Fluke 177 vs 179 Multimeters – What’s the Difference?

The Fluke 177 and Fluke 179 are two popular digital multimeters in the Fluke 170 series. Known for their reliability, ruggedness, and precision, these models are favored by professional technicians for troubleshooting and maintenance tasks.

Fluke 179/EDA2 6-Piece Industrial Electronics Multimeter Combo Kit

Quick Summary

While both models offer True RMS accuracy, a 1000V measurement range, and robust durability, the Fluke 179 includes a built-in thermometer for temperature measurements (-40°C to 400°C) and comes with a temperature probe. This makes the 179 more versatile, particularly for HVAC technicians or applications requiring temperature monitoring.

The Fluke 177, on the other hand, is perfect for general electrical troubleshooting, offering the same accuracy and ruggedness at a slightly lower cost, ideal if temperature measurement isn’t needed.

Comparison Table: Fluke 177 vs. Fluke 179

FeatureFluke 177Fluke 179
True RMSYesYes
Accuracy (DC Voltage)±0.09%±0.09%
Voltage Measurement RangeUp to 1000V (AC/DC)Up to 1000V (AC/DC)
Current Measurement RangeUp to 10AUp to 10A
Resistance RangeUp to 50 MΩUp to 50 MΩ
Capacitance MeasurementUp to 10,000 µFUp to 10,000 µF
Frequency RangeUp to 100 kHzUp to 100 kHz
Temperature MeasurementNoYes (Built-in thermometer, -40°C to 400°C)
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Display BacklightYesYes
Analog Bar GraphYesYes
Hold Functions (Display/Auto)YesYes
Min/Max RecordingYesYes
Operating Temperature-10°C to +50°C-10°C to +50°C
Safety RatingCAT III 1000V, CAT IV 600VCAT III 1000V, CAT IV 600V
Included AccessoriesTest leads, 9V battery, user manualTest leads, 9V battery, user manual, temperature probe
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PricingCheck PriceCheck Price

Pros and Cons of Fluke 177

Pros:

  1. Excellent accuracy for most electrical troubleshooting tasks.
  2. True RMS capability for accurate readings on non-linear loads.
  3. Durable design with a limited lifetime warranty.
  4. Lightweight and ergonomic for daily use.

Fluke 177 True-RMS Digital Multimeter

Cons:

  1. Lacks built-in temperature measurement, which may be critical for some applications.
  2. Similar price range to the 179, but with fewer features.

Pros and Cons of Fluke 179

Pros:

  1. All the features of the 177, plus a built-in thermometer for temperature measurement.
  2. Broad utility for both electrical and HVAC applications.
  3. High precision and reliability for demanding tasks.
  4. Comes with a temperature probe, eliminating the need for an extra instrument.

Fluke 179 Multimeter with Backlight, Includes Built-In Thermometer to Measure Temperature, Measures True-RMS AC Current and Voltage, Frequency, Capacitance, Resistance, Continuity and Diode

Cons:

  1. Slightly higher price compared to the 177, which may not be justified if temperature measurement isn’t needed.
  2. Overkill for users focused solely on basic electrical measurements.

Which Should You Choose?

  • Fluke 177: Ideal for professionals who need a reliable, accurate multimeter for general electrical troubleshooting and repairs but do not require temperature measurement.
  • Fluke 179: Perfect for users who need a versatile tool that can also measure temperature, such as HVAC technicians or electricians working in environments where temperature monitoring is crucial.

In conclusion, both the Fluke 177 and Fluke 179 offer exceptional performance, durability, and precision.

Fluke 179 Multimeter with Backlight, Includes Built-In Thermometer to Measure Temperature, Measures True-RMS AC Current and Voltage, Frequency, Capacitance, Resistance, Continuity and Diode