http://www.mccdaq.com/usb-data-acquisition/USB-501-TC.aspx for the single one.
Really nice. $82 and can take the K-type however it does not cover the range of a K (-200 to 1250 C) which is weird. I think it means the thermocouple they provide will only take 400, not that it cant display 1200. http://www.mccdaq.com/usb-data-acquisition/USB-500-Series.aspx for the range. It says Battery-powered remote thermocouple data logger measures and records temperatures from -200 to +1300 °C Thanks Crispin +++++++++ If you need multiple thermocouples and want to have both voltage and 4-20 ma channels I recommend the Agilent 34972 multiplexer but it is closer to $2K. It is absolutely amazing in its capabilities. On the cheaper end is the OPUS 10 from Lufft. Very nice unit and completely portable. It records high, low and average for two channels. About the size of a cigarette pack. Also "Measurement Computing" do a very nice USB datalogger "USB-TC" with 8 TC inputs, of many different types. Steve
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