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The Keithley 6517A is a 5½-digit electrometer and high resistance meter designed for low-level current, high-impedance voltage, resistance, and charge measurements. The half-rack instrument combines a low-current input amplifier with a built-in ±1 kV voltage source in a single chassis, providing the source and measurement capability needed for insulation, leakage, and resistivity testing from one unit.
Applications listed on the datasheet include low-current and high-impedance voltage, resistance, and charge measurements in physics, optics, nanotechnology, and materials science research. The 6517A is positioned for solar cell work where low voltage burden matters, for high-resistance measurements on nanomaterials such as polymer-based nanowires, and for quality control, product engineering, and production test involving leakage, breakdown, and resistance testing. Volume and surface resistivity measurements on non-conductive materials are specifically highlighted as benefiting from the alternating-polarity voltage reversal method.
ValueTronics has been a specialist source for test and measurement equipment since 1992, operating from a 20,000 sq ft secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Every electrometer that passes through the facility is inspected and performance-tested by our technicians before it is offered for sale, and condition is documented on a per-unit basis rather than estimated from a model number. That hands-on process — distinct from drop-shippers and pass-through brokers — is what stands behind every 6517A we list.
Keithley Instruments was founded in 1946 in Cleveland, Ohio, building a long reputation in low-level current, voltage, and resistance measurement. Keithley was acquired by Danaher Corporation in 2010 and, following Danaher's industrial spin-off in 2016, became part of Fortive Corporation alongside Tektronix. The Keithley brand and its electrometer product family — including the 6517A — continue under that ownership.
| Volts | |||
|---|---|---|---|
| Range | 5½-Digit Resolution | Accuracy (1 Year) 18°–28°C ±(%rdg+counts) | Temperature Coefficient 0°–18°C & 28°–50°C ±(%rdg+counts)/°C |
| 2 V | 10 µV | 0.025 + 4 | 0.003 + 2 |
| 20 V | 100 µV | 0.025 + 3 | 0.002 + 1 |
| 200 V | 1 mV | 0.06 + 3 | 0.002 + 1 |
| NMRR: 60dB on 2V, 20V, >55dB on 200V, at 50Hz or 60Hz ±0.1%. CMRR: >120dB at DC, 50Hz or 60Hz. Input Impedance: >200TΩ in parallel with 20pF, <2pF guarded (10MΩ with zero check on). Small Signal Bandwidth at Preamp Output: Typically 100kHz (–3dB). |
| Amps | |||
|---|---|---|---|
| Range | 5½-Digit Resolution | Accuracy (1 Year) 18°–28°C ±(%rdg+counts) | Temperature Coefficient 0°–18°C & 28°–50°C ±(%rdg+counts)/°C |
| 20 pA | 100 aA | 1 + 30 | 0.1 + 5 |
| 200 pA | 1 fA | 1 + 5 | 0.1 + 1 |
| 2 nA | 10 fA | 0.2 + 30 | 0.1 + 2 |
| 20 nA | 100 fA | 0.2 + 5 | 0.03 + 1 |
| 200 nA | 1 pA | 0.2 + 5 | 0.03 + 1 |
| 2 µA | 10 pA | 0.1 + 10 | 0.005 + 2 |
| 20 µA | 100 pA | 0.1 + 5 | 0.005 + 1 |
| 200 µA | 1 nA | 0.1 + 5 | 0.005 + 1 |
| 2 mA | 10 nA | 0.1 + 10 | 0.008 + 2 |
| 20 mA | 100 nA | 0.1 + 5 | 0.008 + 1 |
