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淺談實驗室全自動量熱儀性能及使用原理

发布时间：2012-05-22 点击次数：1376次

量热仪是依据中华人民共和国国家标准GB/T213《煤的发热量测定方法》、GB/T384《石油产品热值测定法》和中华人民共和国国家计量检定规程JJG672《氧弹热量计》的要求设计本仪器的热容量为12500~14000J/℃，适用于以热量计氧弹法测定不含水的石油产品（汽油、喷气材料、柴油和燃料油等）以及煤炭、焦炭、石蜡、垃圾、树叶等可燃性物质的发热量的测定。弹热值的测定是在氧弹中有过剩氧的情况下，按规定条件燃烧单位重量的试样所产生的热值，称为弹热值（以J/g或KJ/Kg表示）。

量熱儀性能特點：

1、獨家采用三桶循環水系統，可連續24小時不間斷測試樣品，信息准確直觀，自動注水，自動放水，自動攪拌，自動點火，自動打印結果。

2、全過程自動控制，具有聲響提示，故障顯示報警多項功能；可自動標定量熱儀系統的能當量（熱容量）、測量發熱量，避免了人爲誤差，准確度及精密度大大提高。

3、實驗自動冷卻校正，對環境溫度要求寬松，在提高試驗准確的同時，又保證了儀器長時間運行的穩定性。

4、實驗結果一目了然，是爲企業和大專院校科研及軍工部門設計的一種非常理想的化驗設備。

热量计热容量的测定采用在氧弹中燃烧一定量的标准苯甲酸，测量由其燃烧所产生的热量而引起热量计系统温度变化的方法来确定量热仪的热容量，即热量计系统温度升高1℃所需的热量（J），在数值上等于量热仪的热容量（J/℃）

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