PI capacitive (capacitance) position sensors are absolute-measuring, high-dynamics nano-metrology devices providing the highest linearity and accuracy. PI capacitance sensors / signal conditioner electronics make use of a high-frequency AC excitation signal for enhanced bandwidth and drift-free measurement stability (subnanometer stability over several hours). Advantages: Single & dual-plate probes for greater flexibility, bandwidth to 10 kHz, sub-nanometer resolution, custom multi-sensor electronics (analog & digital) available, closed loop motion controllers available.