Liquid is wine stored in tanks and the range of temp. is from 10 to 30 degrees. Regarding the response time isn't that important, because it's a huge mass of liquid. I have to check the temperature at a point located at the center of the mass of liquid. This point is about 3 meter from the top cover of the tank. I guess one stainless steel tube could be a good solution, but one point to work out is how to keep the sensor in contact with the end of the tube, is there any kind of glue with a good thermal conductive coeficient?. >From: Spehro Pefhany >Reply-To: pic microcontroller discussion list >To: PICLIST@MITVMA.MIT.EDU >Subject: Re: [EE]:Measure liquids temperature with 18S20 >Date: Tue, 13 Aug 2002 17:42:19 -0400 > >At 05:44 PM 8/13/02 -0300, you wrote: >>What temperature range do you have to cover > >And what is the liquid? Human blood? 120'C fuming Nitric acid? Sewage? >Food? A microbial cell culture? The water in a hot tub? (same thing?) > >Any kind of sheath is going to slow down the response, and you have to >make sure that any materials that are in contact with the liquid are >compatible with it. Industrially, the most common probe material is >probably 300-series stainless steel tubing, TIG welded, which meets >NSF standards for food contact as well as being resistant to a lot of >common chemicals under normal conditions. > >Best regards, > >Spehro Pefhany --"it's the network..." "The Journey is the >reward" >speff@interlog.com Info for manufacturers: >http://www.trexon.com >Embedded software/hardware/analog Info for designers: >http://www.speff.com >9/11 United we Stand > >-- >http://www.piclist.com#nomail Going offline? Don't AutoReply us! >email listserv@mitvma.mit.edu with SET PICList DIGEST in the body _________________________________________________________________ MSN Photos is the easiest way to share and print your photos: http://photos.msn.com/support/worldwide.aspx -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu