Concentration measuring device

摘要

A concentration measuring device with which the concentration measurement of a test substance can be facilitated as compared to a conventional technique is provided. The concentration measuring device includes: first to third pipes together forming a circulation path through which a gas can circulate; a pump for flowing the gas in a circulating direction in the circulation path; a sample disposed in the circulation path; and a concentration measuring mechanism for measuring a concentration of a target substance from the sample in the circulation path. The concentration measuring mechanism includes, for example, a sample heater, a catalyst, a catalyst heater, a detection chamber, a concentration sensor, and a control unit.

主权项

1. A concentration measuring device comprising:
a circulation path forming member that forms a circulation path through which a gas can circulate in a closed state in which the circulation path is closed off from outside; a sample container for holding a sample provided in the circulation path; a circulation device for flowing the gas in a predetermined circulating direction in the circulation path; and a concentration measuring mechanism provided in the circulating path for measuring a concentration of a target substance from the sample contained in the gas circulating in the closed state of the circulation path.