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
Warm air generating apparatus, sheet feeding apparatus, and image forming apparatus including warm air generating apparatus and sheet feeding apparatus
Apparatus and method for transmitting/receiving data in a communication system
System for programming domestic appliances and method for programming assembly-line programmable domestic appliances
Laser marking of a card
Protecting information written to recording medium
Pressure roller and fixing device equipped with the same
Electronic package with fluid flow barriers
  Randomly Featured Patents
Protective role of semapimod in necrotizing enterocolitis
Method for producing organosilane
Semiconductor device development information integrating system
Compact system for lifting and moving a pressurized tank
Magnetic element and power supply
Tripod clip
4-Phenoxy-2-butene derivatives as plant growth regulators
Process for preparing .alpha.-hydroxyamides and .alpha.-ketoamides on a solid phase support
Optical sensor having dielectric film stack