Oehler O.
Bibliographic info:
Clima.Comm.Internat. October 1983 vol.17 no.10

Describes a simple device developed in the Institute for Applied Physics which is suitable for frrsh air control in air conditioned spaces. The protype instrument detects the amount of CO2 in the atmosphere on the basis of photoacoustics. Illustrates the device schematically and explains its operation.