAA operational satellites have provided near global stratospheric temperature data above the lower stratosphere. The SSU is a far-infrared spectrometer employing a pressure modulation technique to make measurement in three channels in the 15 μm carbon dioxide absorption band.
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