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