比率计是化工生产一种常用的仪表,一般仪表书上都曾介绍其调较方法。书本上的方法是:送零位指示电阻值,调零位电阻(R_1);送满度指示电阻值,调刻度电阻(R_5),反复调到合格为止。但对没有经验的同志来说,这个反复需要很多次,很费时间。经过反复实践,根据比率计的结构特点,我们采用的调校方法是: 1.用电阻箱代替R_5,并放在200Ω左右(理论上可放在任一值),送红线刻度上的 Ratio meter is a commonly used chemical production of the instrument, the instrument has been introduced on the general method of adjustment. The method on the book is: Send zero indicating resistance value, zero adjustment bit resistance (R_1); send fullness indicating resistance value, adjusting scale resistance (R_5), repeatedly transferred to pass. But for those inexperienced comrades, this takes many times and is time-consuming. After repeated practice, according to the ratio of the structural characteristics of the meter, we use the adjustment method is: 1. Instead of R_5 resistance box, and on the 200Ω (theoretically any value), send the red line on the scale