Keithley 2182A Nanovoltmeter

Overview

The Keithley 2182A is a precision two-channel nanovoltmeter designed for stable, low-noise voltage measurements in demanding metrology, nanotechnology, and research applications. It offers nanovolt-level sensitivity combined with fast measurement speeds and exceptional noise performance, making it ideal for characterizing materials and devices with extreme measurement requirements.

Key Features

• Two-channel configuration for measuring voltage, temperature, or resistance ratios independently
• Nanovolt sensitivity from 1nV to 100V measurement range
• Exceptionally low noise: 15nV p-p typical at 1s response time, 40-50nV p-p at 60ms
• Delta mode with 30nV p-p noise for resistance measurements with reversing current sources up to 24Hz
• 110dB NMRR with line synchronization for minimizing AC common-mode currents
• 2ppm accuracy for precision metrology applications
• Built-in thermocouple linearization and cold junction compensation
• Flexible speed/noise trade-offs with selectable response times for optimal performance
• Performs voltage measurements, temperature measurements, and resistance ratio calculations
• High measurement speeds for increased throughput in production and research environments

Applications

• Voltage standard intercomparison and calibration in metrology labs
• Direct measurement of resistance standards
• Carbon nanotube and silicon nanowire resistance characterization
• Low-resistance measurements on filled plastics and composite materials
• High and low temperature superconductor characterization
• Thermoelectric EMF measurement and cancellation
• High-precision materials research and development