Keithley 485
Digital Picoammeter 4.5 Digits
Description
This Digital Picoammeter provides 100fA sensitivity with 4.5 digit resolution in a low cost, highly sensitive, easy to use instrument.
This measures DC current on 7 ranges covering 10 decades from 100fA to 2mA.
It has both excellent accuracy and low voltage burden.
The input can withstand overloads as high as 1000V for flexibility in a wide range of applications in test, research, and student labs.
An analog output linearly converts the incoming current to voltage for hard copy output or control loop applications.
Key Points
Readings can be taken from 3 readings/second to 1 reading/hour in 6 selectable ranges in data store mode
Large 4½ digit LCD provides 0.1pA resolution
Measures from 2nA to 2mA full scale with a 1 year accuracy of ±(0.4% + 4 counts) on the 2nA range (worst case)
Manual or autoranging
Polarity/range/status/
Overrange indications
Analog output
Specifications
DC current: 2nA to 2mA
DC voltage range: 50V to 350V
Number of digits: 4½ digits
Sensitivity: 100fA
