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Fluke 177 True RMS Multimeter

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  • Measures AC/DC voltage to 1000V and AC/DC current to 10A with True RMS
  • Continuity and diode testing; resistance, frequency and capacitance measurement
  • AutoHOLD freezes stable readings and smoothing mode negates input fluctuations
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(Ex. VAT) £265.00 (Inc. VAT) £318.00

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"A versatile multimeter with autoHOLD and smoothing mode for unstable readings"

  • Description

    Fluke 177 True RMS Multimeter

    The Fluke 177 True RMS Multimeter stands out because of its large AC/DC voltage (0 to 1000V) and frequency (0 to 100kHz) ranges and its capacity to measure in both milliamps and millivolts. The instrument also takes readings for resistance (up to 50MΩ), AC/DC current (up to 10A) and capacitance (up to 10,000µF) in addition to carrying out continuity and diode tests (feedback via audible buzzer). The True RMS measurement for AC readings helps contribute to excellent basic accuracy of ±0.9% whilst smoothing mode helps produce coherent results from rapidly fluctuating input values.

    Automatic ranging selects the best range and resolution for a given parameter, thus saving time, although the user can manually select the range when required. Readings are shown on the backlit digital screen and there are options for min/max/avg data recording (with min/max alert) and a real-time bar-graph display of readings. Results can be manually held on screen via the data hold button but AutoHOLD is also available which keeps a stable reading on screen until a new stable reading is detected. The speedy response times mean that results come through extremely fast.

    Several features make the Fluke 177 a safe instrument to use. Dangerous voltage levels are indicated by an on-screen lightning symbol and the ‘LEAd’ message on screen reminds the user to check the test lead connections when the operating dial is switched to a different parameter. These features are backed up by an over voltage safety rating of Cat IV up to 600V and Cat III up to 1000V.

    The Fluke 177 is lightweight and ergonomic and operates via a simple dial and push button interface. Grooves in the back of the instrument allow easy lead storage and the product comes supplied with a 9V battery and test leads.

    Fluke part number: 177

    Key Features

    • AC/DC voltage range: 0 to 1000V
    • AC/DC current range: 0 to 10A
    • Resistance range: 50MΩ
    • Capacitance range: 0 to 10,000µF
    • Frequency range: 0 to 100kHz
    • Values given in mV and mA
    • True RMS measurement for AC values
    • Automatic and manual ranging
    • Backlit digital screen with bar-graph display
    • Min/max/avg recording
    • 0.09% basic accuracy
    • Smoothing mode for fluctuating readings
    • Auto hold and data hold
    • Cat IV 600V, Cat III 1000V
  • Specification

    DC Voltage

    • Accuracy1: ±0.09% + 2
    • Max resolution: 0.1mV
    • Range: 0 to 1000V

    True RMS AC Voltage

    • Accuracy1: ±1.0% + 3
    • Max resolution: 0.1mV
    • Range: 0 to 1000V

    DC Current

    • Accuracy1: ±1.0% + 3
    • Max resolution: 0.01mA
    • Range: 0 to 10A

    True RMS AC Current

    • Accuracy1: ±1.5% + 3
    • Max resolution: 0.01mA
    • Range: 0 to 10A


    • Accuracy1: ±0.9% + 1
    • Max resolution: 0.1Ω
    • Range: 0 to 50MΩ


    • Accuracy1: ±1.2% + 2
    • Max resolution: 1nF
    • Range: 0 to 10,000µF


    • Accuracy1: ±0.1% + 1
    • Max resolution: 0.01Hz
    • Range: 0 to 100kHz

    1Accuracies are best accuracies for each function.


    • Operating temperature: -10˚C to +50˚C
    • Storage temperature: -30˚C to +60˚C
    • Humidity (without condensation): 0-90% (0˚C to 35˚C), 0-70% (35˚C to 50˚C)
    • Overvoltage category: EN61010-1 1000V Cat III, 600V Cat IV
    • Agency approvals: UL, CSA, TÜV listed and VDE Pending
    • Dimensions: 43 x 90 x 185mm
    • Weight: 420g
    • Battery life: circa 200 hours without backlight
  • Supplied Accessories

    • Fluke 177 True RMS Multimeter
    • Instruction booklet for Fluke 177 True RMS Multimeter
    • Red/black test leads
    • 1 x 9V battery
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