Fluke CNX™ 3000 Wireless Multimeter

Fluke CNX™ 3000 Wireless Multimeter is rated 3.7 out of 5 by 3.
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  • Fluke CNX™ 3000 Wireless Multimeter
  • Fluke CNX™ 3000 Wireless Multimeter
  • Fluke CNX™ 3000 Wireless Multimeter
  • Fluke CNX™ 3000 Wireless Multimeter

Key features

The CNX 3000 Wireless Multimeter has all the essentials for convenient test and measurement troubleshooting.

  • AC and DC voltage measurements to 1000V
  • AC and DC current with 0.01 mA resolution
  • Continuity, resistance, diode test, capacitance and frequency measurements
  • MIN/MAX Recording
  • CAT III 1000 V, Cat IV 600 V; IP54

Plus, the CNX wireless enabled modules measure AC voltage, AC current and temperature, which display on the CNX Wireless Multimeter. Choose a standard clamp or flexible clamp to measure AC current. Mix and match modules to suit your unique measurement needs. Read the primary measurement on the main display, and up to three modules at any one time. Modules are available separately or as part of CNX kits.

This product is discontinued or reclassified

Product overview: Fluke CNX™ 3000 Wireless Multimeter

Work Faster, Safer and Easier with CNX Wireless Test Tools

Fluke's CNX Wireless Test Tools put tools, not your body, near live electrical panels. It's simple. Connect the remote modules, whether they are voltage modules, current clamps, flexible current loops or thermometers, and read the results on the CNX 3000 Wireless Multimeter from a safe distance. You can display the meter measurement, plus readings from up to 3 wireless modules.

Don't Get Bogged Down While Isolating Intermittent Electrical Faults

Timing is everything when trying to find an intermittent problem and the hard part is, it doesn't always show up when you have your meter connected. We've solved that problem with CNX – leave your CNX remote modules connected to log measurements and walk away to address other issues. You can then download the data for further analysis.

Work Safely Near Electrical Panels While Wearing Less PPE

Personal protective equipment (PPE) can save your life, but it's bulky, hot and hard to work in. With CNX, there's no need to work in front of live open panels or moving/hazardous machinery.

Picture having the ability to access live readings without being exposed to the live panel. It's easy. Just deenergize the cabinet, open the panel while wearing PPE and connect your CNX modules. Close the cabinet, reenergize and let the CNX multimeter work, reducing the risk of arc flash by separating yourself from hazardous measurement situations.

Testing 3-Phase is Now Faster and Cheaper

When your cabinet is deenergized, attach a CNX current clamp to each phase. Close, reenergize and start taking readings. What used to take hours and use costly equipment can be done in minutes with an affordable CNX wireless system.

Take 3-Phase Measurements in 1/3 the Time. Add your laptop and go from logging to analysis and diagnosis

You can solve problems faster by seeing live measurements from multiple test points on a single screen. With a CNX wireless test tool, you can:

  • Take 3-phase measurements in 1/3 the time
  • Add your laptop and go from logging to analysis and diagnosis
  • Record over time using the CNX wireless modules and monitor circuit load changes for an hour, a shift or a week
  • Use the CNX wireless USB adapter to collect logged data from remote modules by walking past a working module and downloading logged data
  • Perform for analysis with your PC and the CNX wireless test tool software. View data or graphs to see problems easily on the computer display

Specifications: Fluke CNX™ 3000 Wireless Multimeter

For all specifications: accuracy is specified for one year after calibration, at operating temperatures of 18 °C to 28 °C, with relative humidity at 0 % to 90 %. Accuracy specifications take the form of ± ([ % of Reading ] + [ Number of least significant digits ]).

Detailed Specifications
AC Voltage
Range ¹ / Resolution600.0 mV / 0.1 mV
6.000 V / 0.001 V
60.00 V / 0.01 V
600.0 V / 0.1 V
1000 V / 1 V
Accuracy ², ³45 Hz to 500 Hz1.0 % + 3
500 Hz to 1 kHz2.0 % + 3

¹ All AC voltage ranges are specified from 1 % of range to 100 % of range.
² Crest factor of ≤ 3 at full scale p to 500 V, decreasing linearly to crest factor < 1.5 at 1000 V.
³ For non-sinusoidal waveforms, add –(2 % of reading + 2 % full scale) typical, for crest factor up to 3.

