What is the Fluke 789/E?

The Fluke 789/E combines a full-featured True-RMS digital multimeter and a loop calibrator with built-in 24V loop power supply into one tool.

Can the meter power a current loop during testing?

Yes, the integrated 24V loop power supply allows you to test transmitters offline without a separate power source.

Does the unit include a built-in HART resistor?

Yes, it includes a selectable 250 ohm HART resistor, eliminating the need to carry an external resistor.

What electrical safety rating does the Fluke 789/E have?

The device is rated for electrical safety according to CAT III 1000 V and CAT IV 600 V standards.

What items are included in the box?

You receive the Fluke 789/E, a TL71 test lead set, AC175 alligator clips, and 4 pre-installed AA 1.5V alkaline batteries.

FLUKE 789/E process meter with 24 V loop power supply - 3977194

Name: FLUKE 789/E process meter with 24 V loop power supply - 3977194
Brand: FLUKE
SKU: 02954126
Price: 1974.47 EUR
Availability: PreOrder

Supplier number: FLUKE 3977194 | EAN 0095969590396

Recommended Retail Price €2,387.72

1,974.47 tax incl.

€1,631.79 excl. VAT (incl. all environmental contributions)

On order: delivered from 12/10/2026

Ordered before 20:00 - delivered as of 12/10/2026
Free shipping
Delivery by DHL

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Streamlined process troubleshooting with Fluke

Practical benefits

Dual multimeter and calibrator: You measure, source, and simulate mA signals while simultaneously performing full digital multimeter tests using a single tool.
Built-in loop power supply: The integrated 24V power supply allows you to power and test transmitters directly in the field without carrying extra gear.
Clear simultaneous dual display: You read mA values and the percentage of span at the same time on a large, backlit screen.

In a nutshell

The right choise for

With the Fluke 789/E, you combine a full-featured True-RMS digital multimeter and a loop calibrator into one single, powerful tool. This eliminates the need to carry multiple devices when troubleshooting and calibrating 4-20 mA process loops in industrial plants. Its built-in 24V loop power supply allows you to power and test transmitters directly in the field without an external source, while the selectable 250 ohm hart resistor removes the need for separate resistors. The large backlit dual display lets you read mA values and span percentages simultaneously. Complete with TL71 test leads, AC175 alligator clips, and four aa batteries, it provides dependable safety rated to cat III 1000 V and cat IV 600 V.

Product information FAQ

€1,974.47

tax incl.

Scope of delivery

Fluke 789 ProcessMeter
AC175 alligator clips
Four (4) AA 1.5V alkaline batteries (installed)
TL71 set of safety measuring leads

Product description:

Now compatible with Fluke Connect app
The Fluke 789 ProcessMeter is the ultimate troubleshooting tool for electricians and instrumentation professionals.
This instrument combines the functionality of a loop calibrator with the power of a digital multimeter.
By equipping the 789 with a temperature measurement module and Fluke Connect's wireless data logging capabilities with ShareLive video call function (sold separately), process engineers can now do much more while carrying much less.
And with the built-in, selectable 250-ohm HART resistor, there's no need to carry a separate resistor either.

Features of the Fluke 789

24V loop power supply
Very large dual display
Improved backlight with 2 brightness settings
Max. permissible load resistance 1200 ohms at mA-source
Heart mode setting with loop power supply and built-in 250 ohm resistor
0% and 100% buttons to toggle between 4 and 20 mA generation for a quick 'span check' (checking zero and full scale)
Externally accessible fuses that are easy to replace
Infrared port for processing data in the FlukeView Forms software (V2.1)

The Fluke 789 also has the following features of the Fluke 787

Accurate digital True-RMS multimeter, 1000 V, 440 mA
DC voltage accuracy of 0.1%
DC current measurement with 0.05% accuracy
Frequency measurement up to 20 kHz
Min/Max/Average/Hold/Relative modes
Diode and through-bell test
Simultaneous display of mA and % scale
20 mA DC current source / loop calibrator / simulator
Manual step function (100%, 25%, coarse, fine) plus automatic step and rise functions
Externally accessible battery that can be easily replaced

Safety standards

Meets standards 1000 volts EN61010-1 CAT III and 600 volts EN61010-1 CAT IV.

Brand FLUKE
02954126
EAN 0095969590396
Supplier number FLUKE 3977194

Frequently asked questions about this product

Answered by specialists

What is the Fluke 789/E?: The Fluke 789/E combines a full-featured True-RMS digital multimeter and a loop calibrator with built-in 24V loop power supply into one tool.
Can the meter power a current loop during testing?: Yes, the integrated 24V loop power supply allows you to test transmitters offline without a separate power source.
Does the unit include a built-in HART resistor?: Yes, it includes a selectable 250 ohm HART resistor, eliminating the need to carry an external resistor.
What electrical safety rating does the Fluke 789/E have?: The device is rated for electrical safety according to CAT III 1000 V and CAT IV 600 V standards.
What items are included in the box?: You receive the Fluke 789/E, a TL71 test lead set, AC175 alligator clips, and 4 pre-installed AA 1.5V alkaline batteries.