Can I operate my precision balance in a fume hood? Can air drafts influence my results?
我可以在通風櫃裡操作精密天平嗎？空氣氣流是否會影響結果？
Air drafts can certainly influence your precision scale or balance and hence affect your results. Air drafts act on the sample, the container and the weighing pan, exerting an additional force on the precision weighing cell that the balance interprets as weight. Particularly when using a precision balance with a readability of 1 mg, or even 10 mg, this additional weight force can be significant, affecting the accuracy of your results. Lower readability precision balances have a draft shield fitted for this reason. METTLER TOLEDO's Excellence level precision balances and precision scales are fitted with the SmartPan weighing pan. This unique weighing pan reduces the influence of air drafts on the precision weighing cell, minimizing the associated errors. Thanks to faster settling times, SmartPan makes it possible to deliver results in half the time compared to a standard weighing pan. Under harsh weighing conditions (inside a safety cabinet), results on a 1 mg readability precision balance with SmartPan show an outstanding 86% improvement in repeatability compared to a standard weighing pan.    The extraordinary stability provided by SmartPan also enables you to weigh with the draft shield open, minimizing process steps and further helping to speed up operations.  Under normal weighing conditions, a 1 mg readability precision balance with SmartPan can even be used without a draft shield.       Download our white paper to learn more about SmartPan:
Outstanding Weighing Performance – Even Under Harsh Conditions.
空氣氣流當然會影響精密磅秤或天平，因此也會影響結果。空氣氣流會對樣品、容器和秤盤產生作用，對精密稱重單元額外施力，天平會將此力道解讀為重量。特別是使用可讀性 1 mg 甚至 10 mg 的精密天平時，這股額外的重力會很大，影響結果的準確性。可讀性較低的精密天平，因此裝有防風護罩。 METTLER TOLEDO 的 Excellence 級精密天平和精密磅秤，配有 SmartPan 秤盤。這款獨特的秤盤，減少了空氣氣流對精密稱重單元的影響，將相關的誤差減到最低。由於穩定時間較快，SmartPan 比標準秤盤更快提供結果，快了一半。在嚴苛的稱重條件下 (安全櫃裡)，可讀性 1 mg 的 SmartPan 型精密天平，重複性比標準秤盤提升 86% 之多。SmartPan 提供極高穩定性，這還能讓您在防風護罩打開的情況下稱重，徹底減少流程步驟並進一步協助加快作業。 正常稱重情況下，可讀性 1 mg 的 SmartPan 型精密天平，不用搭配防風護罩就能使用。   下載我們的白皮書深入瞭解 SmartPan：
卓越的稱重效能 – 嚴苛條件下也不例外。    The extraordinary stability provided by SmartPan also enables you to weigh with the draft shield open, minimizing process steps and further helping to speed up operations.  Under normal weighing conditions, a 1 mg readability precision balance with SmartPan can even be used without a draft shield.       Download our white paper to learn more about SmartPan:
Outstanding Weighing Performance – Even Under Harsh Conditions.