Keithley 6485 Picoammeter, 5.5 Digit, 10fA Resolution

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Manufactured by: Keithley

Category: OhmMeters, AmMeters

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Keithley 6485 Picoammeter

Experience unmatched precision in sensitive current measurement with the Keithley 6485 Picoammeter. Leveraging Keithley's extensive expertise, this instrument delivers enhanced speed and a robust design, making it an ideal choice for professionals seeking reliable low current measurements.

With a remarkable range of eight current measurement options, the Keithley 6485 Picoammeter is capable of measuring currents from 20fA to 20mA, backed by high-speed autoranging that allows for lightning-fast readings of up to 1000 readings per second.

The unparalleled 10fA resolution and superior sensitivity enjoy a prominent place in characterizing low current phenomena, while the expansive 20mA range caters to applications such as 4-20mA sensor loop measurements. Unlike traditional DMMs that utilize shunt ammeter circuitry, the Keithley 6485 employs a feedback picoammeter design. This innovative approach drastically reduces voltage burden, achieving less than 200µV on lower measurement ranges, allowing for high-accuracy current measurements even within low source voltage circuits.

Key Features and Specifications

    • Cost-effective low current measurement solution
    • Scaled Voltage Analog Output for data transmission to DMMs, data acquisition boards, oscilloscopes, or strip chart recorders
    • 220V overload protection for user safety
    • Intuitive one-touch front panel design for easy configuration without navigating complicated menus
    • Built-in trigger link interface for effortless synchronization with other instruments and voltage sources
    • Display on/off switch to prevent extraneous light interference with measurement accuracy
    • REL and LOG functions for relative readings and logarithmic display of current measurements
    • Resistance calculation capability by dividing an externally sourced voltage by the measured current
    • Rear panel BNC inputs for versatility in connections
    • Outstanding fA resolution
    • 5-1/2 digit resolution for enhanced accuracy
    • Low burden voltage of <200µV
    • Extremely fast measurement performance with up to 1000 readings per second
    • Integrated Model 485 emulation mode for compatibility
    • Multiple interface options including IEEE-488 and RS-232

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