Since its introduction in 1993, the 6011 series of range extenders has earned a worldwide reputation for performance, dependability and quality, and as a result it is the range extender of choice for electrical calibration throughout government and industry. The model 6011 uses the ratio of two windings on a DC Current Comparator (DCC) to measure the ratio of two currents. The 6011 series of products are used to divide high currents down to workable levels. Measurements International is the only commercial laboratory tht can provide accredited ratio calibrations to 0.2 ppm.

Today, the 6011 series of range extenders offer even more. In addition to dependability, simplified calibration, easeof-use, automation and worldwide support, the 6011 is the BEST and ONLY Range Extender that offers complete automation with uncertainty specifications that rival anything available on the market today. Customers can get all the performance they need to calibrate their most demanding workload. Typical applications are shown below for current source calibration using the 6511D with it built in current source to 10A (Fig 1) and the 6011D with an external current source, Model 6150, (Fig 2).