CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Main CFD Forum

thermometers and anemometers

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   September 13, 2004, 15:59
Default thermometers and anemometers
  #1
NeOmega
Guest
 
Posts: n/a
My project focus has made dramatic shift. I now need to model a server farm. I'd like to have accurate measurements of temperature and pressure from the power supply fans of the individual server stations.

Anyone have any suggestions as to the physical tools I should get? I'll need a thermometer, and an anemometer I think, but very delicate ones.

There is probably about 80 servers in an 18 cubic meter room, and ambient temperature right now, because of four fans pumping out air, is 28 degrees Celcius.
  Reply With Quote

Old   September 16, 2004, 00:22
Default Re: thermometers and anemometers
  #2
rio chen
Guest
 
Posts: n/a
You can use thermal couples or thermistors to measure temperature. They can be made really small. furthermore, some power supplies (ATX/SFX/WTX form factor) even have their own temperature sensor and fan speed control mechanism. From the fan speed, you might be able to figure out the pressure difference. With these power supplies, you can write some server/client program to communicate with each power supply to determine temperature and pressure information. This might be the easiest way. Otherwise, you will have to build measurement circuits, which can be really messy.
  Reply With Quote

Old   September 16, 2004, 14:02
Default Re: thermometers and anemometers
  #3
NeOmega
Guest
 
Posts: n/a
Thanks rio... unfortuantely this server farm is a hodge-podge of computers and servers, ranging from 1993 - 2004... not all of them have on-board diagnostics.

I am looking at getting a thermo-anemometer for about $350.... but it may not be precise enough.

"Otherwise, you will have to build measurement circuits, which can be really messy."

Before I ask my boss for a purchase order, could you possibly explain why a thermo-anemometer would not be able to do the job? (I am really afraid of buying something I wouldn't be able to use effectively)

Thanks for your help.
  Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 12:42.