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    <div class="moz-cite-prefix">Hi Jerry,<br>
      We have two systems at The Molecular Foundry, an older Honeywell
      Analytics (about 6-7 years old and a newer system (1-2 years old).<br>
      <br>
      They operate similarly to what you describe, except ours can be
      read remotely in locations immediately outside the lab enclosure
      where sensor are located, as well as at kiosk-type video panels
      that allow the FD to see what is in alarm, where its located, and
      the detection level (the FD likes this since they can make a
      determination of how to proceed without visiting the detection
      location).<br>
      <br>
      Hope this helps...<br>
      <pre class="moz-signature" cols="80">David A. Bunzow
User Facilities Program Manager
The Molecular Foundry
Materials Science Division
Lawrence Berkeley National Laboratory
1 Cyclotron Road        MS 67-3207
Berkeley, CA   94720

Office:  510-486-4574
FAX:  510-486-7424
Cell:  510-542-1747
</pre>
      On 8/8/2012 10:13 AM, Bowser, Jerry wrote:<br>
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    <blockquote
cite="mid:01F47D4EDEEC64488C10B767D15E4858100F89E1A6@MBCLUSTER.xchange.nist.gov"
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        <p class="MsoNormal"><span
            style="font-family:"Verdana","sans-serif"">Hello
            All,<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
            style="font-family:"Verdana","sans-serif"">I
            wanted to survey the group for information regarding the
            type and brands of toxic gas monitoring control systems in
            use.  <o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
            style="font-family:"Verdana","sans-serif"">Here
            at the CNST, we use various gas sensors (about 55) connected
            to a custom PLC based system that is just about at
            capacity.  If a gas is detected, the system shuts down gas
            cabinets, sounds alarms, and alerts our fire department. 
            The major shortfall of the system is that the detection
            level can be read at the sensor in the detection zone but is
            not displayed at the control interface.  <o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
            style="font-family:"Verdana","sans-serif"">Before
            we decide on upgrading or replacing our control system, I
            thought I would see what others are currently using.  Thanks
            for your input.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
            style="font-family:"Verdana","sans-serif"">Jerry<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
            style="font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
            style="font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
            style="font-family:"Verdana","sans-serif"">*******************************************<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-family:"Verdana","sans-serif"">Jerry
            Bowser<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-family:"Verdana","sans-serif"">NanoFab
            Operations Group<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-family:"Verdana","sans-serif"">Center
            for Nanoscale Science and Technology<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-family:"Verdana","sans-serif"">National
            Institute of Standards and Technology<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-family:"Verdana","sans-serif"">Phone:
            (301) 975-8187<o:p></o:p></span></p>
        <p class="MsoNormal"><o:p> </o:p></p>
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      <pre wrap="">_______________________________________________
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