Digital Multimeter
Find the ideal benchtop digital multimeter (DMM) for your testing needs.
Keithley provides one of the most comprehensive ranges of benchtop and system digital multimeters designed for every level of measurement—whether for education, R&D, or production testing. From entry-level models for student labs to high-speed, high-accuracy DMMs for component, module, and product manufacturing, Keithley delivers trusted precision across all applications.
Which digital multimeter is right for you?
Precision Series
Keithley’s Precision Series represents the pinnacle of performance in digital multimeters. Featuring an intuitive touchscreen interface, these instruments simplify workflows from data capture through to analysis. Models like the DMM7510 combine industry-leading 7.5-digit accuracy with exceptional speed, making them ideal for demanding scientific, engineering, and industrial applications where accuracy and efficiency are critical.
Keithley DMM6500 6.5 Digit Multimeter with Graphical Touchscreen
- 0.0025% DCV accuracy (1 year)
- 1 Msample/s digitizing, 16-bits
- 10-channel scan card option
- 0.0014% DCV accuracy (one year)
- 1,000,000 readings/s digitizer
- Touchscreen display
- 2 DMMs in 1U high enclosure
- 1 Msample/s, 18-bit digitizers
- 10 nV, 0.1 µΩ and 1 pA sensitivities
Specialty Series
The Specialty Series digital multimeters deliver unmatched performance and measurement optimization for demanding applications. Designed for high-accuracy testing, these DMMs support advanced capabilities such as AC voltage with extended bandwidth and measurements up to 8.5 digits. Ideal for scientific research, precision manufacturing, and complex electronic testing, they provide specialized functionality for the most detailed and exacting measurements.
Keithley 2002 8.5 Digit Multimeter with Scanning
- 0.0006% DCV accuracy (one year)
- 1nV, 100nΩ, and 10pA sensitivity
- DC in-circuit current and 15MHz frequency measurement
Instrumentation Series
The Instrumentation Series of digital multimeters focuses on providing the fundamentals of test and measurement with trustworthy results. These multimeters are reliable and easy to use, making them perfect for standard day-to-day measurement tasks. They offer a solid balance between performance and affordability, suitable for educational purposes, general electronic troubleshooting, and basic industrial applications. Also consider Keithley Source Measure Units (SMUs), which combine the capabilities of a DMM, power supply, current source, and electronic load—offering an all-in-one test solution for complex setups.
Keithley 2010 Series: 7.5 Digit Digital Multimeter with Scanning
- 100nV noise floor
- Dry circuit measurement
- 10Ω resistance range
- 11 functions, 8 math operations
- USB interface
- Front and rear inputs
- Temperature and Capacitance
- 10A DC and AC current ranges
- USB
Benefits of Keithley Digital Multimeters
Keithley DMMs are built for precision, speed, and versatility. Key benefits include:
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Resolutions from 5½-digit to 8½-digit
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6 ppm basic DC voltage accuracy on 8½-digit models for calibration labs
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1 Msample/s sampling rate for capturing transient or low-level signals from IoT and wireless devices
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1 µΩ and 1 pA sensitivity for ultra-low-power device testing
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Wide measurement functions: DC/AC voltage, current, 2- and 4-wire resistance, continuity, frequency, temperature (RTD, thermistor, thermocouple), diode test, and capacitance
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Multiple interface options: LAN/LXI, USB-TMC, GPIB, RS-232
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Built-in intelligence for automated tests and custom measurements with minimal PC interaction
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Expandable measurement capabilities up to 10 channels
Understanding Digital Multimeters
A digital multimeter (DMM) is a core instrument in electronics, measuring voltage, current, and resistance with precision. It replaces separate meters (voltmeter, ammeter, ohmmeter) with one integrated device—essential for engineers, technicians, and educators alike.
Common Applications:
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Troubleshooting: Locate faults in circuits and components
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Component Testing: Verify that parts meet design specifications
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Circuit Verification: Confirm correct operation and voltage levels
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Battery Testing: Assess battery output and performance
How to Choose the Right DMM
When selecting a digital multimeter, consider:
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Accuracy: Critical for research and production environments
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Measurement Range: Ensure the DMM covers expected signal levels
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Features: Look for functions like data logging, True RMS, and relative mode
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Safety Ratings: Choose a DMM certified for your application’s voltage and environment
For detailed specifications, refer to our Keithley Digital Multimeter Selector Guide.
Resources
Learn Source Measure Units(SMU) basics – from fundamental measurement concepts to key industry applications, such as how to use an SMU in a 2 terminal and 3 terminal device obtaining IV curves and how an SMU can simplify the test setup and increase productivity.
Digital Multimeters Comparison Table
DMM 101: Handheld vs. bench digital multimeters
Tektronix Keithley offers a variety of handheld and bench digital multimeters that vary greatly in resolution, sensitivity, accuracy, etc. Users can choose the most appropriate type according to different application situations.
Digital Multimeter FAQs
Browse the FAQs
How do digital multimeters work?
DMMs use probes or leads to connect to a device or circuit, converting analog electrical signals into digital values displayed on screen via an analog-to-digital converter.
How do you use a benchtop DMM?
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Power on the multimeter.
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Select your measurement type (V, A, or Ω).
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Choose an appropriate range.
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Connect black lead to COM and red lead to the correct terminal.
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Touch probe tips to the measurement points.
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Read and interpret the displayed value.
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Disconnect leads after testing.
What’s the difference between handheld and benchtop DMMs?
Handheld DMMs (e.g., from Fluke) are used in the field for service and maintenance. Benchtop DMMs (e.g., from Keithley) offer greater precision, programmability, and integration options for lab and production use.
Can Keithley DMMs be rack-mounted?
Yes, with the appropriate mounting kits.
What safety precautions should you follow?
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Read the manual before use
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Select correct voltage/current ranges
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Avoid touching exposed conductors
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Work in well-lit areas and wear PPE
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Do not use damaged instruments
