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一、影响天平灵敏度的原因影响天平灵敏度的因素是多方面的,根据杠杆平衡原理和灵敏度定义,可导出灵敏度理论公式(推导略):E_n=al/(1)λ[(Q_0+Q+P_0+P)h_m+Rh_cGh_e]式中:a——横梁臂长,mm;l——从支点刀刃到指针尖端的长度,即指针长度,mm;h_c——横梁重心到支点的距离,即重心距,mm;R——横梁的质量,g;G——游码的质量;h_e——标尺上游码的重心到支点
First, the impact of the sensitivity of the balance The factors that affect the sensitivity of the balance are many, according to the principle of lever balance and the definition of sensitivity can be derived sensitivity theory formula (deduction omitted): E_n = al / (1) λ [(Q_0 + Q + P_0 + P) h_m + Rh_cGh_e] Where: a - beam arm length, mm; l - from the fulcrum blade to the tip of the pointer length, that pointer length, mm; h_c - beam center of gravity to the fulcrum distance, that is, the center of gravity , mm; R - the quality of the beam, g; G - the quality of the travel code; h_e-- the center of gravity of the code upstream of the scale to the fulcrum