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                                                                                                                        首頁 > 新聞中心 > 靜水力學天平的使用方式可別說不知道
                                                                                                                        靜水力學天平的使用方式可別說不知道
                                                                                                                        發布日期:2022-06-13      瀏覽次數:444
                                                                                                                          靜水力學天平是用來對固體樣品進行密度、體積測試。靜水天平主要由電子天平與靜水力學裝置構成,它可以被靜水天平的稱量迅速,穩定性高,STN液晶顯示/LED顯示,操作簡單便捷。 阿基米德定律:阿基米德定律(Archimedes law)是物理學中力學的一條基本原理。浸在液體(或氣體)里的物體受到向上的浮力作用,浮力的大小等于被該物體排開的液體的重力(“Any object placed in a fluid displacesits weight;an immersed object displaces its volume.”)。其公式可記為F浮=G排=ρ液·g·V排液。
                                                                                                                         
                                                                                                                          靜水力學天平操作規程:
                                                                                                                          一、將天平置于穩定水平的工作臺上,避免震動和氣流。
                                                                                                                          二、使用環境溫度:5~35℃溫度波動每小時不大于5℃。
                                                                                                                          三、接通電源,打開開關,預熱3分鐘。
                                                                                                                          四、如果在空秤情況下顯示偏離零點,應按“去皮/自校”鍵,使顯示回到零位。
                                                                                                                          五、開始試驗操作,操作過程中嚴禁被稱物體的質量超過稱量范圍,如果超過稱量應移去稱物,以免損壞天平。
                                                                                                                          六、若稱重不準確,需對天平進行及時校正。試驗完畢,天平應用軟布輕輕擦拭,保持清潔。
                                                                                                                         
                                                                                                                          靜水力學天平吊藍在水中時應在吊藍橫旦上加上專用平衡砝碼并移動游碼,調好天平的平衡位置,向秤盤加卸砝碼時,必須從大約等于被衡量物體重量的砝碼開始,然后依次加減砝碼直到天平平衡為止。在天平未達到接近平衡狀態之前,不要馬上開天平,應緩慢地旋轉開關旋鈕,發現指針偏斜很快時,應立即關閉天平,再酌量加減砝碼。吊藍的使用步驟按“常用建筑材料試驗手冊”中標準方法進行。衡量完畢后將所稱之物質及砝碼取下,不可留置盤上。盡量避免酸堿等有害物質直接附在秤盤上。

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