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Clamps

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  • Comparing clamp meters to digital multimeters

    Comparing clamp meters to digital 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.
  • Quality clamp meters will stand up to demanding use

    Why ruggedness matters in a clamp meter

    Fluke engineers its clamp meters to withstand a high degree of unconventional use—as a wedge, makeshift pliers, nutcracker, whatever a tech might dream up in a moment of need.
  • Basic features of a clamp meter

    What is a clamp meter?

    Clamps measure current. Probes measure voltage. Having a hinged jaw integrated into an electrical meter allows technicians to clamp the jaws around a wire, cable and other conductor at any point in an electrical system, then measure current in that circuit without disconnecting/deenergizing it.
  • Tips for choosing a clamp meter

    Types of clamp meters

    Types of clamp meters
  • Safety is always a priority when working with electricity in industrial sites

    Clamp meter safety tips

    Safety is always a priority when working with electricity in industrial sites.
  • Left: Jaws of ac-only current transformer clamp meters close tightly. Right: A sensor sits in the air gap between the jaws of Hall Effect clamp meters.

    What are Hall Effect (ac, dc) clamp meters?

    Hall Effect clamp meters can measure both ac and dc current up to the kilohertz (1000 Hz) range
  • Tips for choosing a clamp meter

    Tips for choosing a clamp meter

    Fluke’s assortment of clamp meters has been engineered to address a wide variety of needs, from routine tasks to specialty projects.
  • An interior view of a Fluke 325 clamp meter

    Inside current transformer (ac) clamp meters

    An interior view of a Fluke 325 clamp meter
  • An enlarged interior view of a Rogowski coil—a Fluke iFlex® probe

    Inside flexible coil clamp meters

    Clamp meters with flexible coil probes can fit into tight spaces
  • How to measure signals using test probes

    How to measure signals using test probes

    Fluke’s assortment of clamp meters has been engineered to address a wide variety of needs, from routine tasks to specialty projects.
  • Measuring ac current with a clamp meter’s jaws

    How to measure current with a clamp meter

    Measuring ac current with a clamp meter’s jaws. Note: Current flowing in opposite directions cancels each other. If current is moving in opposite directions, place just one conductor within the clamp during measurement.
  • How and why to measure inrush current

    How and why to measure inrush current

    Knowing the value of inrush current helps technicians locate startup problems
  • ARTICLE: How a solar rooftop contractor ensures quality panel installations every time -1

    How a solar rooftop contractor ensures quality panel installations every time

    Using Fluke’s 376 True RMS Clamp Meter, a rooftop solar contractor saves time and ensures quality panel installation by testing throughout the installation process.
  • Leading facility solutions firm upgrades popular instrument with Fluke Connect model

    Leading facility solutions firm upgrades popular instrument with Fluke Connect model

    MacDonald-Miller standardized on the Fluke 902 Clamp Meter when it came out several years ago.

  • Breaking new ground without breaking the loop

    Breaking new ground without breaking the loop

    Early reports from the field suggest that the new Fluke 772 and 773 Milliamp Process Clamp Meters may be game changers, breaking new ground for technicians in the HVAC controls industry. With the feature sets these meters offer, troubleshooting of the most common problems in modern control systems becomes a snap.

  • Leakage current measurement basics

    Leakage current measurement basics

    On circuits protected by GFCIs (Ground Fault Current Interrupters), leakage current can cause unnecessary and intermittent tripping. In extreme cases, it can cause a rise in voltage on accessible conductive parts.

  • Case study: Electric utility plays it safe...

    Case study: Electric utility plays it safe...

    The safety rated Fluke T+Pro gets field-tested by non-electricians. Larger buttons for gloved hands and a battery life indicator helped to make the transition from the old solenoid-based testers to the T+Pro much easier.

  • Using accessory current clamps with Fluke Digital Multimeters

    Using accessory current clamps with Fluke Digital Multimeters

    Accessory current clamps expand a multimeter's flexibility and measurement capabilities by allowing it to measure up to thousands of amps.