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在生产实践中,往往出现测量仪表的分度号和测量范围满足不了生产的实际需要,但又没有备用表时,就只好对现有仪表加以改制;如把分度号为 G、范围为50℃的改制成分度号为 BA_1、范围为150℃的动圈仪表.这就意味着调整桥路各电阻的阻值,由于没有实际可用的桥路电阻值可供查用,必定用电阻箱代替桥路各电阻进行调试如图。
In production practice, often appear sub-degree measuring instruments and measurement range can not meet the actual needs of production, but no standby table, it had to be modified on existing instruments; such as the index number G, the range is 50 ℃ of the composition of the degree of modulation BA_1, the scope of dynamic instrument in the range of 150 ° C. This means that the adjustment of the bridge resistance of the resistance, as there is no practical bridge resistance available for investigation, we must use the resistance box instead Bridge resistance debugging as shown.