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Keithley is a world-leading manufacturer of precision electrical test and measurement equipment, specialising in solutions for semiconductor testing, materials research and electronic characterisation. Its portfolio includes source measurement units (SMUs), digital multimeters, electrometers, picoammeters, data acquisition systems and switching solutions. Trusted by engineers, scientists and researchers worldwide, Keithley instruments deliver exceptional accuracy for low-level measurements and advanced electrical testing applications.
Picoammeter
The 5½-digit 6485 Picoammeter combines Keithley's expertise in sensitive current measurement instrumentation with enhanced speed and a robust design. With eight current measurement ranges and high-speed autoranging, this cost-effective instrument can measure currents from 20 fA to 20 mA, taking measurements at speeds up to 1000 readings per second.
The 6485’s 10 fA resolution and superior sensitivity make it well-suited for characterizing low current phenomena, while its 20 mA range lets it measure currents high enough for applications such as measuring 4-20 mA sensor loops.
Although it employs the latest current measurement technology, it is significantly less expensive than other instruments that perform similar functions, such as optical power meters, competitive picoammeters, or user-designed solutions. With a price that's comparable to a general-purpose DMM, the 6485 makes picoamp-level measurements affordable for virtually any laboratory or production floor.
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