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New hygrothermal balanced moisture meters for sheet materials

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Measurement Techniques Aims and scope

Conclusions

The investigations carried out have shown that the static characteristic of hygrothermal moisture meters for sheet materials depends strongly on the temperature of the surrounding medium, i.e., on the temperature of the investigated material. In order to eliminate the temperature error in such moisture meters it is possible to recommend a method based on use of two identical sensitive elements-resistance thermometers the first of which is in hygrothermal balance and the second of which is only in thermal balance with the investigated material.

Analysis of the static and transient characteristics of hygrothermal balanced moisture meters for cellulose, paper linen, and leather shows that the moisture meters developed can be used for other sheet materials up to their maximum hygroscopic moisture contents.

The hygrothermal method can be the basis for creating instruments for automatic monitoring and control of the moisture of solid and friable materials for which the electrical and other measurement methods for moisture measurement are unsuitable for a number of reasons.

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Literature cited

  1. M. A. Berliner, Electrical Measurements and Automatic Monitoring and Control of Moisture [in Russian], Énergiya, Moscow (1965).

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  2. Ya. I. Eligylashvili, A. Z. Yakobishvili, Paper delivered at the All-Union Scientific-Technical Conference “Growth of Analytical Instrumentation,” Tblisi (1968).

  3. M. A. Berliner and A. Z. Yakobishvili, Author's Certificate No. 214155, Byull. Izobr., No. 11 (1968).

  4. Spenser-Gregory, E. Rourke, Hygrometry [Russian translation], Metallurgizdat, Moscow (1963).

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Authors
  1. Ya. I. Eligulashvili
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  2. A. K. Khurtsilava
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Additional information

Translated from Izmeritel'naya Tekhnika, No. 12, pp. 65–67, December, 1971.

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Eligulashvili, Y.I., Khurtsilava, A.K. New hygrothermal balanced moisture meters for sheet materials. Meas Tech 14, 1891–1893 (1971). https://doi.org/10.1007/BF00994960

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  • DOI: https://doi.org/10.1007/BF00994960

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