Fluke 323 Review 2025 [True RMS Clamp Meter]

Last Updated on February 16, 2025

Fluke is a renowned brand known for producing some of the best multimeters on the market, trusted by electricians, engineers, and technicians worldwide. With decades of experience, Fluke designs high-quality digital multimeters that cater to both professionals and beginners, ensuring accuracy, reliability, and ease of use.

One such top-rated digital multimeter is the Fluke 323 Clamp Meter, a versatile and user-friendly tool designed for testing and troubleshooting electrical devices. Whether you’re an experienced technician or a beginner, the Fluke 323 offers intuitive operation, making it easy to use even if you’re not an expert in multimeters.

Key Features of the Fluke 323 Clamp Meter:

✅ True-RMS Technology – Ensures accurate readings for both AC voltage and current.
✅ Sturdy & Durable Design – Built for long-term use in demanding work environments.
✅ Easy-to-Read Display – Clear digital screen for accurate result visualization.
✅ Audible Continuity Sensor – Quickly identifies circuit continuity for troubleshooting.
✅ Meets Safety Standards – Ensures reliable and secure usage for various applications.

Whether you’re an HVAC technician, electrician, or DIY enthusiast, the Fluke 323 digital clamp meter is a perfect choice for accurate and efficient electrical testing.

Read this in-depth Fluke 323 review to explore its features, benefits, and why it’s one of the best clamp meters in its category.

Fluke 323 Clamp Meter- Common FAQs

• Can you measure the amps correctly?

No, a clamp meter doesn’t measure the amps. You need to buy an AC line splitter kit to measure the amperage.

• Is the hold feature last or maximum reading?

The Hold feature freezes the measurement. It is the last reading.

• Does Fluke 323 measure AC or DC amps/voltage?

No, a clamp meter only measures current. So you can check the voltage or resistance directly through this clamp meter.

• How to measure AC/DC voltage on the Fluke 323?

You just need test leads for AC or DC voltage and resistance measurement.

• Can you measure a sine wave?

No, you need an oscilloscope device to measure it.

• Can Fluke 323 measure the starter draw?

No, because it can’t measure high amperage.

• What is the maximum frequency it can measure?

Maximum 65 Hz

• Can Fluke 323 measure milliamps?

No, you cannot read this data.

• Is Fluke’s 323 clamp meter made in the USA?

No, it is made in China.

Technical Specifications of the Fluke 323 True RMS Clamp Meter

Features	Fluke 323 Multimeter
AC current:	Range: 0 to 400.0 A Accuracy: 2% ± 5 digits (45 Hz to 65 Hz) 2.5% ± 5 digits (65 Hz to 400 Hz)
DC Current Range:
DC voltage:	Range: 0 to 600.0 V Accuracy: 1.0% ± 5 digits
AC voltage:	Range: 0 to 600.0 V Accuracy: 1.5% ± 5 digits
Resistance:	Range: 400.0 Ω/ 4000 Ω Accuracy: 1.0% ± 5 digits
AC millivolts:	600.0 mV/0.1 mV
Category rating:	CAT III 600 V CAT IV 300 V
Continuity:	≤ 70 Ω
Data hold:	Yes
AC response:	True-RMS
Warranty:	Two-year
Price:	Check Price

Multimeter Fluke 323 Review in 2025

• Strong plastic housing
• Sturdy carrying case
• Audible continuity sensor
• True RMS sensing meter
• Meets IEC safety standards and is rated for CAT IV installations
• LCD display
• Carry case
• Ergonomic design
• Lightweight clamp meters
• 2 years warranty

Related article: Review of  Klein CL800 AC/DC Digital Clamp meter

Benefits of using the Fluke 323 Clamp Meter

Using this device has an advantage over several meters as it can perform a wide range of functions. It will show you accurate data in both non-linear and linear loads. So let’s check the key features of this affordable clamp meter.

Durable construction

This device will provide you with many years of use. This is because it is sturdily built and can survive the harsh surrounding that electricians work in. It comes with strong plastic housing. The device has better durability than Fluke 115 and Fluke 101 basic multimeter. In addition, it has a sturdy carrying case for proper storage of the device when not in use.

Ergonomic and slim design

If you have been using a large or poorly designed multimeter, it is time you have a slim and excellently designed tool. The Fluke 323 is not only slim but as well ergonomically designed. This makes handling the multimeter to be easy and very comfortable than the Fluke 902 HVAC Clamp meters.

Meets latest safety ratings

People are afraid to get hurt or damage the device during use. That’s why it is important to check if the device meets certain safety standards on the tests that you want to carry out. The 323 DMM has a CAT IV 300V/CAT III 600 V safety rating. It matches IEC safety rating standard 61010-1 and is as well rated for CAT IV installations to 300V and CAT III installations to 600V. The meter features three test leads with safety shrouds to show accurate readings.

Accurate and fast device

The Fluke 323 digital multimeter provides accurate results, and these are displayed very quickly. This allows the user to take several tests and troubleshoot within a very short period of time.
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Versatile tool

The Fluke 323 is able to test AC current up to 400 amp, AC and DC voltage up to 600V, and resistance to 4 kilohms. The only thing that it doesn’t carry out is to measure DC current. But the jaw opening measures current in a conductor up to 30mm without touching or interrupting the circuit.

