Keithley 2182A Nanovoltmeter

The Keithley 2182A Nanovoltmeter is a cutting-edge, two-channel device optimized for stable, low-noise voltage measurements, making it the ideal choice for reliably characterizing low-resistance materials and devices. With superior measurement speed and significantly better noise performance than alternative solutions, this nanovoltmeter represents a technological advancement in precision measurement.

Replacing the original Model 2182, the 2182A enhances capabilities with features such as pulse capability, lower measurement noise, faster current reversals, and a simplified delta mode designed for resistance measurements in combination with a reversing current source.

Key Features and Specifications:

• Low Noise High-Speed Measurements: Achieve ultra-low noise levels with typical performance of just 15nV p-p noise at 1s response time and 40-50nV p-p noise at 60ms.
• Delta Mode Functionality: Coordinates measurements with a reversing current source at speeds of up to 24Hz, delivering 30nV p-p noise (typical) for one reading, while averaging multiple readings for enhanced noise reduction.
• Synchronization to Line: Features 110dB NMRR, minimizing the impact of AC common-mode currents for accurate results.
• Dual Channel Capability: Supports measuring voltage, temperature, or the ratio of an unknown resistance to a reference resistor.
• Built-in Thermocouple Features: Includes thermocouple linearization and cold junction compensation for precise temperature measurements.
• Flexible Speed/Noise Trade-offs:
  • Adaptable speed/filter combinations enable optimization for various applications’ response time and noise level needs.
  • Select from a comprehensive range of response times to achieve ideal speed/noise trade-offs.
  • Consistently low noise levels across various response times, ensuring reliability in diverse situations.
• Metrology Applications:
  • Combines the accuracy of a digital multimeter with low noise at high speeds, perfect for high-precision metrology tasks.
  • Its low noise, fast measurement rates, and 2ppm accuracy provide an economical solution for voltage standards intercomparison and direct resistance standard measurements.
• Nanotechnology Applications:
  • When paired with the Model 622X current source or Series 2400 SourceMeter®, it becomes a highly accurate solution for measuring resistances in carbon nanotube-based materials and silicon nanowires.
• Research Applications:
  • Features 1nV sensitivity, robust thermoelectric EMF cancellation, direct display of "true" voltage, computational capabilities, and high-speed measurements, making it invaluable for characterizing materials including metals, low resistance filled plastics, and various superconductors.