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Indoor air quality sensor and method

  • US 5,394,934 A
  • Filed: 04/15/1994
  • Issued: 03/07/1995
  • Est. Priority Date: 04/15/1994
  • Status: Expired due to Term
First Claim
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1. An indoor air quality sensor designed to be utilized in a zone of a building to control the ventilation of the zone, comprising:

  • a primary sensor means for sensing a selected leading indicator of contamination in the zone and providing an output signal representative thereof;

    at least a first additional sensor means for sensing at least a first selected secondary indicator of contamination in the zone and providing an output signal representative thereof; and

    processor means for generating an output signal representative of the indoor air quality in the zone, receiving the output signals from the primary sensor means and the first additional sensor means and generating the output signal representative of the indoor air quality in the zone by influencing the output of the primary sensor means by an amount that is a function of the output signal of the first additional sensor means.

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