Electrochemical Sensors

»    Accurate, signal proportional to compound concentration
»    Small, compact
»    Lowest Voltage requirement, therefore ideal for batteries.
»    Long Operational Life-time
»    Reliable
»    Cost Effective
»    Fast: response rate less than 1 minute
»    Wide Temperature range: -45C to +50C
»    Ideal for gas monitoring,
        »    Can be designed for detecting a variety of gases such as CO, O2, H2, H2S, etc.




CO Sensor

»    Detects the presence of the carbon monoxide (CO) gas in order to prevent carbon monoxide poisoning.
        »    CO is a colorless, tasteless and odorless compound produced by incomplete combustion of carbon containing materials. It is often                 referred to as the "silent killer“
»    In U.S. retail for $15–$60 USD and are widely available, can either be battery-operated or AC powered
»    In North America, detectors are required in new construction in 30 states, and 2 provinces in Canada
        »    Literally Millions of Units sold in U.S. – available at local retail stores
»    Competing Sensing Technologies
        »    Semi-conductor, Opto-chemical, Biomimetic, Electrochemical
»    Electrochemical Sensing IS the dominant technology in U.S.


Alarm Points

»    The alarm points on carbon monoxide detectors are not a simple alarm level (as in smoke detectors) but are a concentration-time function. »    Alarm points regulations are different in different countries. For example: »    In U.S. Systems: At lower concentrations (e.g. 100 parts per million) the detector will not sound an alarm for many tens of minutes. At 400 parts per million (PPM), the alarm will sound within a few minutes In U.K. Systems: They emit an audible alarm after about 3 minutes exposure to 300 ppm CO, or 10 to 40 minutes at 100 ppm, or 60 to 90 minutes at 50 ppm


Electrochemical CO Sensing

»    How: Carbon monoxide is oxidized at one electrode to carbon dioxide while oxygen is consumed at the other electrode.
»    Advantages: electrochemical cell has the following advantages over other technologies
        »    Has a highly accurate and linear output to carbon monoxide concentration,
        »    Requires minimal power as it is operated at room temperature,
        »    Long lifetime (typically commercial available cells now have lifetimes of five years or greater).
        »    Lowest Cost System
        »    This technology is now the dominant technology in USA and Europe


Other Features

»    Wireless home safety solutions are available that link carbon monoxide detectors to cell phones, vibrating pillow pads, strobes or a remote        warning handset
»    NEST has systems linked to cell phones
»    Some ‘portable’ systems are available (for niche applications)
»    Often combined with smoke detectors in many commercial systems
»    Every application is different, need to do extensive testing prior to commercial introduction


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  •           Plant & Labs:
                           105 Park Avenue,
                            Seaford, DE 19973
  •                    Tel: 302 629 5768
                         Fax: 302 629 6038
  •                  info@xergyinc.com