RESPIROMETER

摘要

PURPOSE: A creature breathing quantity measuring system is provided to accurately and consecutively measure the amount of bio gas in which microbial manufacture under an anaerobic condition and the amount of oxygen in which the microbial consumes while breathing. CONSTITUTION: A creature breathing quantity measuring system comprises a fluid pipe(20) which is connected to a microbial reaction container(10), a sensor unit(30) which is composed of a first sensor(31) and a second sensor(32) which measures the increase speed of bubbles and time from a point which detects bubbles created inside the fluid pipe to a point which detects the liquid, and a controller which calculates volume of bubbles using the measured bubble detecting time and the bubble increasing speed data. In the first and the second sensors, a sending unit which irradiates light source at one side and a receiving unit which receives the light source at the other side are installed to face each other based on the fluid pipe. The creature breathing quantity measuring system detects bubbles by using penetration sensitivity difference between a point when the fluid is fully filled and a point when the fluid is vacated by the bubbles.