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
Methods for processing 2Nx2N block with N being positive integer greater than four under intra-prediction mode and related processing circuits thereof
Control device
System and method for multi-threaded OFDM channel equalizer
Process of preparing functionalized polymers via enzymatic catalysis
Data converter with configurable functions
Nonvolatile memory device
Boring machine
  Randomly Featured Patents
Fluid injection device and medical instrument including fluid injection device
Stackable bedding foundation
Apparatus and method for midspan access of encapsulated optical fibers
Illumination device
Pulse arc welding machine
Complementary bowtie dipole-slot antenna
Junction box having function electronics
Modular block retaining wall system
Modular pump-nozzle unit for an internal combustion engine
Artificial finger print liquid, testing method for optical information medium using it, and optical information medium