对JJG505-87直流比较仪式电位差计检定规程的某些条文说明如下: 1.由于一般使用者和检定人员不容易搞清楚各种误差因素与总测量误差的关系,因此,本规程把比较仪式出位差计的各项误差指标如恒流源的噪声和漂移、测量电阻的自热漂移、测量盘的线性误差、电位差计的零点漂移、磁调制器的跟踪误差等不同计量单位的指标都统 JJG505-87 DC comparator rhythm test procedures for the verification of certain provisions are as follows: 1. Since the average user and the verification staff is not easy to figure out the relationship between the various error factors and the total measurement error, therefore, the rules of the comparative ritual Various error indicators such as constant current source of the noise and drift of the constant current source, measuring the resistance of self-heating drift, measuring the linear error of the disk, zero drift of the potentiometer, magnetic modulator tracking error and other indicators of different units of measurement All systems