MEASURING SYSTEM FOR MEASURING THE CO2 CONCENTRATION IN A CLIMATE CABINET OR AN INCUBATOR

摘要

The invention relates to a measuring system (10) for measuring the CO2 concentration in a climate cabinet or in an incubator having a radiation source (20) with an optical axis (A) and at least two, preferably three, radiation detectors (22), wherein the radiation source (20) and the radiation detectors (20) are arranged such with respect to one another that the radiation emitted by the radiation source impinges, after passing through a measurement volume (24) on the radiation detectors, wherein in each case one channel (26) having a first end (26a) and a second end (26b) is provided for each radiation detector (22), wherein the radiation detector (22) is arranged at the first end (26a) and the first end (26a) of the channel (26) is remote from the radiation source, and wherein the channels have a diameter (dK) which is smaller than the diameter (dM) of the measurement volume (24) transverse to the optical axis (4).