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Combustable Dust Monitor

  1. Jun 4, 2013 #1
    I have been tasked with what seems an almost impossible feat. It sounds simple but for some reason it is not.

    I am looking for a device that can monitor combustible dust, in this case wood dust from pellets. It must be able to handle concentrations of 50g/m^3. The area to be monitored is a coal bunker, roughly 80’ tall and 20’x50’.

    And most important it must be intrinsically safe! This has been my biggest problem. I have found a handful of suitable monitors yet they are not intrinsically safe. Who designs a combustible dust monitor that could end up being the source of an explosion?!

    Any help would be greatly appreciated.
     
  2. jcsd
  3. Jun 4, 2013 #2
    These guys might have something that would suit your needs:

    Omega
     
  4. Jun 4, 2013 #3
    Unfortunatly they dont deal with dust monitors.
     
  5. Jun 4, 2013 #4

    etudiant

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    Would the old Davis lamp perhaps work for you?
    It was admittedly used for combustible gas, rather than dust, but I would think that fine dust would be pretty equally diffused in a factory setting and would pass pretty reliably through the screen mesh of a Davis lamp.
     
  6. Jun 4, 2013 #5

    berkeman

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    If the coal dust is the only particulate matter in the air in that enclosure, maybe think about using a scanning laser beam and optical monitoring to figure out the density of dust in the air... Very intrinsically safe.
     
  7. Jun 6, 2013 #6
    Yes it would work, But I cant find a product that exists.
     
  8. Jun 9, 2013 #7

    etudiant

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    Something like this? http://www.ducon.com/MIP%203188AZL.php [Broken]
     
    Last edited by a moderator: May 6, 2017
  9. Jun 9, 2013 #8

    Bobbywhy

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    That monitor was looking ideal for the application, until I noticed in the specifications: "Maximum dust = 2g per cubic liter. The OP is asking to monitor up to 50g per cubic liter.
     
    Last edited by a moderator: May 6, 2017
  10. Jun 10, 2013 #9

    Borek

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    No, per cubic meter! That's 0.05 g/L.
     
  11. Jun 10, 2013 #10

    Bobbywhy

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    OOPS! Sorry. Thanks for catching my mistake.
     
  12. Jun 10, 2013 #11
    Very Intresting. I will contact the manufacturer! Thanks!
     
    Last edited by a moderator: May 6, 2017
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