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Digital multimeter troubleshooting and best practices

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Digital multimeters

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    Understanding measurements you can make with your digital multimeter and clamp

All digital multimeter articles

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The history of the multimeter

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Fluke 87V Digital Multimeter vs Fluke 87V MAX Multimeter

Compare IP rating, battery life and other features. What is the difference between the Fluke 87V MAX and the 87V digital multimeter?

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MythBusters’ Adam Savage’s favorite tools

Fluke multimeters tested by Adam Savage. Trusted tool recommendation for budget multimeter review.

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How to Measure Duty Cycle with a Digital Multimeter

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Clamp Meters vs Multimeters

A digital multimeter is essentially a voltage-measuring tool with some current abilities. A clamp meter is basically a current-measuring tool with some voltage abilities. They are distinctly different instruments, each with its own advantages.

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How to troubleshoot and validate repair of a pump control panel

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How to Verify Electrical Test Tool Operation with a Proving Unit

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What is a thermal multimeter?

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The dials, buttons, symbols, and display of a digital multimeter

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How to Test for Continuity with a Digital Multimeter

Learn how to test continuity using a digital multimeter.

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How to measure capacitance

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How to measure frequency

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How to measure ac voltage

Steps for measuring ac voltage with a digital multimeter.

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How to Test Diodes with a Digital Multimeter

Steps for using a multimeter in the Diode Test mode.

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How to Measure Resistance with a Digital Multimeter

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How to measure dc voltage with a digital multimeter

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How to measure current with a clamp accessory

How to measure current with a digital multimeter plus clamp accessory.

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Why digital multimeter accuracy and precision matter

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Multimeter glossary

Common Terminology and Abbreviations for DMM Products

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How a few good test tools saved motor replacements at a pulp and paper company

Few things are as disposable as paper towels. But the next time you nonchalantly toss away (or compost) a paper towel, keep in mind that there's a lot more to it than meets the eye.

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Measuring a rectifier with no load

The 189 was the first Fluke handheld DMM that offered two ways to measure AC volts. In the Vac function, the measurement was essentially the same as most Fluke DMMs, but the 189 also allows you to measure ac volts while in the Vdc function.

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Industry first combines thermal imager with digital multimeter

The latest technology available combines a digital multimeter with a thermal imager and adds wireless capabilities so measurements can be taken from a safe distance, saved and even stored in secure data centers for later analysis.

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Solid ground: Increasing parallel conductor ampacity

The most popular reason for paralleling conductors is to provide higher ampacity than a single conductor can provide. "In a typical building design, the largest conductors are usually 500 kcmil or 600 kcmil". "And many electrical contractors will actually object to 600 kcmil. If ampacity above 400 A is necessary, using parallel conductors is the only reasonable solution.

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Back to basics: Pre-emptive troubleshooting and testing of class 2 and 3 alarm circuits

HSI Security Systems installs, maintains and monitors electronic life-safety systems throughout Northwest Oregon and Southwest Washington. We're an electrical contractor that specializes in low voltage systems and rudimentary electrical controls.

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Testing your test leads

Checking your test leads to make sure they are in good condition and rated for the job at hand is the best insurance for accuracy and safety

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Tough Fluke tools

Read harrowing true stories about extreme testing experiences with Fluke tools.

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Under-utilized functions: How to use fast/peak min/max on your DMM

Understand how to use under-utilized functions on your DMM such as Fast/Peak and Min/Max.

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Wind park engineer goes sky high to troubleshoot

A Canadian engineer keeps wind farm in New Brunswick up and running by using a Fluke multimeter.

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Fixing food processing problems with onsite, onscreen DMM trending

Making sure that equipment delivers peak performance at all times requires ongoing troubleshooting on the part of maintenance technicians. Depending on the size and scope of the facility, operations will change over and produce many different products and packages in varying size runs.

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Fluke 289/FVF helps to develop high-voltage sources

Founded in 1997, LIFETECH S.R.O. develops, designs and distributes equipment for water and air treatment and purification. The company also services its equipment, as well as equipment made by other manufacturers. Lifetech has about twenty employees overall, with five in the Development Department.

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How robust is your handheld meter?

In the world of handheld digital multimeters, maintenance professionals are being deluged with new models, new manufacturers, new functionality, claims about ruggedness, claims about water- and dust-resistance - the list goes on and on.

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Troubleshooting robotic equipment

Troubleshooting robotic equipment with the Fluke 175 True RMS Digital Multimeter at Briggs & Stratton plant; manufactures small engines for generators, pumps, pressure washers

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VFD troubleshooting at a water-quality plant

A Florida county water utilities department uses Fluke tools to measure VFD output filtering, Min/Max frequency, phase-to-phase voltage imbalances and motor insultation resistance checks.

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Choosing the correct fuse for your tester

Find out what the hidden dangers of making voltage and current measurements with a tester that does not have the fuse protection that was designed into the tester - dangers than can cause serious burns, and possibly even death.

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Dual impedance digital multimeters

Find out what dual impedance and voltage detection are and why it's good to have them built into your multimeter. Find out about impedance basics, ghost voltages, non-contact voltage detection and the absence or presence of voltage testing.

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Event recording (or logging) with a Fluke 287/289 digital multimeter

The application note explains what kind of logging these meters can perform, how to use the recording feature, and the information that can be provided to you. This note also discusses how FlukeView Forms PC software is used to increase the power of the Recording feature.

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Everyday troubleshooting with the Fluke 116 DMM

Read success stories from ONSITE PC Assitance owner Robert Johns. Working on mostly low voltage equipment for home offices and small-to-medium business, Johns uses the Fluke 116 to measure for low voltage, auto-ranging and min/max temperature.

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Facts about true-rms measurement

Expert Chuck Newcombe compares digital multimeters of yesterday with today's DMMs with true-rms ac measurement capability. Get the facts about the subtle points you should know when making rms measurements.

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Fluke DMMs in Antarctica

Astronomers from the University of New South Wales (UNSW) in Australia have been working in Antarctica's interior since 1996. In collaboration with astronomers from France, Italy and the United States, they're seeking the perfect location for the next generation of deep-space telescopes.