10-fluke-117-vs-amprobe-am-570-when-the-5x-price-is-worth-it

If you’re debating between investing in a premium Fluke 117 digital multimeter or going for the significantly cheaper Amprobe AM-570, you’re likely asking yourself whether the fivefold price difference actually translates into meaningful advantages for your workbench or field tasks. This article breaks down what sets these two meters apart, helping you decide when that steep price premium is justified—and when it’s not.

What These Meters Are Designed For

Fluke 117: Professional Precision and Safety

The Fluke 117 is a compact, high-quality True RMS multimeter designed primarily for electricians and advanced technicians working in commercial or industrial environments. It emphasizes precision, safety, and convenience features tailored to challenging and intermittent electrical issues found in real-world installations.

Amprobe AM-570: Economical Versatility

The Amprobe AM-570 is a more budget-friendly True RMS meter offering a broad feature set aimed at electrical hobbyists, small maintenance teams, and educators. It covers most common electrical measurement needs with decent accuracy but without some of the professional conveniences or ruggedness.

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Key Differences and What They Mean for Your Work

The 5x cost difference isn’t just about brand prestige. Each meter’s build quality, measurement accuracy and range, ease of use, and safety specifications will impact how you work and the reliability of your results.

Feature	Fluke 117	Amprobe AM-570	Which to Choose?
Price	Approximately 5x higher	Affordable, entry to mid-range	Amprobe if budget critical; Fluke if long-term investment
Accuracy	True RMS with 0.5% DC voltage ±2 digits	True RMS 0.8% DC voltage ±3 digits	Fluke for precision electronic troubleshooting and calibration
Display	Large, bright LCD with backlight and analog bar	Basic LCD with backlight	Fluke for low-light and quick trend spotting
Input Protection	CAT III 600 V safety rating	CAT III 600 V, more limited overload protection	Fluke safer with better internal fusing and design
Auto Voltage Selection	Yes, auto ac/dc volts detection	Manual mode selection necessary	Fluke reduces errors for less experienced users
Low Input Impedance Mode	Yes, to detect ghost voltages	No	Fluke helpful for electricians diagnosing false voltage
Non-Contact Voltage Detector	Integrated	Separate tool often required	Fluke more convenient for quick checks
Data Hold, Min/Max Functions	Advanced data logging and hold options	Basic hold only	Fluke better for more complex troubleshooting
Battery Life	Moderate – needs brand-name rechargeable recommended	Longer on standard AA batteries	Amprobe cheaper upkeep, Fluke premium batteries
Size and Weight	Compact and lightweight	Slightly larger, heavier	Fluke better for field carry, Amprobe more slab-like

When the Fluke 117’s Premium Features Matter

1. Precision Electronic and Electrical Troubleshooting
   If your work demands tight measurement tolerances, such as verifying power supply voltages or diagnosing sensitive electronics, the Fluke’s better accuracy and True RMS performance reduce guesswork and re-testing.

2. Industrial and Commercial Electrical Systems
   The integrated low input impedance mode and automatic voltage sensing help prevent false positive readings (ghost voltages), a common issue in large wiring runs or complex panels. This saves both time and unsafe misdiagnosis.

3. Safety-Critical Environments
   Enhanced input protection and CAT III 600 V rating combined with robust build quality make the Fluke 117 a more reliable choice when working in environments where overloads or unexpected transient voltages could otherwise damage the instrument or risk operator injury.

4. Regular On-the-Job Use and Convenience
   Ergonomics count when you use your meter all day. The Fluke’s bright, easy-to-read screen, integrated non-contact voltage detector, and automatic AC/DC switching reduce steps, errors, and hand fatigue.

When the Amprobe AM-570 Is the Smarter Buy

1. Budget-Conscious Hobbyists and Makers
   If your projects don’t require industrial-grade precision and safety certification, the Amprobe provides all core functions—voltage, current, continuity, diode test, and resistance measurements—with reasonable accuracy at a fraction of the cost.

