The model 6650A is a low cost Dual Source High Resistance Meter using the preferred “Dual Source” method for measuring High resistances in the range of 100kΩ to 10PΩ. The simplified construction and operation of the 6650A offers much improved operation and performance over the typical teraohmmeter/electrometer, with a more user friendly approach to high resistance measurements. The 6650A has numerous advantages over single input devices like the typical teraohmmeter/electrometer such as reliability, traceability and the fact that measurements are not dependant on short term stability or repeatability of the measurement circuit.

By utilizing a true “Bridge” measurement circuit, the UUT is compared to a working or primary standard to produce a “Live Ratio”. Any value resistor up to and including the 1017 Ω level can be measured at ratios up to 100:1 and voltages up to 1000VDC. Other commercially available units are limited within this range and do not allow the full freedom that the MI 6650A can offer! 

The 6650A is enabled with numerous measurement functions that allow users to tailor their measurements for their own particular needs.

Specifications:

1. Uncertainty Confidence Level: 99%
2. Uncertainties relative to calibration standards used and are independant of reference resistor or UUT uncertainty contributors.
3. Does not include settle time, dielectric or voltage coefficient etc. for the resistor being measured.