| Input Bias Current: <3fA at TCAL. Temperature coefficient = 0.5fA/°C. Input Bias Current Noise: <750aA p-p (capped input), 0.1Hz to 10Hz bandwidth, damping on. Digital filter = 40 readings. Input Voltage Burden at TCAL ±1°C: <20µV on 20pA, 2nA, 20nA, 2µA, 20µA ranges. <100µV on 200pA, 200nA, 200µA ranges. <2mV on 2mA range. <4mV on 20mA range. Temperature Coefficient of Input Voltage Burden: <10µV/°C on pA, nA, µA ranges. Preamp Settling Time (to 10% of final value): 2.5s typical on pA ranges damping off, 4s typical on pA ranges damping on, 15ms on nA ranges, 2ms on µA and mA ranges. NMRR: >95dB on pA, 60dB on nA, µA, and mA ranges at 50Hz or 60Hz ±0.1%. |
| Coulombs | |||
|---|---|---|---|
| Range | 5½-Digit Resolution | Accuracy (1 Year) 18°–28°C ±(%rdg+counts) | Temperature Coefficient 0°–18°C & 28°–50°C ±(%rdg+counts)/°C |
| 2 nC | 10 fC | 0.4 + 5 | 0.04 + 3 |
| 20 nC | 100 fC | 0.4 + 5 | 0.04 + 1 |
| 200 nC | 1 pC | 0.4 + 5 | 0.04 + 1 |
| 2 µC | 10 pC | 0.4 + 5 | 0.04 + 1 |
| Input Bias Current: <4fA at TCAL. Temperature coefficient = 0.5fA/°C. |
| Ohms (Normal Method) | |||||
|---|---|---|---|---|---|
| Range | 5½-Digit Resolution | Accuracy (10–100% Range) 18°–28°C (1 Yr.) ±(% rdg+counts) | Temperature Coefficient (10–100% Range) 0°–18°C & 28°–50°C ±(% rdg+counts) | Auto V Source | Amps Range |
| 2 MΩ | 10 Ω | 0.125 + 1 | 0.01 + 1 | 40 V | 200 µA |
| 20 MΩ | 100 Ω | 0.125 + 1 | 0.01 + 1 | 40 V | 20 µA |
| 200 MΩ | 1 kΩ | 0.15 + 1 | 0.015 + 1 | 40 V | 2 µA |
| 2 GΩ | 10 kΩ | 0.225 + 1 | 0.035 + 1 | 40 V | 200 nA |
| 20 GΩ | 100 kΩ | 0.225 + 1 | 0.035 + 1 | 40 V | 20 nA |
| 200 GΩ | 1 MΩ | 0.35 + 1 | 0.110 + 1 | 40 V | 2 nA |
| 2 TΩ | 10 MΩ | 0.35 + 1 | 0.110 + 1 | 400 V | 2 nA |
| 20 TΩ | 100 MΩ | 1.025 + 1 | 0.105 + 1 | 400 V | 200 pA |
| 200 TΩ | 1 GΩ | 1.15 + 1 | 0.125 + 1 | 400 V | 20 pA |
| Voltage Source | |||
|---|---|---|---|
| Range | 5½-Digit Resolution | Accuracy (1 Year) 18°–28°C ±(% setting + offset) | Temperature Coefficient 0°–18°C & 28°–50°C ±(% setting+offset)/°C |
| 100 V | 5 mV | 0.15 + 10 mV | 0.005 + 1 mV |
| 1000 V | 50 mV | 0.15 + 100 mV | 0.005 + 10 mV |
| Maximum Output Current: ±10mA, active current limit at <11.5mA for 100V range; ±1mA, active current limit at <1.15mA for 1000V range. Settling Time: <8ms to rated accuracy for 100V range; <50ms to rated accuracy for 1000V range. Noise: <150µV p-p from 0.1Hz to 10Hz for 100V range; <1.5mV p-p from 0.1Hz to 10Hz for 1000V range. |
| Temperature (Thermocouple) | ||
|---|---|---|
| Thermocouple Type | Range | Accuracy (1 Year) 18°–28°C ±(% rdg + °C) |
| K | –25°C to 150°C | ± (0.3% + 1.5°C) |
| Humidity | |
|---|---|
| Range | Accuracy (1 Year) 18°–28°C, ±(% rdg + % RH) |
| 0–100% | ± (0.3% + 0.5) |
| Humidity probe accuracy must be added. This is ±3% RH for Model 6517-RH, up to 65°C probe environment, not to exceed 85°C. |
| IEEE-488 Bus & RS-232 | |
|---|---|
| Implementation | SCPI (IEEE-488.2, SCPI-1993); DDC (IEEE-488.1) |
| Trigger to Reading Done | 150ms typical, with external trigger |
| RS-232 Implementation | Supports SCPI 1991.0 |
| Baud Rates | 300, 600, 1200, 2400, 4800, 9600, 19.2k |
Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.
Model No
Keithley
Condition
Used
Manufacturer
Keithley
30+ Years in Business
Secure Payments
Sell Test Equipments
Knowledgeable Staff
On-site Lab
30+ Years in Business
Secure Payments
Sell Test Equipments
Knowledgeable Staff
On-site Lab
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