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
Semiconductor memory device and manufacturing method thereof
System and method for providing private demand-driven pricing
Mobile tablet information handling system support
Encoding method, decoding method, encoding device, decoding device, program, and recording medium
Method for improving the performance of browser-based, formula-driven parametric objects
Processing color and panchromatic pixels
Sensor apparatus and information processing apparatus
  Randomly Featured Patents
Data transmission system capable of carrying out a data transmission with a high security
Method and apparatus for bevelling interior angles of sheets of colored or non-colored plain glass, plate glass or flattened glass, and the product obtained
Method and system for reducing memory faults while running an operating system
Method and apparatus for upgrading reprogrammable memory contents in a PCMCIA card
Conveyor lubricant composition having superior compatibility with synthetic plastic containers
Windshield washer and wiper assembly
Method of forming substantially hillock-free aluminum-containing components
Temperature compensated surface wave device
Pharmaceutical preparation for topical administration of antigens and/or vaccines to mammals via a mucosal membrane
Malleable hockey stick blade