一、概述1.测量依据JJG125-2004《直流电桥检定规程》。2.环境条件温度为(20±2)℃,湿度为(40~60)%RH。3.测量用标准器ZY4型双臂电桥校验标准器,准确度等级:0.01级。4.被测对象QJ44型直流双臂电桥,准确度等级:0.2级。5.测量方法在规定的测量条件下,采用整体检定法对直流双臂电桥进行检定,用双臂电桥校验标准器的电阻值与被检直流双臂电桥的示值相比较,双臂电桥的示值与标准器电阻值之差即为电桥的基本误差。 I. Overview 1. Measurement based on JJG125-2004 “DC Bridge Test Regulations.” 2. Environmental conditions Temperature (20 ± 2) ℃, humidity (40 ~ 60)% RH. 3. Measurement standards ZY4 double-arm bridge calibration standard, accuracy rating: 0.01 level. 4. The measured object QJ44 DC double-arm bridge, accuracy rating: 0.2. 5. Measurement methods Under the specified measurement conditions, the overall verification of the DC double-arm bridge for testing, with double-arm bridge calibration standard resistance value and was seized DC double arm bridge shows the value of comparison, The difference between the indication of the double arm bridge and the standard resistance is the basic error of the bridge.