Automation of a low-temperature calorimeter Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/vt150m817

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  • An adiabatic calorimeter operating over the range 5 to 300 K has been automated. Instrumentation includes computer controlled data acquisition, a low-thermal emf multiplexer for switching low-level dc signals, and automatic analog shield controls. Temperature measurements are made with platinum and germanium resistance thermometers, and the thermometer resistances are determined with a programmable dc voltage source and a digital nanovoltmeter. Heat capacity measurements of benzoic acid agree to within ±0.1 per cent at 300 K with accepted values. Accuracy is equal to the manual method from 5 to 50 K, and greater than the manual method from 50 to 300 K.
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  • description.provenance : Submitted by Sergio Trujillo (jstscanner@gmail.com) on 2013-08-26T20:55:15Z No. of bitstreams: 1 BeyerRichardPrendergast1982.pdf: 1564870 bytes, checksum: e5bd98ab540a109f81d6b7ce314e285e (MD5)
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  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2013-08-26T21:40:48Z (GMT) No. of bitstreams: 1 BeyerRichardPrendergast1982.pdf: 1564870 bytes, checksum: e5bd98ab540a109f81d6b7ce314e285e (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2013-08-27T19:07:13Z (GMT) No. of bitstreams: 1 BeyerRichardPrendergast1982.pdf: 1564870 bytes, checksum: e5bd98ab540a109f81d6b7ce314e285e (MD5)

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