Some other possibilities along the same lines: HMI 1) Keep AW/WPs in protected area and extend video/keyboard cables to work area. 2) For longer distances between video/keyboard and AW/WP consider CAT5 or fibre KVM extenders. 3) Use inexpensive thin clients for the plant floor -- diskless, fanless, low heat output, either running as an x-terminal or with x-terminal emulator, or with Citrix. 4) The "Roll Away" silicone keyboards work well in terrible environmental conditions. They can be easily glued to a plant area work surface with RTV. They can be used with Sun equipment with a PC keyboard to Sun computer adaptor (Raritan sells one). They are cheap enough that they can be thrown away and replaced if they are damaged. 5) Harsh environment touchpads, mice and other pointing devices are available from a variety of manufacturers, Foxboro sells the Durapoint devices wired for use with Sun computers. I/O 1) I/O cabinets can be sealed, just engineer properly for heat load. Regards, Kevin FitzGerrell Systems Engineer Foxboro New Zealand ------------------------------------ Tel: +64 (9) 573 7690 Fax: +64 (9) 573 7691 "Jones, Charles R. (Chuck)" To: "'foxboro@xxxxxxxxxxxxx'" <foxboro@xxxxxxxxxxxxx> <CRJones@xxxxxxxx> cc: Sent by: Subject: Re: [foxboro] Fwd: Message submitted to 'foxboro' foxboro-bounce@fre elists.org 18/06/2002 02:59 Please respond to foxboro Joen, I learned of an alternative solution two years ago at the International Convention from a man from South Africa. Their plant made detergents for a major manufacturer and I wish that I could remember his name to give proper credit to him. As I recall, what his plant does is to use Intel machines running Xwindows in the harsh environments of the production floor. They cost less than one-tenth the cost of environmentally-hardened machines. He figured that even if he had to replace the workstations every year, it would still be ten years before he accrued the cost of hardened systems. And at each replacement, the workstation was upgraded to the latest technology available for that cost. Note that this solution only works in an environment where the workstation is the only thing that needs protection, and not the environment itself. This would not work in an environment where the atmospheric dust could be potentially explosive. Chuck Jones Refinery Automation Technologist A.E. Staley Mfg. Co. -- Lafayette South Plant 765.477.5324 - Office | 877.536.9219 - Pager -----Original Message----- From: Duc M Do [mailto:duc@xxxxxxxxxx] Sent: Sunday, June 16, 2002 9:33 PM To: Foxboro Mailing List Subject: [foxboro] Fwd: Message submitted to 'foxboro' > > Hi guys, > > > > I would like to have some info if any of you have DCS operational > > problems related to harsh environment condition such as severe > > dust/particulate emmission from the plant and how you guys cope > > with that > > > > Thanks for invaluable information > > joen > > > >// eompost 3D0D4954:66FB.1:sbkobeb _______________________________________________________________________ This mailing list is neither sponsored nor endorsed by Invensys Process Systems (formerly The Foxboro Company). Use the info you obtain here at your own risks. 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