The US AutoFlow NU-4750 offers laboratory technicians an incubator which virtually runs itself to dependably control the temperature and CO2 level. A solid-state single gas analyzer, with 32-bit digital accuracy, utilizes a filter correlation technique for non-dispersive infrared analysis of CO2. The measurement of CO2 is independent of humidity and temperature variations within the chamber.
The US AutoFlow is run by a programmable microcontroller that samples input sensors, sets control outputs, makes corrections through the use of fuzzy logic, and displays status on the control panel. Ultra Smart (US) "Fuzzy Logic" provides quick, accurate, adaptive control of all the incubators parameters: chamber temperature, CO2, O2, humidity and door temperature. Fuzzy logic tolerates environmental changes and component variation. It continually adjusts and improves to provide a "living", exceptionally stable chamber environment.
The US AutoFlow NU-4850 has a relative humidity display and control system. The system controls from ambient to 95% relative humidity. The recovery time to 95% ± 2% is typically less than 10 minutes. The accuracy is ± 3% from any given set point.
The US AutoFlow employs two separate capsule HEPA filters to minimize potential contamination problems within the chamber. After a door opening, the internal recirculation system will return the chamber to better than Class 100 air quality within 30 minutes.
The US AutoFlow NU-4950 has an O2 display and control system. The system controls from 21% [ambient level] down to 2%. The recovery time from ambient to 5% ± 2% is typically less than 10 minutes. The accuracy is ± 1% from any given set point. The oxygen sensor is a fuel cell type and is unaffected by CO2, H2 or other various acidic gases.
