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  <front>
    <journal-meta>
      <journal-id journal-id-type="issn">2411-3336</journal-id>
      <journal-id journal-id-type="eissn">2541-9404</journal-id>
      <journal-title-group>
        <journal-title xml:lang="ru">Записки Горного института</journal-title>
        <journal-title xml:lang="en">Journal of Mining Institute</journal-title>
      </journal-title-group>
      <publisher>
        <publisher-name xml:lang="ru">Санкт-Петербургский горный университет императрицы Екатерины ΙΙ</publisher-name>
        <publisher-name xml:lang="en">Empress Catherine II Saint Petersburg Mining University</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-11388</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/11388</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Без раздела</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Without section</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Extension of the limits and improvement of the measurement accuracy of high-frequency moisture meters on the basis of an E12-1A type capacitance meter</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Расширение пределов и повышение точности измерений  высокочастотных влагомеров на базе измерителя емкости типа Е12-1А</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Kalm</surname>
            <given-names>E. A.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Кальм</surname>
              <given-names>Э. А.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Kalm</surname>
              <given-names>E. A.</given-names>
            </name>
          </name-alternatives>
          <email>pmi@spmi.ru</email>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru"/>
          </aff>
          <aff>
            <institution xml:lang="en"/>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Valeev</surname>
            <given-names>V. G.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Валеев</surname>
              <given-names>В. Г.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Valeev</surname>
              <given-names>V. G.</given-names>
            </name>
          </name-alternatives>
          <email>pmi@spmi.ru</email>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru"/>
          </aff>
          <aff>
            <institution xml:lang="en"/>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="1975-01-01">
        <day>01</day>
        <month>01</month>
        <year>1975</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>1975</year>
      </pub-date>
      <volume>68</volume>
      <issue>1</issue>
      <fpage>33</fpage>
      <lpage>39</lpage>
      <history>
        <date date-type="received" iso-8601-date="1974-07-12">
          <day>12</day>
          <month>07</month>
          <year>1974</year>
        </date>
        <date date-type="accepted" iso-8601-date="1974-09-14">
          <day>14</day>
          <month>09</month>
          <year>1974</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="1975-01-01">
          <day>01</day>
          <month>01</month>
          <year>1975</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 1975 Э. А. Кальм, В. Г. Валеев</copyright-statement>
        <copyright-statement xml:lang="en">© 1975 E. A. Kalm, V. G. Valeev</copyright-statement>
        <copyright-year>1975</copyright-year>
        <copyright-holder xml:lang="ru">Э. А. Кальм, В. Г. Валеев</copyright-holder>
        <copyright-holder xml:lang="en">E. A. Kalm, V. G. Valeev</copyright-holder>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="ru">
          <license-p>Эта статья доступна по лицензии Creative Commons Attribution 4.0 International (CC BY 4.0)</license-p>
        </license>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="en">
          <license-p>This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0)</license-p>
        </license>
      </permissions>
      <self-uri xlink:type="simple" xlink:href="https://pmi.spmi.ru/pmi/article/view/11388">https://pmi.spmi.ru/pmi/article/view/11388</self-uri>
      <abstract xml:lang="ru">
        <p>При дискретном экспрессном контроле влажности дисперсных материалов в ряде случаев используют устройства, выполненные на базе прибора Е12-1А, упрощенная схема которого показана на рисунке 1. Диапазон и точность измерений влажности материалов определяются не только конструкцией датчика, но и схемой измерительного генератора. Расширить диапазон измерения влажности и уменьшить влияние потерь можно также за счет увеличения общего коэффициента усиления каскада, например, заменой катодного повторителя апериодическим усилителем с анодной нагрузкой.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>In discrete rapid monitoring of the moisture content of dispersed materials, devices based on the E12-1A instrument, whose simplified circuit is shown in Figure 1, are in some cases used. The range and accuracy of moisture measurements of materials are determined not only by the design of the sensor, but also by the circuit of the measuring oscillator. The range of moisture measurement can also be extended and the effect of losses reduced by increasing the overall gain of the stage, for example, by replacing the cathode follower with an aperiodic amplifier with an anode load.</p>
      </abstract>
    </article-meta>
  </front>
  <body/>
  <back>
    <ref-list>
      <ref id="ref1">
        <label>1</label>
        <mixed-citation xml:lang="ru">Грошковский Я. Генерирование высокочастотных колебаний и стабилизация частоты. М., ИЛ, 1953.</mixed-citation>
        <mixed-citation xml:lang="en">Groshkovsky Ya. Generation of High-Frequency Oscillations and Frequency Stabilization. M., IL, 1953 (in Russian)</mixed-citation>
      </ref>
      <ref id="ref2">
        <label>2</label>
        <mixed-citation xml:lang="ru">Кричевский Е.С. Высокочастотный контроль влажности при обогащении полезных ископаемых. М., "Недра", 1972.</mixed-citation>
        <mixed-citation xml:lang="en">Krichevsky E. S. High-Frequency Control of Moisture Content in Mineral Processing. M., Nedra, 1972 (in Russian)</mixed-citation>
      </ref>
      <ref id="ref3">
        <label>3</label>
        <mixed-citation xml:lang="ru">Кричевский Е.С., Кальм Э.А. Устройство для автоматического контроля влажности железного концентрата. - "Обогащение руд", 1969, № 1.</mixed-citation>
        <mixed-citation xml:lang="en">Krichevsky E. S., Kalm E. A. Device for automatic control of iron concentrate moisture content. Obogashchenie rud , 1969, No. 1 (in Russian)</mixed-citation>
      </ref>
    </ref-list>
  </back>
</article>
