On the Temperature Resolution of Thermistors

  • Peter W. Carr
  • Larry D. Bowers


The past fifteen years have witnessed the development of reaction calorimetry as an analytical methodology. The applicability of such techniques as thermometric enthalpy titration (TET) (1) and direct injection enthalpimetry (DIE) (2) to clinical and biochemical problems has greatly enhanced this development. All of the above mentioned techniques most commonly utilize a thermistor as the temperature sensing element. It is well known that thermistors are among the most sensitive and simple temperature transducers available. The detection limit of these devices is controversial. Recently Lampugnani and Meites (3) have reported an 0.6 µ° C limit, while Smith, Barnes, and Carr (4) and Dohner, Wachter and Simon (5) have reported a value of 3.5 (µ° C. Considerably higher values have also been reported (6). Thus an investigation was initiated into the effect of various physical factors which might influence thermistor sensitivity.


Temperature Resolution Noise Source Voltage Noise Wheatstone Bridge Johnson Noise 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    H. J. V. Tyrrell and A. E. Beezer, Thermometric Tirrimerry, Chapman and Hall, London (1968).Google Scholar
  2. 2.
    J. C. Wasilewski, P. T. S. Pei, and J. Jordan, Anal. Chem., 36, 2131 (1964).CrossRefGoogle Scholar
  3. 3.
    L. Lampugnani and L. Meites, Thermochem. Acta, 5, 351 (1972).CrossRefGoogle Scholar
  4. 4.
    R. E. Dohner, A. H. Wachter, and N. Simon, Helv. Chim. Acta, 50, 2193 (1967).CrossRefGoogle Scholar
  5. 5.
    E. B. Smith, C. S. Barnes and P. W. Carr, Anal. Chem., 44, 1663 (1972).CrossRefGoogle Scholar
  6. 6.
    T. Meites, L. Meites and J. N. Jaitley, J. Phys. Chem., 73, 3801 (1969).CrossRefGoogle Scholar
  7. 7.
    J.J. Christensen, I. M. Izatt and L. D. Hansen, Rev. Sci. Instrum., 36, 486 (1968).Google Scholar
  8. 8.
    E.C. Robertson, R. Raspet, J. H. Swartz and M. E. Lillard, Geological Survey Bulletin 1203-B, U.S. Government Printjng Office, Washington, D.C.Google Scholar
  9. 9.
    E. J. Bair, Introduction to Chemical Instrumentation, McGraw-Hill, New York, (1962) p. 255.Google Scholar
  10. 10.
    P. W. Carr, Crit. Rev. Anal. Chem., 5, 519 (1972).Google Scholar
  11. 11.
    F. J. Hyde, Thermistors, Illiffe Books, London (1971), pp. 115–141.Google Scholar
  12. 12.
    R. A. Rasmusson, Rev. Sci. Instrum., 32, 38 (1962).CrossRefGoogle Scholar
  13. 13.
    Bair, op. cit., p. 251.Google Scholar
  14. 14.
    Ibid, pp. 254–6.Google Scholar
  15. 15.
    R. J. Reilley and L. G. Hepler, J. Chem. Ed., 49, 514 (1972).CrossRefGoogle Scholar
  16. 16.
    V. D. London, Proc. IRE, 50 (February, 1941).Google Scholar

Copyright information

© Springer Science+Business Media New York 1974

Authors and Affiliations

  • Peter W. Carr
    • 1
  • Larry D. Bowers
    • 1
  1. 1.Department of ChemistryUniversity of GeorgiaAthensUSA

Personalised recommendations