Patent ID: 7541002

Claim:
An apparatus for determining efficiency of a vaporizer in a decontamination system, comprising: a first sensor including a capacitor, wherein an electrical property of the capacitor is used to generate a first signal indicative of the concentration of hydrogen peroxide in a liquid decontaminate before vaporization by a vaporizer; a second sensor for generating a second signal indicative of the concentration of vaporized hydrogen peroxide after vaporization of the liquid decontaminate by said vaporizer; data storage device for storing a plurality of first data values, wherein said first data values are indicative of electrical properties respectively associated with a plurality of concentrations of the hydrogen peroxide in the liquid decontaminate; a controller programmed to determine: (1) concentration of hydrogen peroxide in the liquid decontaminate (X L ) using the first signal and said plurality of first data values; (2) concentration of the vaporized hydrogen peroxide (X V ) using the second signal; and (3) actual vaporization efficiency (E A ) of said vaporizer, according to E A =X V /X L .