2. Occasional Use in a Low-Risk Environment
   For troubleshooting home wiring, do-it-yourself gear, or educational settings, the Amprobe covers the essentials well enough without breaking the bank. Its slightly larger and heavier form factor is less of a concern in bench or lab settings.

3. Better Battery Economy for Infrequent Use
   The use of standard AA batteries instead of specialized rechargeable packs means easier and cheaper battery replacement when the meter is used sporadically.

Common Pitfalls To Avoid Before Buying

• Assuming Price Equals Quality for All Needs
  More expensive doesn’t always mean better for your specific projects. Consider what measurements you will actually perform regularly before spending 5x more.

• Ignoring Safety Ratings for Work Conditions
  A low-cost meter might meet basic safety certifications but fail under real electrical surges or industrial noise. Always check input protection category ratings relative to your work environment.

• Overlooking Ergonomics and Display Quality
  A meter that’s hard to read or operate can increase errors. Factor in display size, backlighting, and dial/control ergonomics in your decision.

• Expecting Full Feature Parity
  Bonus functions like low input impedance and integrated voltage detection on the Fluke may matter day-to-day even if not obvious during casual use. Decide if the convenience and diagnostic clarity are worth extra cost.

Summary Comparison Table

Criteria	Fluke 117	Amprobe AM-570
True RMS Accuracy	±0.5% DC ±2 digits	±0.8% DC ±3 digits
Auto AC/DC Voltage Detect	Yes	No (manual)
Low Input Impedance Mode	Yes	No
Non-Contact Voltage Testing	Integrated	Usually external accessory
Safety Category Rating	CAT III 600 V	CAT III 600 V (basic protection)
Display Quality	Large backlit with analog bar	Standard backlit LCD
Data Logging	Basic min/max/delta storage	Hold function only
Battery Type	Brand-specific Li-Ion/rechargeable	AA alkaline
Portability	Compact, lightweight	Larger and heavier
Price	High (5x Amprobe)	Budget-friendly

When Is the Fluke 117 Worth the 5x Price?

• You work in professional electrical or electronics environments where safety, precision, and diagnostic reliability are non-negotiable.
• Your job demands fast, accurate troubleshooting with minimal setup time and risk of error.
• You need integrated convenience features that save time and clarify readings (e.g., ghost voltage detection, auto AC/DC selection).
• You’re investing for long-term durability and consistent performance across a range of tasks.

When to Stick with the Amprobe AM-570

• Your work is mainly hobbyist-level or light maintenance, without critical safety or precision requirements.
• The budget is tight and you don’t want to spend more than necessary on a reliable general-purpose multimeter.
• You prefer simplicity and don’t require advanced features or integrated extras.
• You don’t perform tasks where misreading voltages or transient spikes could result in damage or risk.

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Frequently Asked Questions

Q: Can the Amprobe AM-570 detect ghost voltages like the Fluke 117?
A: No, the AM-570 lacks a low input impedance mode to filter out ghost voltages. This feature is unique to higher-end meters like the Fluke 117 and important in complex or industrial wiring.

Q: Is there really a noticeable difference in accuracy between these meters?
A: Yes. The Fluke 117 offers tighter accuracy tolerances which can matter when troubleshooting sensitive electronics or verifying power supply standards. The Amprobe’s accuracy is sufficient for general use but less precise.

Q: Can I use third-party or generic batteries or cartridges in the Fluke 117?
A: The Fluke 117 typically uses brand-specific rechargeable batteries to ensure consistent voltage and reliability. Using third-party batteries may compromise performance or warranty, whereas the Amprobe uses standard AA cells for easy replacement.

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Choosing between these two meters boils down to matching your budget with your precision and safety needs. If your work demands professional-grade reliability and advanced diagnostic features, the Fluke 117’s premium price reflects its targeted capabilities. For most hobbyists, educators, and basic electrical work, the Amprobe AM-570 provides a perfectly adequate, wallet-friendly alternative.