کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
11012205 1800897 2019 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Development of a simple CO2 sensor based on the thermal conductivity detection by a thermopile
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
پیش نمایش صفحه اول مقاله
Development of a simple CO2 sensor based on the thermal conductivity detection by a thermopile
چکیده انگلیسی
A simple and effective thermal conductivity based CO2 gas sensor has been successfully developed. The CO2 sensor consists of a modified IR thermopile sensor without an IR window. The thermopile is heated by the AC current that is applied through the output terminals of the device, which in turn leads to a temperature gradient generating a DC output voltage. The gas exposed to the thermopile simultaneously cool down the thermopile. Thus, the thermopile can simultaneously serve as a heater and temperature sensor. The built-in sensors possess low production costs, low power consumption and are easily manufactured. From the conducted experiments, the sensor can work well, and the results can be validated with the established theory, as evidenced by the RMS error of 0.787. The measurement results are also in a good agreement with the model predictions Mason and Saxena for the thermal conductivity of gas mixtures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Measurement - Volume 133, February 2019, Pages 139-144
نویسندگان
, , , , ,