Keithley 261 Calibrator
The Model 261 Picoampere Source is a secondary standard for calibration of picoammeters and electrometers. It is a "passive" source, consisting of a selectable 0 to 10V voltage in series with a specially selected and tested hi-meg resistor.
| Output | 10-14 A (10-11 A full range) to 1.1 x 10-4 A, positive or negative, in eight decade ranges |
| Source Voltage | 0 to 11 V in 0.01 V steps |
| Resolution | 3 significant figures from 10-12 to 1.1 x 10-4 A |
| Range Resistors | 105 to 1012 ohms in decade steps |
| Output Isolation | Low to ground; > 109 ohms shunted by 0.001 µf |
SKU: KEIT-261