烟尘滤筒称重方法的改进

针对在烟尘测试中滤筒的称重存在天平显示不稳、恒重难的现象进行了探讨。比较了2种称量方法，提出在平衡室中冷却、称量滤筒，并采用标准滤筒来减小由于称重条件不同而产生的系统误差。结果表明，改进方法具有称量稳定、易恒重、失重少的优势。

Improvement on Methods of Weighing Filter Tubes of Fume

The paper discusses that balance is unstable and therefore difficult to obtain the constant value when weighing filter tubes in the process of monitoring fume. Two weight method are contrasted. It is suggested to cool and weigh filter tubes in balance lab and adopt standard filter tube to minimize system error caused by different weighing condition. The results show that the improved method has three advantages, stable to weigh, easy to obtain constant weight and less to lose weight.