DC Voltage, Continuity, Resistance, Diode Test and Capacitance
mVRange ¹ / Resolution600.0 mV / 0.1 mV
Accuracy0.09 % + 2
VRange ¹ / Resolution6.000 V / 0.001 V
60.00 V / 0.01 V
600.0 V / 0.1 V
1000 V / 1 V
Accuracy0.09 % + 2
0.15 % + 2
)))Range ¹ / Resolution600 Ω / 1 Ω
AccuracyMeter beeps at < 25 Ω, beeper detects opens or shorts of 250 μs or longer.
ΩRange ¹ / Resolution600.0 Ω / 0.1 Ω
6.000 kΩ / 0.001 kΩ
60.00 kΩ / 0.01 kΩ
60.00 kΩ / 0.1 kΩ
600.0 kΩ / 0.001 MΩ
50.00 MΩ / 0.01 MΩ
Accuracy0.5 % + 2
0.5 % + 1
1.5 % + 3
Diode testRange ¹ / Resolution2.000 V0.001 V
Accuracy1 % + 2
μFRange ¹ / Resolution1000 nF / 1 nF
10.00 μF / 0.01 μF
100.0 μF / 0.1 μF
9999 μF ¹ / 1 μF
Accuracy1.2 % + 2
10 %

¹ In the 9999 μF range for measurements to 1000 μF, the measurement accuracy is 1.2 % + 2.

AC and DC Current
(45 Hz to 1 kHz)
Range ¹ / Resolution60.00 mA / 0.01 mA
400.0 mA ³ / 0.1 mA
Accuracy1.5 % + 3
mA DC ²Range ¹ / Resolution60.00 mA / 0.01 mA
400.0 mA / 0.1 mA
Accuracy0.5 % + 3

¹ All AC current ranges are specified from 5 % of range to 100 % of range.
² Input burden voltage (typical): 400 mA input 2 mV/mA.
³ 400.0 mA accuracy specified up to 600 mA overload.

 Range ¹ / Resolution99.99 Hz / 0.01 Hz
999.9 Hz / 0.1 Hz
9.999 kHz / 0.001 kHz
99.99 kHz / 0.01 kHz
Accuracy0.1 % + 1

¹ Frequency is specified up to 99.99 kHz in volts and up to 10 kHz in amps.

Input Characteristics
OverloadProtection1100 V RMS
Input Impedance
> 10 MΩ < 100 pF
Common Mode Rejection Ratio
(1 kΩ unbalance)
> 120 dB at DC, 50 Hz or 60 Hz
Normal Mode Rejection> 60 dB at 50 Hz or 60 Hz
OverloadProtection1100 V RMS
Input Impedance
> 10 MΩ < 100 pF
Common Mode Rejection Ratio
(1 kΩ unbalance)
> 60 dB, DC to 60 Hz
OverloadProtection1100 V RMS
Input Impedance
> 10 MΩ < 100 pF
Common Mode Rejection Ratio
(1 kΩ unbalance)
> 120 dB at DC, 50 Hz or 60 Hz
Normal Mode Rejection> 60 dB at 50 Hz or 60 Hz
Open circuit test voltage
OverloadProtection1100 V RMS
Input Impedance
< 2.7 V DC
Full scaleTo 6 MΩ: < 0.7 V DC
50 MΩ: < 0.9 V DC
Typical short circuit current< 350 mA
OverloadProtection1100 V RMS
Input Impedance
< 2.7 V DC
Full scaleTo 6 MΩ: 2.000 V DC
Typical short circuit current< 1.1 mA
mAOverload ProtectionFused, 44/100 A, 1000 V FAST Fuse
Overload600 mA overload for 2 minutes maximum, 10 minutes rest minimum
MIN/MAX Recording
DC functionsThe specified accuracy of the measurement function ± 12 counts for changes > 350 mS in duration
AC functionsThe specified accuracy of the measurement function ± 40 counts for changes > 900 mS in duration
General Specifications
Maximum voltage between any terminal and earth ground1000 V DC or AC RMS
Ω fuse protection from A inputs0.44 A (44/100 A, 440 mA), 1000 V FAST Fuse, Fluke specified part only
Display (LCD)Update rate: 4/sec
Volts, amps, ohms: 6000 counts
Frequency: 10,000 counts
Capacitance: 1,000 counts
Battery typeThree AA Alkaline batteries, NEDA 15A IEC LR6
Battery life300 hours minimum
TemperatureOperating: -10 °C to 50 °C Storage: -40 °C to 60 °C
Relative humidity0 % to 90 % (0 °C to 35 °C)
0 % to 75 % (35 °C to 40 °C)
0 % to 45 % (40 °C to 50 °C)
AltitudeOperating: 2,000 m
Storage: 12,000 m
Temperature coefficient0.1 X (specified accuracy) / °C (< 18 °C or > 28 °C)
Wireless frequency2.4 GHz ISM Band 20 meter range
Size (H x W x L)4.75 cm x 9.3 cm x 20.7 cm (1.87 in x 3.68 in x 8.14 in)
Weight340 g (12 oz)
Safety standardsUS ANSI: ANSI/ISA 61010-1 / (82.02.01): 3rd edition
CSA: CAN/CSA-C22.2 No 61010-1-12: 3rd edition
CE European: IEC/EN 61010-1:2010
Electromagnetic compatibility
EN 61326-1:2006, EN 61326-2-2:2006
ETSI EN 300 328 V1.7.1:2006, ETSI EN 300 489
V1.8.1:2008, FCC Part 15 Subpart C Sections 15.207, 15.209, 15.249
Ingress Protection (IP) ratingIP54

