Does the Fluke 179 measure temperature?

Yes. The Fluke 179 includes built-in temperature measurement and ships with a K-type thermocouple, covering approximately −40 °C to +400 °C.

Which model is best for low-light environments?

Both the Fluke 177 and Fluke 179 have a backlit display, making them better for dark or low-light workspaces than the Fluke 175.

Do all three models have the same safety ratings?

Yes. All three have CAT III 1000 V and CAT IV 600 V safety ratings.

Which model is the most budget-friendly?

The Fluke 175 is the most affordable option while still providing True RMS, 6000 counts, and robust build quality.

Who should choose the Fluke 179?

HVAC/R technicians, process engineers, and users who need both electrical measurements and temperature capability in one tool will benefit most from the Fluke 179.

Are there differences in size or weight among the 175, 177, and 179?

No. All three models are similar in size and weight (about 43 × 90 × 185 mm and approximately 420 g).

How long is the battery life for these multimeters?

Around 200 hours with alkaline batteries (without using the backlight).

April 9, 2026 On September 14, 2025

fluke 175 vs 177 vs 179 digital multimeters

Posted by بهروز شایسته پور

Fluke 175 Vs 177 Vs 179 Digital Multimeter Comparsion

Show column

When comparing Fluke’s 175, 177, and 179 digital multimeters, you’re not just choosing a tool—you’re choosing how efficiently, safely, and accurately you’ll work. These three models may look similar at a glance, but each one brings distinct strengths that cater to specific electrical, industrial, or HVAC needs. In this article, we’ll break down the exact differences, highlight each model’s standout features, and help you decide which one truly fits your work style and environment.

Quick Comparison Table: Fluke 179 vs 175 vs 177

Feature	Fluke 175	Fluke 177	Fluke 179
True RMS	✔️	✔️	✔️
Backlit Display	—	✔️	✔️
Temperature Measurement	—	—	✔️ (–40 °C to +400 °C, thermocouple included)
Basic DC Voltage Accuracy	±0.15% + 2	±0.09% + 2	±0.09% + 2
Basic AC Voltage Accuracy	±1.0% + 3	±1.0% + 3	±1.0% + 3
Count / Resolution	6000	6000	6000
Max Voltage (V)	1000 V AC/DC	Same	Same
Max Current (A)	10 A AC/DC	Same	Same
Resistance	0.1 Ω–50 MΩ	Same	Same
Capacitance	1 nF–10,000 µF	Same	Same
Frequency	2 Hz–100 kHz (V); ≤30 kHz (A)	Same	Same
Safety Ratings	CAT III 1000 V / CAT IV 600 V	Same	Same
Battery Life	~200 h (alkaline, no backlight)	~200 h	~200 h
Dimensions	43 × 90 × 185 mm	Same	Same
Weight	~420 g	~420 g	~420 g
datasheet	Fluke 175 datasheet	Fluke 177 datasheet	Fluke 179 datasheet

Fluke 175 True-RMS Digital Multimeter: Simplicity, Durability & Affordability

The Fluke 175 is the entry point into the 170 series and offers serious reliability without extra bells and whistles. It includes True RMS for accurate readings, particularly on non-linear loads, and is housed in a rugged design with high safety ratings. This model is perfect for electricians and technicians who prioritize essential features at an affordable price point.

Strengths:

Accurate basic electrical measurements
Extremely durable, shock-resistant housing
Affordable without sacrificing performance

Who It’s For:

Students in technical schools
General electricians
Commercial facility technicians

Limitations:

No display backlight
No temperature measurement support

Fluke 177 True-RMS Digital Multimeter with display backlight: Enhanced Accuracy and Visual Comfort

The Fluke 177 builds on the 175 by adding a backlit display—a must-have in low-light or field environments—and increased voltage measurement accuracy. It’s a favorite among professionals who need precise readings and excellent visibility during inspections and diagnostics.

Advantages:

High DC accuracy of ±0.09% + 2
Bright backlit display for dark workspaces
Maintains rugged safety and durability of the 175

Best Used For:

Industrial automation
Electrical maintenance in dim areas
Field diagnostics

Trade-offs:

Still lacks temperature capabilities

Fluke 179 TRMS Digital Multimeter : Fully Loaded for Advanced Technicians

The Fluke 179 is the premium model of the trio, offering everything the 177 does, plus the ability to measure temperature with the included thermocouple. This makes it ideal for HVAC professionals, engineers, and technicians handling both electrical and thermal diagnostics.

Why It’s the Flagship:

Built-in temperature measurement (K-type thermocouple included)
Combines all features of the 175 and 177
Advanced diagnostics in a single tool

Perfect For:

HVAC/R professionals
Process automation engineers
R&D labs

Minor Drawbacks:

Higher price point (but well worth the functionality)

The Differences: Fluke 179 vs 175

The key difference between the Fluke 179 and Fluke 175 lies in advanced functionality. While both offer True RMS, robust build quality, and high safety ratings (CAT III 1000V / CAT IV 600V), the Fluke 179 includes a built-in temperature measurement feature with a K-type thermocouple, making it ideal for HVAC and multi-discipline tasks. Additionally, the 179 features a backlit display, offering better visibility in dim environments, while the 175 lacks both of these. If you need temperature diagnostics and better screen readability, the Fluke 179 is the superior choice.

The Differences: Fluke 179 vs 177

The main difference between the Fluke 179 and Fluke 177 is the addition of temperature measurement in the 179 model. Both multimeters share identical core specifications: True RMS, 6000-count resolution, backlit displays, and high accuracy (±0.09% for DC voltage). However, the Fluke 179 includes a built-in thermometer with a K-type thermocouple, enabling users to measure temperatures from –40 °C to +400 °C—an essential feature for HVAC technicians and industrial maintenance engineers. If you don’t need temperature functionality, the Fluke 177 offers the same precision and display quality at a slightly lower cost.

The Differences: Fluke 175 vs 177

The main difference between the Fluke 175 and Fluke 177 is the improved accuracy and the presence of a backlit display in the 177. Both models feature True RMS, CAT III 1000V / CAT IV 600V safety ratings, and a rugged design, but the Fluke 177 offers better DC voltage accuracy (±0.09% vs. ±0.15% in the 175) and includes a backlight, making it easier to read in low-light conditions. If your work involves precision and visibility in darker environments, the Fluke 177 is the smarter choice.

Conclusion: Which Fluke is Right for You?

If you only need essential features on a limited budget, the Fluke 175 is a sensible choice. If you often work in dark environments or require greater measurement accuracy, the Fluke 177 is a smart upgrade. However, if you’re looking for the most complete performance in this series and need temperature measurement as well, the Fluke 179 is the best and most professional option.