- Cost-effective low current measurement solution
- 10fA resolution
- 5 1/2-digit resolution
- Less than 200μV burden voltage
- Up to 1000 readings/second
- Built-in Model 485 emulation mode
- IEEE-488 and RS-232 interfaces
- Analog output
- Beam monitoring and radiation monitoring
- Leakage current testing in insulators, switches, relays, and other components
- SEM beam current measurements
- Galvanic coupling measurements
- Optoelectronic device testing and characterization
- Optical fiber alignment
- Circuit test and analysis in DCLF circuits
- Sensor characterization
- I-V measurements of semiconductors and other devices
- Nanoelectronic device characterization
- Capacitor leakage
- Teaching labs
The Keithley 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 costeffective instrument can measure currents from 20fA to 20mA, taking measurements at speeds up to 1000 readings per second.
The 6485's 10fA resolution and superior sensitivity make it well suited for characterizing low current phenomena, while its 20mA range lets it measure currents high enough for applications such as measuring 4-20mA 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.
Low Voltage Burden and Higher Accuracy
While DMMs typically employ shunt ammeter circuitry to measure current, the 6485 is a feedback picoammeter. This design reduces voltage burden by several orders of magnitude, resulting in a voltage burden of less than 200μV on the lower measurement ranges. The low voltage burden makes the 6485 function much more like an ideal ammeter than a DMM, so it can make current measurements with high accuracy, even in circuits with very low source voltages
Scaled Voltage Analog Output
This output allows the 6485 to transmit measurement results to devices like DMMs, data acquisition boards, oscilloscopes, or strip chart recorders.
220V Overload Protection
This high overload protection and a robust design let the 6485 withstand abusive overflows.
One-Touch Front Panel Design
Functions can be configured easily with the push of a button, without complicated function menus.
Built-In Trigger Link Interface
The Trigger Link interface simplifies synchronizing the 6485 with other instruments and voltage sources. This interface combines six independent selectable trigger lines on a single connector for simple, direct control over all instruments in a system.
RS-232 and IEEE-488 Interfaces
These interfaces make it easy to integrate the 6485 into automated test and measurement systems.
Display On/Off Switch
For research on light-sensitive components, such as measuring the dark currents of photodiodes, the front panel display can be switched off to avoid introducing light that could significantly reduce the accuracy of the results.
REL and LOG Functions
The 6485 can make relative readings with respect to a baseline value or display the logarithm of the absolute value of the measured current.
The 6485 can calculate resistance by dividing an externally sourced voltage value by the measured current.
Rear Panel BNC Inputs
Inexpensive, easy-to-use BNC cables can be employed, rather than more APPLICATIONS expensive triax cables.
|4802-10||Keithley 4802-10 3m BNC-Male-to-Unterminated Low Noise Cable for Models 6482, 6485, and 7158||
|4803||Keithley 4803 15.2m BNC-Male-to-BNC-Female Low Noise Cable Kit for Models 6482, 6485, and 7158||
|7754-3||Keithley 7754-3 .9m BNC-Male-to-Alligator-Clips Cable||
|8607||Keithley 8607 1m 1000V Banana Cables (x2) for Series 2400 and Models 6487 and 6517B||
|8501-2||Keithley 8501-2 2m Micro-DIN-Male-to-Micro-DIN-Male Trigger Link Cable||
|8503.||Keithley 8503. 1m DIN Male-to-BNC Male Trigger Link Cable||
|CS-565||Tek Video CS-565 Connector||
|7078-TRX-BNC||Keithley 7078-TRX-BNC 3-Lug Triax-to-BNC Adapter||
|4288-1||Keithley 4288-1 Single Fixed Rack Mount Kit||
|4288-2||Keithley 4288-2 Dual Fixed Rack Mount Kit for Models 2000, 2700, and 6487||
|KPCI-488LPA||Keithley KPCI-488LPA IEEE-488.2 Interface Module for PCI Buses||
|KUSB-488B||Keithley KUSB-488B IEEE-488.2 USB-to-GPIB Interface Adapter for USB Ports||
|6485-US||Keithley 6485-US *US Government Edition* Single-Channel Picoammeter with GPIB & RS-232 Interfaces
Government-/GSA-Eligible Entities Only.
For GSA Price, Please Call
Direct: (339) 239-4066
See our GSA Listing