Lab.Oven
in [Design]
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From: john on 14 Apr 2010 18:20 Hi, Can anyone recommed an affordable Lab. oven to test the printed circuit boards in different temparature ranges. I am also trying to encapsulate the printed circuit boards into thermal conductive epoxy and heat the board for atleast an hour to dry the epoxy. Thanks John
From: Michael A. Terrell on 14 Apr 2010 20:15 john wrote: > > Hi, > > Can anyone recommed an affordable Lab. oven to test the printed > circuit boards in different temparature ranges. I am also trying to > encapsulate the printed circuit boards into thermal conductive epoxy > and heat the board for atleast an hour to dry the epoxy. Harbor Freight sells a small powder coat oven with a digital temperature control that might be what you need. It has a digital temperature controller, and a fan to pull fumes out of the cabinet. http://www.harborfreight.com -- Lead free solder is Belgium's version of 'Hold my beer and watch this!'
From: Spehro Pefhany on 14 Apr 2010 21:15 On Wed, 14 Apr 2010 15:20:53 -0700 (PDT), the renowned john <conphiloso(a)hotmail.com> wrote: >Hi, > >Can anyone recommed an affordable Lab. oven to test the printed >circuit boards in different temparature ranges. I am also trying to >encapsulate the printed circuit boards into thermal conductive epoxy >and heat the board for atleast an hour to dry the epoxy. > >Thanks >John Hmm.. what's affordable? Used lab ovens for reasonable prices (a few hundred dollars up), in various conditions, can be found on ebay. If you need an environmental chamber that will cover something like -40C to 150C, you'll need one with refrigeration. Different (less desirable) refrigerants are required to get to very low temperatures like -55C. Humidity is another popular variable to control and it doesn't add much to the cost. A really useful feature is vacuum (high altitude testing etc), but that increases the cost considerably. If you want to run tests with the boards powered, make sure there is a convenient way to get test cables out. Not all ovens have this feature. One way is to have a hole with a silicone rubber bung in it. A light and non-fogging window is handy. A new one with everything but vacuum would probably run around $10K-15K and up, depending on size etc. Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" speff(a)interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
From: Artemus on 14 Apr 2010 22:18 "john" <conphiloso(a)hotmail.com> wrote in message news:4c51e874-8163-489e-bf51-6613e5ecd2ea(a)v13g2000vbf.googlegroups.com... > Hi, > > Can anyone recommed an affordable Lab. oven to test the printed > circuit boards in different temparature ranges. I am also trying to > encapsulate the printed circuit boards into thermal conductive epoxy > and heat the board for atleast an hour to dry the epoxy. > > Thanks > John Where are you? I'm in the Portland OR area. I have an American Scientific DX-60 oven I don't need and will sell reasonably cheap. Room to 300�C (no cooling). Inside dimensions 23"w x 19"h x 20"d. 120V 60Hz. Art
From: Spehro Pefhany on 14 Apr 2010 22:49
On Wed, 14 Apr 2010 19:18:58 -0700, the renowned "Artemus" <bogus(a)invalid.org> wrote: > >"john" <conphiloso(a)hotmail.com> wrote in message >news:4c51e874-8163-489e-bf51-6613e5ecd2ea(a)v13g2000vbf.googlegroups.com... >> Hi, >> >> Can anyone recommed an affordable Lab. oven to test the printed >> circuit boards in different temparature ranges. I am also trying to >> encapsulate the printed circuit boards into thermal conductive epoxy >> and heat the board for atleast an hour to dry the epoxy. >> >> Thanks >> John > >Where are you? I'm in the Portland OR area. >I have an American Scientific DX-60 oven I don't need and will sell >reasonably cheap. Room to 300�C (no cooling). Inside dimensions >23"w x 19"h x 20"d. 120V 60Hz. >Art ^^^^^^^^^ This is an important thing to check.. many of the larger ones you might get cheap on eBay require 3-phase power, so check the voltage and type of power required, and the current rating. The one I bought recently uses 3-phase 208 and we had to run a new circuit for it ($$#$ industrial elecricians seem to charge by the phase). Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" speff(a)interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com |