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th0200 dc current ratio standard 测量超精密直流电流，校准精密直流电流比较仪、直流电流传感器、直流大电流源、精密直流分流器、直流功率或电能计量标准等设备
工作频率范围为 dc ～ 5 khz
测量正反向直流电流
正向直流比例精度最高可达 0.5 ppm
overview
model th0200, a series of high-precision dc current ratio standards, can measure dc current in forward and reverse directions. operating frequency range is from dc to 5 khz, primary input and secondary output are completely electrically isolated.
forward dc ratio accuracy is up to ±0.5 ppm. combine with 8½ digital multimeters (or nanovoltmeters) and 2 the model th0310 - 1 ω high-power reference resistors, to obtain self-tracking accuracy of dc current with the optimal uncertainty from 0.5 ppm to 2 ppm.
applications
● calibrate precision dc current comparators
● calibrate dc current sensors
● calibrate dc high-current standard sources
● calibrate precision dc shunts
● calibrate dc power or electrical energy
electrical specifications
general specifications
● line power: 220v ±22 v, 50hz ±2 hz
● operating environment: +18 °c to +28 °c, r·h from 20 % to 85 %, non-condensing
● storage environment: 0 °c to +40 °c, r·h <95 %, non-condensing
related products
model th0310 reference high-power standard resistors
model td2010 dc high-current standard
