A humidifier in which the temperature of the humidified gases leaving the humidifying chamber of the humidifier is measured. The measured temperature is compared with a predetermined temperature required for a minimum humidity level for humidified gases supplied to a patient and if the measured temperature...http://www.google.com.au/patents/US5529060?utm_source=gb-gplus-sharePatent US5529060 - Humidifiers with control systems to prevent condensation
