Measuring system for measuring the CO2 concentration in a climate chamber or an incubator

摘要

Measuring system (10) for measuring the CO2 concentration in a climatic chamber or incubator with a radiation source (20) having 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 relative to one another such that the radiation emitted by the radiation source strikes the radiation detectors (22) after passing through a measuring volume (24), wherein in each case a channel (26) having a first end (26a) is provided for each radiation detector (22). and a second end (26b), wherein the radiation detector (22) is arranged at the first end (26a) and the first end (26a) of the channel (26) faces away from the radiation source, and wherein the channels have a diameter ( dK), which is smaller than the diameter (dM) of the measuring volume (24) transversely to the optical axis (4), characterized in that the channels (26) have an axis (AK), wherein the axis (AK ) at least one of the channels (26) is inclined relative to the optical axis (A) at an angle (α).