Keithley Meters
24 models with full specifications in Meters.
This page summarizes how Keithley’s meter portfolio is organized and how to pick the right instrument for specific measurement roles: precision voltage and resistance, low-current and high-resistance work, source-measure applications, and multi-channel automated test. It is aimed at engineers and technical buyers who need to match an instrument’s capabilities (resolution, noise, sourcing, channel count and automation) to an application. Below I describe the main families in the range, point out the technical differences that matter in practice, and give decision guidance that maps common measurement requirements to representative Keithley models.
- Highest DMM resolution
- 8.5 digits — Keithley 2002
- Low-noise lab DMM
- 100 nV noise floor — Keithley 2010
- High-power SMU
- 100 W, 3 A output — Keithley 2425
- Nanovoltmeter sensitivity
- 1 nV best resolution — Keithley 2182A
- Electrometer input bias
- <3 fA input bias — Keithley 6517B
All models
| Model | Type | Display | Operating Temperature | Dimensions (W×H×D) |
|---|---|---|---|---|
| 2015 | Multimeters | Vacuum Fluorescent Display (VFD) | 0 to 50 | 213 x 89 x 370 mm |
| 2000 | Multimeters | Vacuum Fluorescent Display (VFD) | 0 to 50 | 213 x 89 x 370 mm |
| 2001 | Multimeters | Multi-line Vacuum Fluorescent Display (VFD) | 0 to +50 | 214 × 90 × 369 |
| 2750 | Multimeters | Vacuum Fluorescent Display (VFD) | 0°C to 50°C | 485 × 89 × 370 |
| 3706 | Multimeters | Graphic vacuum fluorescent display (VFD), monochrome | — | — |
| 2002 | Multimeters | — | 0°C to 50°C | — |
| 6485 | Picoammeters | 5½-digit vacuum fluorescent display (VFD) | 0 °C to 50 °C | — |
| 6487 | Picoammeters | 5.5-digit Vacuum Fluorescent Display (VFD) | 0 to 50 | 89 × 213 × 370 |
| 2182A | Voltmeters,misc | 2-line Vacuum Fluorescent Display (VFD) | 0°C to 50°C | 213 mm × 89 mm × 370 mm |
| 2601B | *misc | Dual-line Vacuum Fluorescent Display (VFD) | 0 °C to 50 °C | 213 mm × 89 mm × 460 mm |
| 2010 | Multimeters | 12-character vacuum fluorescent display (VFD) | 0°C to 50°C | 213 mm × 89 mm × 370 mm |
| 2100 | Multimeters | 5×7 dot matrix vacuum fluorescent display (VFD) | 0°C to 50°C | 252 mm × 104 mm × 371 mm (with bumper and handle) |
| 2700 | Multimeters | 12-character alphanumeric VFD with 7-character secondary display | 0 °C to 50 °C | 213 mm × 89 mm × 370 mm |
| 3706A | Multimeters | 2-line Vacuum Fluorescent Display (VFD) | 0 °C to 50 °C | 483 mm × 89 mm × 457 mm |
| 617 | Electrometers | 4½-digit LED with 2-digit exponent | 0°C to 50°C | 216 mm × 127 mm × 359 mm |
| 619 | Electrometers | 5½-digit LED display with exponent and function indicators | 0°C to 50°C | 127 mm H × 216 mm W × 359 mm D (5.0 in × 8.5 in × 14.1 in) |
| 6514 | Electrometers | 5½-digit Vacuum Fluorescent Display (VFD) | 0°C to 50°C | 214 mm × 90 mm × 369 mm |
| DMM7510 | Ammeters | 5-inch color TFT touchscreen with WVGA (800 × 480) resolution | 0 °C to 50 °C | 224 mm × 106 mm × 410 mm (with bumpers and handle) / 213 mm × 88 mm × 360 mm (without bumpers and handle) |
| 2425 | *misc | 12-character alphanumeric vacuum fluorescent (VFD), 2 lines | 0°C to 50°C | 213 mm × 89 mm × 370 mm |
| 2420 | Multimeters | Double-line Vacuum Fluorescent Display (VFD) | 0 °C to 50 °C | 213 mm × 89 mm × 370 mm |
| 2510-AT | Light | 12-character vacuum fluorescent display (VFD) with status indicators | 0°C to 50°C | 213 mm × 89 mm × 370 mm |
| 2604B | *misc | Dual-line vacuum fluorescent display (VFD) | 0 °C to 50 °C | 213 mm × 89 mm × 435 mm |
| 2611B | *misc | Dual-line Vacuum Fluorescent Display (VFD) | 0 °C to 50 °C | 213 mm × 89 mm × 460 mm |
| 6517B | Megohmmeters | 5.5-digit Vacuum Fluorescent Display (VFD) | 0°C to 50°C | 214 mm × 90 mm × 369 mm |
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How Keithley’s meter range is structured
Keithley groups meters by measurement role rather than by a single product family. Core bench DMMs focus on wide function sets and lab accuracy (examples: Model 2000, Model 2001 and Model 2002). A separate line of high-performance lab DMMs and graphical samplers (example: DMM7510) blends high-resolution DC measurements with digitizing capability. Source-measure units (SMUs) appear across two form factors: compact bench SMUs for device I–V work and dual- or multi-channel SMUs for production throughput (examples: 2601B family and 2604B). High-power single-channel SMUs are available for more demanding sourcing needs (examples: Model 2425 and Model 2420). For very low-current or high-resistance work Keithley supplies picoammeters and electrometers (examples: 6485, 6487, 6514, 6517B, 619 and 617). Multi-channel measurement and switching are handled by the Integra and Series 3700 platforms (examples: 2700, 2750, 3706, 3706A). There are also specialty meters for tasks such as audio-band THD (Model 2015) and two-channel nanovoltage measurement (Model 2182A).
