Comment IP Ratings and my 5p. (Score 1) 383
I don't know how international the system is but I would look at IP (Ingress Protection) ratings.
http://www.accesscomms.com.au/IP.htm This site has a good table showing how they work. I would guess you would be looking for something around the IP64 range.
My suggestion would be to build yourself a simple cupboard for your PC in the workshop out of plywood, sealing all the edges with a mastic sealent. A cable outlet can be achieved by clamping them between two bits of foam - go and have a look at the outdoor plug sockets in your local hardware store. Do something similar for the front opening to the cupboard. You could even add an IP68 swtich somewhere on the outside of the cupboard so you don't need to open the door to turn it on/off. Create something very similar for your monitor whether CRT or TFT.
Now you need to ventalate these sealed inviroments. I would get an inline extractor fan. See this to blow air from the outside in to the two enclosures. This should be the coldest supply of air available. Add a couple of outlets at the opposite ends of your cupboards, with a light dust filter over them.
You machine might run and little hotter than normal but I'm guessing your not worried about performance.
http://www.accesscomms.com.au/IP.htm This site has a good table showing how they work. I would guess you would be looking for something around the IP64 range.
My suggestion would be to build yourself a simple cupboard for your PC in the workshop out of plywood, sealing all the edges with a mastic sealent. A cable outlet can be achieved by clamping them between two bits of foam - go and have a look at the outdoor plug sockets in your local hardware store. Do something similar for the front opening to the cupboard. You could even add an IP68 swtich somewhere on the outside of the cupboard so you don't need to open the door to turn it on/off. Create something very similar for your monitor whether CRT or TFT.
Now you need to ventalate these sealed inviroments. I would get an inline extractor fan. See this to blow air from the outside in to the two enclosures. This should be the coldest supply of air available. Add a couple of outlets at the opposite ends of your cupboards, with a light dust filter over them.
You machine might run and little hotter than normal but I'm guessing your not worried about performance.
