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Fluke 325 True RMS Clamp Meter

Fluke 325 True RMS Clamp Meter is rated 4.5 out of 5 by 20.
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  • 325
  • 325 What’s In The Box
  • Fluke 325 True-RMS Clamp Meter with DC Current & Frequency
  • Fluke 325 True RMS Clamp Meter

Key features

  • True-rms AC/DC current, voltage, temperature, frequency
  • Clamp meter, test leads, K-type thermocouple and soft case
  • Versatile tool performs most front-line measurement tasks

Product overview: Fluke 325 True RMS Clamp Meter

Troubleshoot problems safely and accurately

The Fluke 325 True-rms Clamp Meter is a reliable, versatile troubleshooting tool for commercial and residential electricians. Featuring a slim design for easy transport and use, and a large display for efficient troubleshooting. In addition to true-rms AC current and voltage on non-linear loads, the 325 measures:

  • DC current
  • DC voltage
  • Temperature
  • Frequency

You’ll carry fewer tools in your bag and get more work done.

Covers most problems you see day-in, day-out

The 325 gives you a strong combination of measurement functions, in a tool that is reliable, easy-to-use and affordable. This clamp meter offers True-rms AC voltage and current measurements on non-linear signals. Paired with the CAT III 600 V, CAT IV 300 V safety rating the clamp meter can also measure:

  • Measures AC/DC current up to 400 A through jaw
  • AC/DC voltage to 600 V using test leads
  • Measures frequency from 5 Hz to 500 Hz; resistance to 40 kΩ
  • Measures temperature from -10 °C to 400 °C with included K-type thermocouple
  • Min/Max function records important values

Comes with a two-year warranty

Specifications: Fluke 325 True RMS Clamp Meter

Specifications
AC currentRange40.00 A / 400.0 A
Accuracy2% ± 5 digits (45 Hz to 65 Hz)
2.5% ± 5 digits (65 Hz to 400 Hz)
DC currentRange40.00 A / 400.0 A
Accuracy2% ± 5 digits
AC voltageRange600.0 V
Accuracy1.5% ± 5 digits
DC voltageRange600.0 V
Accuracy1.0% ± 5 digits
ResistanceRange400.0 Ω / 4000 Ω / 40.00 kΩ
Accuracy1.0% ± 5 digits
Continuity≤ 30 Ω
Capacitance
0 to 100.0 μF / 100μF to 1000 μF
Frequency5.0 Hz to 500.0 Hz
AC responseTrue-RMS
BacklightYes
Data holdYes
Contact temperature-10.0°C to 400.0°C (14.0°F to 752.0°F)
Min/MaxYes
SizeH x W x D (mm)207 x 75 x 34
Max wire diameter30 mm (600 MCM)
Weight283 g
Category ratingCAT III 600 V
CAT IV 300 V
WarrantyTwo-year

Models: Fluke 325 True RMS Clamp Meter

Fluke 325
Fluke 325 True-RMS Clamp Meter
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Includes:

  • Fluke 325 True-RMS Clamp Meter
  • TL75 Test Leads
  • Type K Thermocouple
  • Two AAA Batteries (Installed)
  • Soft Case

