Newsgroups: comp.robotics
Subject: RTD Signal conditioning
From: robin.hunziker@mecheng.fullfeed.com (Robin Hunziker)
Path: brunix!sgiblab!spool.mu.edu!howland.reston.ans.net!news.moneng.mei.com!uwm.edu!daffy!uwvax!gorgon!fullfeed!mecheng!robin.hunziker
Distribution: world
Message-ID: <af.5091.33.0NAF7AB9@mecheng.fullfeed.com>
References: <94115.105248AXB30@psuvm.psu.edu>
Date: Mon,  2 May 94 14:57:00 -0600
Organization: MechEng / American Society of Mechanical Engineers
Lines: 21


AXI need to do some datalogging using RTDs to measure temperature.  I
  need some circuit diagrams to get me started.  I use a Z-World
  Little Giant (a decent platform for doing mobile robotics if you
  build your own motor drivers - they have a good real-time-kernel,
  and lots of support routines. Half decent development environment
  as well - expensive thoug (compared to the 6.270 kit...)).

AXAnyway: RTD schematics wanted!  I have one op-amp available per A/D
  input for signal conditioning on board - would be neat if I could
  get away with using only that one for each channel.

AXAtle Bjanes, Sr. Eng., Hershey Foods Corp.
  axb30@psuvm.psu.edu  (717) 534-5006 (voice) (717) 534-5078 (fax)

What exactly do you need?  What type of RTDs are you using?  Burr Brown
offers some excellent RTD chips.  Call 1-800-548-6132 and ask for the
1994 Linear Products catalog.  Look at the XTR103 on page 4.194 and
bunches of chips in chapter 5.  BB's BBS is 602/741-3978.  Analog
Devices also has a very fancy RTD/processor chip, but it is pricey.

