| 摘要 |
The present invention relates to a carbon dioxide measuring device. More specifically, the present invention relates to a carbon dioxide measuring device in which one side of a heating means is formed with a pattern for transmitting a reference electrode signal and in which the outside of the portion where the heating means and a carbon dioxide sensor make contact is connected to an electromotive force lead wire for measuring the concentration of carbon dioxide. This arrangement avoids the occurrence of cracking. and prevents sealant from spreading to the reference electrode and from causing any effect on the electromotive force, thereby increasing durability, and accuracy and reliability in measurement of carbon dioxide concentrations. The carbon dioxide measuring device (1000) of the present invention comprises: a carbon dioxide sensor (100) comprising a solid electrolyte (110), and a reference electrode (120) and a sensing electrode (130) formed on one side or on both sides of the solid electrolyte (110); a heating means (200) comprising a ceramic base plate (210) having a heat-emitting part (220) on one side thereof; and an electromotive force lead wire (300) extending to the reference electrode (120) and the sensing electrode (130). The carbon dioxide measuring device of the present invention is advantageous in that, because it employs a heating means formed with a pattern for transmitting a reference electrode signal, the carbon dioxide sensor and the heating means can be joined more effectively by forming the lead wire on the outside of the location where the carbon dioxide sensor and the heating means make contact, and the reliability of carbon dioxide concentration measurement can be further improved by forming a spreading-preventing layer which can prevent sealant from spreading to the reference electrode. Further, the carbon dioxide measurement device of the present invention is advantageous in that the shape of the heat-emitting pattern is prevented from deforming under high-temperature operation because of the use of a heating means formed with a heat-emitting-pattern protecting layer for protecting the heat-emitting pattern, and in that carbon dioxide concentrations can be measured in a stable fashion because the effect of the outside environment is minimised and a stable operating temperature is provided. Moreover, the carbon dioxide measurement device of the present invention is advantageous in that it allows enhanced productivity since the manufacturing operation is outstandingly reproducible and it can readily be mass-produced, and in that a high level of durability can be obtained. |
