Resources Contact Us Home
Non-dispersive mid-infrared sensor for vaporized hydrogen peroxide

Image Number 6 for United States Patent #6875399.

A sterilization system (14) includes a sensor (10) for detection of a component, such as hydrogen peroxide vapor, in a multi-component vapor, such as a mixture of vapor hydrogen peroxide and water supplied to a chamber (12) of the system. The sensor preferably uses a wavelength range in which hydrogen peroxide strongly absorbs but other components of the vapor, such as water, do not. A suitable wavelength for detection of hydrogen peroxide is from about 7500 to about 8400 nm, since there is little absorption by water in this range. This avoids the need to use complex subtraction procedures normally used to remove the contribution of water from detected absorbance measurements. A control system (16, 30) controls operating conditions of the sterilization system, such as a heater (82), pressure release valves (74), vaporization rate of hydrogen peroxide by a vaporizer (22), and the like to maintain optimum sterilization conditions within the chamber.

  Recently Added Patents
Isolation rings for blocking the interface between package components and the respective molding compound
Pre-primed roofing membrane
Pet grooming brush and vacuum attachment
Electrode for a plasma torch
Predictive time entry for workforce management systems
Signal processing apparatus and methods
Method for counting and segmenting viral particles in an image
  Randomly Featured Patents
Article of clothing
Electrical connector assembly with pick up device
Automatic programming and simulation apparatus
Cooking aid of the lump type
Axial flow fan motor
Process for reducing the average particle size of ammonium paratungstate powders
Selector actuator for knitting members in a knitting machine
Leveraging transactional memory hardware to accelerate virtualization and emulation
Slab gel cassettes with side openings
Nucleoside derivatives and process for preparing thereof