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
Registry key federation systems and methods
Accessing a base station
Using storage cells to perform computation
Functionalized main chain polymers
Method and system for parallelizing data copy in a distributed file system
Channel estimating method and device
Recombinant vectors for use in position-independent transgene expression within chromatin
  Randomly Featured Patents
Thermographic recording materials and coating composition therefor
Immunoassay for measuring human C-peptide and kit therefor
Process for hydrotreating heavy hydrocarbons in liquid phase in the presence of a dispersed catalyst
Engine intake passage structure of front vehicle body
Optical information recording/reproducing device
Control of elm leaf beetle via contact with a strain of Bacillus thuringiensis
Apparatus for minimizing signal degradation during the copying of video signals from one recording medium to another recording medium
Hurricane and storm protection large windows and doors
Systems, methods and apparatus of a composite X-Ray target
Method and apparatus for display image adjustment