scholarly journals Low-Temperature Carbon Dioxide Gas Sensor Based on Yolk–Shell Ceria Nanospheres

2020 ◽  
Vol 12 (15) ◽  
pp. 17745-17751 ◽  
Author(s):  
Cecilia A. Zito ◽  
Tarcísio M. Perfecto ◽  
Ann-Christin Dippel ◽  
Diogo P. Volanti ◽  
Dorota Koziej
Keyword(s):  
Carbon Dioxide ◽  
Low Temperature ◽  
Gas Sensor ◽  
Carbon Dioxide Gas

scholarly journals Humidity Measurement in Carbon Dioxide with Capacitive Humidity Sensors at Low Temperature and Pressure

Sensors ◽  
2018 ◽  
Vol 18 (8) ◽  
pp. 2615 ◽  
Author(s):  
Andreas Lorek ◽  
Jacek Majewski
Keyword(s):  
Carbon Dioxide ◽  
Low Temperature ◽  
Sensor Calibration ◽  
Humidity Sensors ◽  
Near Surface ◽  
Adsorption Sites ◽  
Carbon Dioxide Gas ◽  
Individual Calibration ◽  
German Aerospace ◽  
Available Information

In experimental chambers for simulating the atmospheric near-surface conditions of Mars, or in situ measurements on Mars, the measurement of the humidity in carbon dioxide gas at low temperature and under low pressure is needed. For this purpose, polymer-based capacitive humidity sensors are used; however, these sensors are designed for measuring the humidity in the air on the Earth. The manufacturers provide only the generic calibration equation for standard environmental conditions in air, and temperature corrections of humidity signal. Because of the lack of freely available information regarding the behavior of the sensors in CO2, the range of reliable results is limited. For these reasons, capacitive humidity sensors (Sensirion SHT75) were tested at the German Aerospace Center (DLR) in its Martian Simulation Facility (MSF). The sensors were investigated in cells with a continuously humidified carbon dioxide flow, for temperatures between −70 °C and 10 °C, and pressures between 10 hPa and 1000 hPa. For 28 temperature–pressure combinations, the sensor calibration equations were calculated together with temperature–dependent formulas for the coefficients of the equations. The characteristic curves obtained from the tests in CO2 and in air were compared for selected temperature–pressure combinations. The results document a strong cross-sensitivity of the sensors to CO2 and, compared with air, a strong pressure sensitivity as well. The reason could be an interaction of the molecules of CO2 with the adsorption sites on the thin polymeric sensing layer. In these circumstances, an individual calibration for each pressure with respect to temperature is required. The performed experiments have shown that this kind of sensor can be a suitable, lightweight, and relatively inexpensive choice for applications in harsh environments such as on Mars.

A novel carbon dioxide gas sensor based on solid bielectrolyte

2003 ◽  
Vol 88 (3) ◽  
pp. 292-299 ◽  
Author(s):  
Ling Wang ◽  
R.V. Kumar
Keyword(s):  
Carbon Dioxide ◽  
Gas Sensor ◽  
Carbon Dioxide Gas

Fabrication of carbon dioxide gas sensor and its alarm system using indium tin oxide (ITO) thin films

1994 ◽  
Vol 21 (3) ◽  
pp. 193-197 ◽  
Author(s):  
N.G. Patel ◽  
K.K. Makhija ◽  
C.J. Panchal
Keyword(s):  
Thin Films ◽  
Carbon Dioxide ◽  
Gas Sensor ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Alarm System ◽  
Carbon Dioxide Gas ◽  
Ito Thin Films

Novel carbon dioxide gas sensor based on infrared absorption

2000 ◽  
Vol 39 (8) ◽  
pp. 2235 ◽  
Author(s):  
Guangjun Zhang
Keyword(s):  
Carbon Dioxide ◽  
Gas Sensor ◽  
Infrared Absorption ◽  
Carbon Dioxide Gas

A practical carbon dioxide gas sensor using room-temperature hydrogen plasma reduced graphene oxide

2014 ◽  
Vol 193 ◽  
pp. 692-700 ◽  
Author(s):  
Syed Muhammad Hafiz ◽  
Richard Ritikos ◽  
Thomas James Whitcher ◽  
Nadia Md. Razib ◽  
Daniel Chia Sheng Bien ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gas Sensor ◽  
Room Temperature ◽  
Hydrogen Plasma ◽  
Carbon Dioxide Gas ◽  
Reduced Graphene

BaTiO3 based Carbon-dioxide gas sensor

2012 ◽  
Author(s):  
S. B. Rudraswamy ◽  
Palash Kumar Basu ◽  
Navakanta Bhat
Keyword(s):  
Carbon Dioxide ◽  
Gas Sensor ◽  
Carbon Dioxide Gas

Carbon dioxide gas sensor derived from a 547-hole microstructured polymer optical fiber preform

2010 ◽  
Vol 35 (19) ◽  
pp. 3270 ◽  
Author(s):  
Jian Wang ◽  
Lili Wang
Keyword(s):  
Carbon Dioxide ◽  
Optical Fiber ◽  
Gas Sensor ◽  
Polymer Optical Fiber ◽  
Fiber Preform ◽  
Carbon Dioxide Gas
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