Reviews: Fluke 325 True RMS Clamp Meter

Rated 1 out of 5 by from Poor Quality and Support I have this meter(out of warranty). The battery terminals lost its spring effect making the contacts loose. On requesting the service center for replacement / repair service, they asked me to purchase a new meter for they have no spares and do not repair this meter any more.
Date published: 2020-11-19
Rated 3 out of 5 by from Slightly disappointed Heads up, this is going to be a long read. For background, I do electrical controls for a living, primarily HVAC/temperature controls. We use a lot of thermistors, current transducers, PLC's, pressure transducers, and other devices to control air handlers, pumps, and fans. I've owned this meter about six months. I bought it to replace the Fluke 322 in my tool bag for work. The 322 has been great for the roughly seven years I've owned it, but it doesn't read resistance high enough to test 10k thermistors, so I always carried a second meter in my pickup specifically for reading resistance. I thought a 325 would bring me down to a single meter, since it does everything my 322 does with the addition of up to 40k ohm resistance capability (temperature readings are also a perk, but not part of why I decided on this model). The 325 works as expected for measuring voltage, resistance, frequency, direct current, and sometimes alternating current (more on that to follow). I cannot confirm the temperature readings, since I've never found two temp sensors that perfectly agreed with one another, but I do not trust this meter as much as the Fieldpiece and Amprobe in my pickup, mostly because of how cheesy the thermistor lead looks. I have one major gripe and several minor gripes about this meter. The minors are annoying but livable. I'll start with those: 1) The TL75 leads are unreasonably stiff at room temperature. The leads that came on my 322 and those that I've used on other brand meters are reasonably flexible out of the box and get better with age. Six months later, and I still have to uncoil these from around the meter. 2) The case is too small if you store the leads in it with the meter, and don't even think about leaving the leads connected if you want to zip the case! 3) The knob could be a little tighter. It often gets turned on by wrapping the leads around it (see point 1). The major issue I have with this meter is when it comes to alternating current. I quickly ran into discrepancies between current transducers' and this meter's readings when checking out variable frequency drives. The numbers were far off enough that I replaced current transducers thinking they were faulty, and even returned my first 325 to buy one straight from fluke, thinking I had a faulty/knockoff product. It took a few occurrences before I contacted Fluke regarding the issue. As it turned out, "True RMS" measurements will not align with conventional measurements when it comes to nonlinear loads, such as VFD outputs. True RMS also won't agree with motor nameplates. I was basically told that this meter is "too" accurate, so its readings aren't usable, which doesn't make much sense. I equate it to people who use "upper-level" words at the risk of hindering communication with 90% of people; you're somehow superior (cool), but you've missed the goal of verbal language, which is to communicate with other people. I would have preferred a meter that measures as my 322 does but with the addition of higher resistance. I thought this would be the ticket, but I still carry two meters. If you never encounter nonlinear loads, this meter will be awesome for you! For me, it hasn't lived up to the price tag.
Date published: 2020-09-18
Rated 5 out of 5 by from It’s smaller, lighter and more features packed. I use this everyday at work. And I suffer from white gut butt. So big heavy tools make my pants fall down. This meter does every thing I need and more. Definitely recommend for professionals
Date published: 2020-09-17
Rated 4 out of 5 by from very precise, good quality, too little fleatures. I work with high power AC and DC and need a clamp meter i can trust, this one is, it is very precise, the DC A measure is excellent, as to be expected from fluke of course, but the clamp functionality is very basic, no in-rush current, hold function doesn't work like the 97 series do, no power factor measure, no diode measure capability (Basic! come on!) and no THD measure, the Hz measure is awesome because it works with current and voltage, my other clamp meters only measure Hz with voltage, neat feature fluke!, the clamp is tiny and very confortable to use, display is not as good as, let's say the 117 meter, backlight is too dim, i usually work in places with low light and it is an issue for me, overall, i like it, and recommended it, but you should at the very least, add DIODE, in-rush current, and THD measure please.
Date published: 2018-05-18
Rated 5 out of 5 by from Best clamp meter I've owned I've had this meter going on 2 years. I work on HVAC and Automotive repair. I can check older ignitions, charging, circuit draws, and starter systems. It's extremely versatile for HVAC and compressor diagnosis. It's ruggedness makes it useful indoors and outdoors.
Date published: 2016-12-28
Rated 5 out of 5 by from Meter is simple and Reliable I bought this Fluke-325 clamp meter recently at my new company due to my satisfaction with the one I had at a previous employer. It's easy to carry with my computer when I go to customer sites and always reliable for the needs of a controls engineer.
Date published: 2016-12-22
Rated 5 out of 5 by from Durable, Reliable I have had my 325 True RMS meter almost a year. I am very happy with ease of use, and accuracy. However i have a model 36 clamp meter that has lcd issues, ghosting some call it. Not had any luck finding repair parts for the 36 model thus far.
Date published: 2016-12-11
Rated 5 out of 5 by from Best meter for the money! I run HVAC service and use this meter a lot. Always performs, is rugged, and for most measurements I use is the best in it's class. Can't go wrong with this one.
Date published: 2016-12-10
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