It is used to measure and analyze the respiration intensity of fruits and vegetables under storage conditions such as normal temperature, cold storage, controlled atmosphere storage, and supermarket freezers. The characteristic of the fruit and vegetable respiration intensity meter is that the respiration chambers of different volumes can be selected according to the size of the fruits and vegetables, which speeds up the balancing and measurement time; the instrument can be directly operated through a computer and simultaneously displays the CO2 concentration, O2 concentration, temperature and humidity of the respiration chamber. Curve.