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Fluke 27 II & Fluke 28 II - Rugged IP 67 Industrial Multimeters

Fluke 27 II: Avg. responding multimeter Fluke 28 II: True rms multimeter. Multimeters which define a new standard for harsh conditions.


The NEW Fluke 27 II and Fluke 28 II digital multimeters define a new standard for operating in harsh conditions with the features and accuracy to troubleshoot most electrical problems.

Both meters have a waterproof and dustproof IP 67 rating and have been designed and tested to withstand a 3 m (10 ft) drop. Their extended operating temperature range is -15°C to +55°C (5°F to 131°F) at 95% humidity, and -40°C for up to 20 minutes. MSHA approval is pending.

Fluke 20 Series Multimeters are built to work in the toughest environments.

A new standard for durability

The new Fluke 27 II and 28 II digital multimeters (DMMs) define a new standard for operating in harsh conditions.

Engineered to be waterproof, dustproof and impact resistant, these ultra-tough DMMs keep their users productive in the most challenging jobsite conditions. Federal Mine Safety and Health Administration (MSHA) approval is pending.

When enclosed in their protective yellow holsters, both meters will float in fresh or salt water. Holsters are reversible to protect the display and controls in storage. Both meters feature backlit keypad buttons, large display digits and display backlighting for easy visibility in low-lit areas.

The Fluke 27 II multimeter is an average responding meter with extended ac voltage bandwidth to 30 kHz.

The Fluke 28 II multimeter provides additional functionality. It is a True-rms meter with a high-resolution 20,000-count display mode and includes a built-in thermometer so users can take temperature readings without a separate instrument. It captures peak min/max and features a low-pass filter to ensure accurate voltage and frequency measurements on adjustable speed drives and other electrically noisy equipment.

The Fluke 27 II and Fluke 28 II withstand hazardous 8,000 volt spikes and comply with second edition IEC and ANSI electrical safety standards. They are safety rated for use in CAT IV 600 V/CAT III 1000 V working environments. Both meters have best-in-class 800-hour battery life.

Made in the USA.

  • Measure up to 1000 V ac and dc.
  • Measure up to 10A (20A for 30 seconds).
  • 10,000 μF capacitance range.
  • Frequency to 200 kHz.
  • Extended ac voltage bandwidth: 15 Hz to 20 kHz (28 II), 40 Hz to 30 kHz (27 II).
  • Built in thermometer conveniently allows you to take temperature readings without having to carry a separate instrument (28 II).
  • Resistance, continuity and diode test.
  • Min/Max and average recording to capture variations automatically.
  • Peak min-max (28 II).
  • Unique function for accurate voltage and frequency measurements on adjustable speed motor drives and other electrically noisy equipment (28 II).


  • New – IP 67 waterproof & dustproof protection, completely sealed for use in harsh environments.
  • Designed to withstand 3 meter drop (with holster).
  • Hi resolution 20,000 count display mode (28 II).
  • True-rms ac voltage and current for accurate measurements on non linear signals (28 II).
  • Average responding voltage and current for measurements (27 II).
  • New – Backlit keypad buttons allow for easy visibility in low-lit areas.
  • Large display digits and 2-level bright white backlight for increased visibility.
  • Reversible holster for added protection when not in use.
  • Withstands hazardous 8,000 volt spikes caused by load switching and faults on industrial circuits and complies with second edition IEC and ANSI electrical safety standards.
  • Long battery life (800 hours).
  • Relative mode to remove test lead resistance from low ohms measurements.
  • Auto and manual ranging for maximum flexibility • Optional magnetic hanger for easy setup and viewing while freeing your hands for other tasks.
  • MSHA approval (pending).


Accuracy Specifications


Fluke 27 II

Fluke 28 II

DC voltage

Max resolution

0.1 mV to 1000 V


0.1% + 1 ct 0.05% + 1 ct

AC voltage

Max resolution

0.1 mV to 1000 V


0.5% + 3 cts 0.07% + 4 cts

DC current

Max resolution

0.1 µA to 10 A


0.2% + 4 cts 0.2% + 4 cts

AC current

Max resolution

0.1 µA to 10 A


1.5% + 2 cts 1.0% + 2 cts


Max resolution

0.1Ω to 60 MΩ

Display counts

6000 6000 / 19,999


1 nF to 9999 µF


0.5 Hz to 199.99 kHz


- -200°C to + 1090C

Low pass filter (measurement of VSDs)

- Yes


CAT IV 600V, CAT III 1000V

IP rating

IP 67


Three AA batteries

Battery life

800 hours
General Specifications



Bar graph / backlit

Yes / Yes

Data storage

Peak transient capture

250 μS (28 II)



Reading hold


Other Features

Relative readings (zero)


Battery type

Three AA batteries

Warranty & Protection

Safety rating

CAT IV 600 V/CAT III 1000 V

External protection

Rubber holster

Drop test

10 feet drop test

Dustproof / waterproof

Yes, IP 67 rated


Limited lifetime

Size (HxWxL) with holster

6.35 x 10.0 x 19.81 cm (2.5" x 3.93" x 7.8")

Ordering Information


Fluke 27 II

Fluke 27 II Rugged IP 67 Avg. Responding Multimeter

Fluke 28 II

Fluke 28 II Rugged IP 67 True-rms Multimeter


Holster, test leads, alligator clips, 80BK-A temperature probe
(28 II), manual, CD-ROM, three AA batteries (installed)


PV 350

Pressure Vacuum Module
AC Current Clamp
AC/DC Current Clamp
High Voltage Probe

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