X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f X-Recipient: geda-user AT delorie DOT com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; bh=MMVrsyWyq8VJBi4VsPVvwjl/nMkG1eu5lKQw7OpGVds=; b=PLV34HG4I4ApMU9p6ytcuEXg3SI5YP6fFlj9LfLgBwq4p09Qv3GsCNKcXBWv1kTto2 FcuGfRPkHn8ZZIYrCROvsCPzTiYB2P4mnkmFm+RWtlpDYOpoSSlHpO4PdyEjx8siI9LZ 1sN4AWV1zq10OftYX76FA8hnx5Tvm9L/obrfCa5qEVI/vmcThS7Z3U4pw2DNEXjMzE1t DY9IUcUs2hHpVbUjH71FzSfe99ZPuG7AXi29GOITJiaS9lCaJvbqKeJim8TGxRJRe9kH byjelCdOCZ/wJhwICS56WDUyHzy4V58GHObLdgZkkHRjfgE06K+VgblSm7KzD4FUBdbg CSlQ== MIME-Version: 1.0 X-Received: by 10.112.78.37 with SMTP id y5mr8335757lbw.91.1425570500139; Thu, 05 Mar 2015 07:48:20 -0800 (PST) In-Reply-To: References: Date: Thu, 5 Mar 2015 10:48:20 -0500 Message-ID: Subject: Re: [geda-user] [OT] Temperature sensor and control recommendation From: Evan Foss To: geda-user AT delorie DOT com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id t25FmPtU007278 Reply-To: geda-user AT delorie DOT com Errors-To: nobody AT delorie DOT com X-Mailing-List: geda-user AT delorie DOT com X-Unsubscribes-To: listserv AT delorie DOT com Precedence: bulk How much control do you have over the chamber itself? Is it already designed and built or can you change it? I am not suggesting you change it's dimensions only it's construction. Thermal mass can really help in these situations. On Thu, Mar 5, 2015 at 10:34 AM, Adrian Pardini wrote: > Hello all. > > I'm facing the need to control the temperature of a small sample in a > chamber between room temperature and about 450°C with a precision of > 0.3°C or better. > So far my research led me to consider RTDs or thermocouples to sense > and the controllers range from standard PID to more complex algorithms > implementing predictive control or fuzzy logic. > > I'd like to hear about your experiences or opinions on the subject, > sensing technologies, control systems, lab-grown devices, etc. > > Regards. > > > -- > Adrian. > http://ovejafm.com > http://elesquinazotango.com.ar > http://www.elarteylatecnologia.com.ar > -- Home http://evanfoss.googlepages.com/ Work http://forge.abcd.harvard.edu/gf/project/epl_engineering/wiki/