Please forgive me if these items are irrelevant due to the extremes needing to be dealt with but I just saw a new board get released here a few weeks ago, and all the related things seem to be under $20 http://www.adafruit.com/index.php?main_page=adasearch&q=thermocouple And of course if anyone has some bitcoin stashed away, they will accept that for payment... On Mar 24, 2014 9:20 PM, "Lampe, Mattias SLC CT PEK" < mattias.lampe@xxxxxxxxxxx> wrote: > Hi Richard, > > my personal choice would probably be to use an integrated chip that does > everything, including D/A-conversion, e.g. the MAX6675: > > http://item.taobao.com/item.htm?spm=a230r.1.14.48.TLryFm&id=13831142184 > > Since it may be more convenient for you to use the existing DAC, you may > prefer one of the older chips with analog output, though. AD595 would be a > good choice: > > https://www.sparkfun.com/products/306 > > Of course you'll need to have a loot at the datasheets to see whether the > devices match the temperature range you need. > > Hope it helps. > > > Have a good day! > > Mattias > > > > > >-----Original Message----- > >From: sugarshot-bounce@xxxxxxxxxxxxx [mailto:sugarshot- > >bounce@xxxxxxxxxxxxx] On Behalf Of Richard Nakka > >Sent: Monday, March 24, 2014 10:33 PM > >To: sugarshot@xxxxxxxxxxxxx > >Subject: [SS2S-Main] temperature measurement > > > >For an upcoming motor test, we would like to use thermocouples > >(k-type?) to measure motor casing and nozzle temperatures. > >We would like to use an 8-channel DATAQ unit for the data acquisition. > > > >We understand there are challenges to this due to small voltage > >signal, non-linear temperature-voltage relationship and the need (?) > >for a reference junction compensation. > > > >Question to list members: Can anyone give advice on how to do this? > >What kind of amp would we need? Could anyone be of assistance in > >designing/building such? > > > > > >thanks in advance > >Richard > > >