What distinguishes instruments within the range
Resolution and converter architecture separate the high-end lab DMMs from general-purpose models: some instruments use high-bit A/D stages and selectable front/rear inputs for metrology work. SMUs combine precise sourcing and measurement; models differ by power, voltage range and transient/pulse capability. Electrometers and picoammeters are differentiated by input bias/current resolution, internal voltage sourcing for insulation or leakage tests, and burden voltage. System instruments (Integra, Series 3700) add multiplexer capacity and slot-based expansion for many channels, plus onboard scripting and trigger links for automated flows. The DMM7510 pairs a high-accuracy DMM with an 18-bit sampling digitizer and a color touchscreen for waveform and transient analysis; that makes it useful where you need both precision DC readings and time-domain capture in one unit.
Choosing by measurement need
Match device to the measurement function and the dominant challenge:
- If you need very high DC resolution or metrology-grade readings, select a high-resolution lab DMM (look for architectures and input options appropriate for low-noise DC work).
- If you must source and measure with tight coupling (sweep, I–V, pulsed tests), choose an SMU. The 2601B family offers compact single-channel SMU capability; multi-channel SMUs such as the 2604B bring throughput advantages. High-voltage or higher-power sourcing calls for single-channel power SMUs like the 2420/2425 series.
- For picoamp and sub-picoamp current work or extreme high-resistance characterization, use picoammeters/electrometers; some models include built-in voltage sourcing to perform ratiometric or alternating-voltage resistance tests.
- For multi-point data acquisition and switching, use Integra-series multimeters (2700/2750) or a Series 3700 mainframe (3706/3706A) with plug-in cards — these scale channel count and add signal conditioning and timestamping for long-term or automated measurement.
System integration and automation
Keithley offers instruments intended for automated racks and production lines as well as bench use. Integra modules and Series 3700 mainframes accept plug-in cards and provide trigger-link lines, programmable I/O and scripting capability for local test execution. Select a mainframe when you need many multiplexed channels, or when you require high-quality switching with an instrument-grade internal DMM. For mixed tasks (precision DC plus fast transient capture) consider the graphical sampling DMM to reduce system complexity. When choosing, evaluate the available interfaces and scripting/driver support (SCPI, TSP, LAN/LXI where provided) to match your automation stack.
Popular models
Frequently asked questions
- Which Keithley instrument should I use for nanovolt-level, low-resistance measurements?
- Choose the two-channel nanovoltmeter when you need coordinated low-noise voltage measurement with current sourcing. The 2182A supports delta-mode coordination with compatible Keithley current sources for low-resistance characterization and is optimized for stable, low-noise voltage readings.
- Do any of these meters also source voltage or current?
- Yes. SMUs (for example, the 2601B family, 2604B and the high-power 2425/2420 models) integrate precision sourcing and measurement in one instrument. Some picoammeter/electrometer models (for example, the 6487 and the 6517B series) include built-in voltage sources to support high-resistance or leakage tests.
- When should I choose an electrometer over a picoammeter?
- Pick an electrometer when your work requires very high input impedance, the lowest possible bias currents and wide resistance/charge ranges. Electrometers provide instrument-level features for charge and high-resistance measurement. Picoammeters are useful when the primary need is fast, sensitive current measurement with fewer electrometer-style functions.
- Which instruments scale best for multi‑channel automated testing?
- For multi-channel automated work use Integra-series instruments (such as the 2700 and 2750) or a Series 3700 mainframe (3706 or 3706A) with switch cards. These platforms accept expansion cards or multiplexers, timestamp readings, and provide trigger-link and programmable I/O for integration into automated test systems.