Models: Fluke CNX™ 3000 Wireless Multimeter

CNX 3000
Fluke CNXTM 3000 Wireless Multimeter


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Rated 3 out of 5 by from Disappointment with the Fluke CNX sw3000 software While the modules (CNX 3000, CNX t3000, etc) are great, the software to view the Measurements from up to 10 such modules using the USB stick and software version FlukeCNX_SW3000_SEInstall_10017 is very limited with the display of all values simultaneously, but one graph at a time. One would expect that the software would make it possible to collect live data from all 10 modules (including the DMM configured as slaves) simultaneously for a measurement session (let us say every seconds for an hour for example), and then to be able to store the data as 10 columns in a CSV file in order to analyse such data using Excell. Such data would be measured silultaneously which is usefull in a lab. Such a function would allow for a multiple wireless synchroneous datalogger. It is believed that the modules do not need any change. Only the software is missing this basic feature for a proper datalogging lab use. Otherwise, the products (modules and DMM) look good. configuration is simple. The products seem adapted for industrial work.
Date published: 2014-04-25
Rated 4 out of 5 by from Great meter but has so much more potential. I have been using the meter for over 6 months now. We are highly restricted with working with live electricity and using the meter and receivers helps with troubleshooting equipment without having to have the panels open. Using live view on the computer has also been a great help with tracking troublesome problems that you would usually need an analog meter to see the problem. Also with the meter and live view both being able to watch what happens between two separate data points with real time relations between them helps out with finding delay problems and problems with differential inputs.  The negatives are that sometimes getting the modules to connect can be a bit of a pain and have a long delay so you don't know if it failed or just hasn't found it yet. You only have a choice of AC voltage, AC current, and temperature probes that you can connect. If they had DC voltage and DC current modules and/or the Main meter had logging capabilities this Meter would get an A+ even with the weak connection quality.  Overall this meter is great for improving the safety aspect when troubleshooting equipment. When testing high horse or medium voltage drives being able to do so from a distance with the cabinets closed alone makes this a product worth having. 
Date published: 2014-03-21
Rated 4 out of 5 by from Good concept, needs some additional help with the manuals This unit does everything it states, and the remote location capabilities makes it a valuable tool when working in power-buss panels that cannot have hand/eye access while powered (cabinet doors need to be closed..) The software instructions are not as clear as they should be, as it took several atempts to "bind" the two modules and retain them in the meter. I found the range a little bit limited, as wooden walls, steel-bulkheads, etc, seem to affect the range (I found only 25-30-feet within a standard structure-wall building.) The software is also only Windows 7, and as I installed it on an XP platform, it worked- but as soon as I started the program and clicked on the search for modules, it re-booted my desktop (twice.) I'll reinstall the software on my Windows 7 laptop and hopefully it will solve this issue. My advice/opinion is that there are still many XP systems running out there, and the software should have some support for older OS software. My laptops on the bench are all XP (many older test equipment software have not upgraded to Windows 7 or higher...)
Date published: 2013-06-07
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