Related topics: Latest top 10 HVAC Multimeter Comparison Table

Easy to use and carry

There is no great feeling like having a simple-to-use multimeter device. Whether you are a startup electrician, DIY or professional engineer, using this device is simple and clear. Every detail and information that you need to know about the device is included in the user’s manual. Every port and button is also clearly labeled for easy use.

It is silent

Unlike some multimeters on the market, the Fluke 323 multimeter is silent or not noisy. So, you don’t have to be disturbed by the noise usually made by different multimeters. Just carry out your tests and troubleshoot without any loud noise.

Fairly priced

Although this digital multimeter is able to perform a wide range of tests, it is offered at a very favorable price. It is far lower than the Fluke 289 True-RMS logging multimeter and advanced Fluke 87V. So, you get value for your money when you purchase it, as it still offers accurate and quick results.

Warranty

The manufacturer has full trust in this multimeter, and they provide a 2-year warranty to buyers of the tool. Not all brands offer warranties. Hence, this is a bonus to the customer.

Troubleshooting table for the Fluke 323 True RMS Clamp Meter:

Issue	Possible Cause	Solution
Clamp meter not measuring DC current	– Fluke 323 is designed to measure only AC current, not DC current.	– Use the clamp feature exclusively for AC current measurements. For DC current, consider using a different model like the Fluke 325, which supports DC current measurement.
No reading when measuring AC current	– Attempting to measure current on a multi-conductor cable, causing magnetic field cancellation.	– Ensure the clamp is placed around a single conductor to obtain an accurate reading.
Meter displays ‘OL’ when measuring AC voltage	– Possible internal component failure or damage from impact.	– If the meter has been dropped or subjected to physical stress, internal damage may have occurred. Contact Fluke support for repair or replacement options.
Battery leakage causing corrosion	– Expired or faulty batteries leading to leakage and terminal corrosion.	– Regularly inspect and replace batteries as needed. If corrosion occurs, clean the terminals carefully or consult Fluke support for maintenance advice.
Resistance measurements not displaying correctly	– Fluke 323 has a resistance measurement limit of up to 4 kΩ.	– For resistance measurements exceeding 4 kΩ, use a multimeter with a higher resistance range capability.

Shortcomings of the Fluke 323 multimeter

• It doesn’t come with a screen light which makes the reading of results in the dark to be a bit challenging.
• It is a bit challenging to use as you have to hold the probes and the device at the same time. This is because the leads don’t fit well and are a bit lost.

Fluke 323 vs. 324

What is the difference between Fluke 323 and 324?

Features	Fluke 323	Fluke 324
AC Current Range:	0 to 400.0 A	0 to 40.00 A /400.0A
Voltage Range AC/DC:	0 to 600.0 V	0 to 600.0 V
Resistance Range:	0 to 400.0 Ω /4000 Ω	0 to 400.0 Ω /4000 Ω
Continuity:	≤ 70 Ω	≤ 30 Ω
Backlight:	No	Yes
Data hold:	Yes	Yes
Contact Temperature:	No	-10.0°C to 400.0°C (14.0°F to 752.0°F)
Capacitance:	No	0 to 100.0 µF/100 µF to 1000 µF
Dimensions:	9.5 x 4.2 x 2.7 inches	9.5 x 4.2 x 2.7 inches
Weight:	265 g	208 g
Warranty:	Two year	Two year
Price:	Check Price	Check Price

Final Thoughts

If you want a digital multimeter that measures AC/DC voltage, resistance, continuity, and AC current, then you should try the Fluke 323 digital multimeter device. This ergonomically designed and lightweight multimeter will help you test and troubleshoot various electrical devices. It is sturdily constructed for longevity. Also, its a slim design and compact design for fitting in tight areas. The device has a carrying case for safe storage and easy carry from one place to another. Using the multimeter device is safe as it meets different safety ratings like CAT III 600V and CAT IV 300V. For those interested in purchasing this DMM, the manufacturer will give them a 2-year warranty. Comment below if you have any questions after reading this Fluke 323 review.

Frequently Asked Questions (FAQs)

1. What is the Fluke 323 Clamp Meter used for?

   • The Fluke 323 is used for measuring AC current, AC/DC voltage, resistance, and continuity in electrical systems.

2. Does the Fluke 323 measure DC current?

   • No, it only measures AC current (up to 400A), but it does support both AC and DC voltage readings.

3. What is True RMS, and why is it important?

   • True RMS ensures accurate readings for non-linear and fluctuating electrical signals, making it ideal for modern electronics and industrial applications.

4. What is the maximum AC current the Fluke 323 can measure?

   • It can measure up to 400A AC using its clamp feature.

5. Can the Fluke 323 measure resistance and continuity?

   • Yes, it measures resistance up to 4 kΩ and includes a continuity buzzer for circuit testing.

6. Is the Fluke 323 suitable for electricians?

   • Yes, it is widely used by electricians, HVAC technicians, and maintenance professionals due to its durability and accuracy.

7. Does the Fluke 323 have a backlit display?

   • No, the Fluke 323 does not have a backlight, which may make it harder to read in low-light conditions.

8. Is the Fluke 323 auto-ranging?

   • Yes, it is an auto-ranging clamp meter, meaning it automatically selects the appropriate range for accurate readings.

9. Can the Fluke 323 measure frequency or capacitance?

   • No, it does not measure frequency or capacitance; for those features, consider a more advanced model like the Fluke 325.