quantum Hall resistance standard, von Klitzing constant, NMI resistance ratio, sub-ppm accuracy

6020Q Quantum Hall Ratio Resistance Bridge

Self-Calibration Quantum Hall Ratio/Resistance Bridge

  • NEW:
    • current algorithm following CCC methodology
    • zero-filter option
    • microcontroller
    • capacitive touchscreen and user interface
  • LEMO connectors for resistor connections
  • Quantum Hall applications, including gallium arsenide and graphene sample measurements
  • Vcr, Vxx, and Vxy measurements
  • Self-calibration of 27-bit binary wound current comparator and a nanovolt detector
  • Detector reading
  • Range: 0.1 Ω to 13 kΩ
  • Best Accuracy: < 0.015 µΩ/Ω
  • Maximum ratio: 14:1
  • Resistance range: 0.1 Ω to 13 kΩ
  • Capacitive 7″ touch screen
  • IEEE-488.2 standard
6020A DC Current Comparator Resistance Bridge front panel with capacitive touchscreen, and LEMO connectors.

6020A Resistance Ratio Bridge

  • Next generation in bridge technology:
    • NEW microcontroller for improved speed and functionality
    • NEW capacitive touchscreen with enhanced design and easy-to-use operation
    • NEW zero filter
    • NEW 1 kHz sample rate
    • NEW selectable settle time and measurement time
    • NEW MI software package
  • Range: 0.001 Ω to 13 kΩ
  • Best accuracy: < 0.025 µΩ/Ω
  • Maximum ratio: 14:1
  • IEEE488.2 Standard
  • System Integration with Measurements International (MI) Matrix Scanners and High-Current Range Extenders
  • Two selectable measurement algorithms
Automated High Resistance, Built In 4 Channel Matrix Scanner, Cutkosky/Binary Voltage Divider Technology

6000C Automated High Resistance Ratio Bridge

  • High-resistance ratio bridge
  • True ratio self calibration
  • Built-in 4-channel matrix scanner
  • Range: 10 kΩ to 1 TΩ
  • Accuracy: < 20 x 10-9 for 10 kΩ ratios
  • Accuracy < 0.5 x 10-6 for 100 MΩ
  • Linearity: < 5 x 10-9
  • Full system solutions and full system integration using MI 1000B 110 V source, 6000C software and 4200 series of matrix scanners
MI 6020HRX Extended High Resistance Ratio Bridge front panel demonstrating capability for primary standards laboratories.

6020HRX Extended High Resistance Bridge

  • Next generation in bridge technology:
    • NEW microcontroller for improved speed and functionality
    • NEW capacitive touchscreen with enhanced design and easy-to-use operation
    • NEW zero filter
    • NEW 1 kHz sample rate
    • NEW selectable settle time and measurement time
  • Range: 0.001 Ω to 1 GΩ
  • Best accuracy: < 0.02 µΩ/Ω
  • Maximum ratio: 100:1
  • Voltage: up to 1000 V
  • System integration with Measurements International (MI) Matrix Scanners and High-Current Range Extenders
  • Improved accuracy over the 6020HR
MI 6020HRX Extended High Resistance Ratio Bridge front panel demonstrating capability for primary standards laboratories.

6020HR Resistance Ratio Bridge

  • NEW:
    • Microcontroller for improved speed and functionality
    • Zero filter
    • 1 kHz Sample Rate
    • Selectable settle time and measurement time
    • Capacitive touchscreen with enhanced design and easy-to-use operation
  • Range: 0.001 Ω to 1 GΩ
  • Best accuracy: < 0.1 µΩ/Ω
  • Maximum ratio: 100:1
  • Voltage: up to 1000 V
  • System integration with Measurements International (MI) Matrix Scanners and High-Current Range Extenders
sub-µΩ/Ω resistance, NRCC design, helium recondensing, quantum Hall traceability, primary resistance standard

6200A Cryogenic Current Comparator (CCC)

  • Best Uncertainty of < 3 parts in 10-9
  • Resistance range: 0.1 Ω to 1 MΩ
  • Maximum ratio: 1000:1
  • Ratio resolution: 1 x 10-8 for all ranges
  • Helium re-condensing unit for low-loss system
  • Front panel or computer-controlled operation
  • Fully-automated system, including selection of windings
  • Designed by Dr. Carlos Sanchez
MI 6600A Dual Source High Resistance Bridge showing dual voltage source modules, coaxial connectors, and control panel.

6600A Dual Source High Resistance Bridge

  • Based on proven NMI design
  • Automatic and manual operation
  • Not affected by temperature change
  • Multiple operational modes
  • Ratio: 1:1, 10:1, 100:1, 1000:1
  • Range: 100 kΩ to 10 PΩ
  • Voltages: 1 V to 1000 V (optional 10 000 V)
  • Optional 10- and 20-channel coaxial matrix scanners
  • Optional environmental and pressure monitoring