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App note: Modern PRTD temperature sensors and high-resolution Delta-Sigma ADCs enable wide range high-accuracy temperature measurements

App note: Modern PRTD temperature sensors and high-resolution Delta-Sigma ADCs enable wide range ...

Modern PRTD temperature sensors and high-resolution Delta-Sigma ADCs enable wide range high-accuracy temperature measurements application note from Maxim:

Many modern industrial, medical, and commercial applications require temperature measurements in the extended temperature range with accuracies of ±0.3°C or better, performed with reasonable cost and often with low power consumption. This article explains how platinum resistance temperature detectors (PRTDs) can perform measurements over wide temperature ranges of -200°C to +850°C, with absolute accuracy and repeatability better than ±0.3°C, when used with modern processors capable of resolving nonlinear mathematical equation quickly and cost effectively. This article is the second installment of a series on PRTDs. For the first installment, please read application note 4875, “High-Accuracy Temperature Measurements Call for Platinum Resistance Temperature Detectors (PRTDs) and Precision Delta-Sigma ADCs.”

A similar version of this article appeared in the June 21, 2012 issue of EDN magazine.

 

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