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煤炭化驗設備--影響測氫儀的空白值因素是?

2017-03-01  來自: 華維科力 瀏覽次數:1925

煤炭化驗設備--影響測氫儀的空白值因素是?

空白是指燃燒舟中只放催化劑,不放煤祥而按照規定的試驗步驟操時,吸收管的增量。

由于試驗環境濕度發生變化時,試驗中使用的瓷舟和三氧化鎢會因吸水而影響氫測氫值的準確性,因此,我國標準規定要進行空白試驗。它不同于質量恒定試驗,在結果計算時,要減掉空白值。

影響空白值的主要因素是空氣濕度。除此之外,氧氣不純、橡皮帽受熱分解則會影響空白值的穩定。


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