The SPA 500 analysis system was developed particularly for the measurement of the oxygen content in steam-heated autolavas during the vulcanization process by rubber products by peroxide (H2O2). The duration of the flushing of the autoclaves with water vapor can be reduced by the accurate measurement of the CO2 content. This leads to a clear cost saving. The determination of the optimal starting point and the monitoring of the CO2 content during the entire curing process lead in addition to an improvement of the product quality. The analyzer is both in a stationary execution (SPA500S) and in a portable execution (SPA 500P) available.