Fluke 28 II Ex Intrinsically Safe Multimeter

Fits hazardous-area electrical troubleshooting where you need an intrinsically safe True-RMS DMM listed for Class I Div 1 / ATEX Zone 1–2, with IP67 protection and CAT III 1000 V / CAT IV 600 V category ratings.

Key advantages

IS-listed family — Class I Div 1 / ATEX Zone 1–2 Ex ia IIC T4 Gb / IECEx.
True-RMS to 1000 V / 10 A class — Ex zones may require reduced measurements; confirm site limits.
IP67 + ~3 m drop — Field ruggedness with holster.
CAT III 1000 V / CAT IV 600 V — Plus resistance, capacitance, frequency, temperature, VSD filter.

Typical applications

Electrical troubleshooting inside Class I Div 1 or ATEX Zone 1–2 areas.
Plants that standardize on an IS True-RMS DMM with IP67 packaging.
VFD and fine-resolution checks where VSD / high-resolution modes matter.

Selection guide

Intrinsic safety — Class I Div 1 / ATEX Zone 1–2 Ex ia IIC T4 Gb / IECEx listed family.
Voltage / current — True-RMS to 1000 V / 10 A class (Ex zones may require reduced measurements).
Protection — IP67; drop-tested to about 3 m with holster.
Safety category — CAT III 1000 V / CAT IV 600 V.
Functions — Resistance, capacitance, frequency, temperature; high-resolution mode; VSD low-pass filter.
Form — Handheld IS DMM with reversible red holster.

Common mistakes

Ordering a non-Ex DMM for Zone 1 / Div 1 work — 28 II Ex is the IS-listed family.
Ignoring that Ex zones may require reduced measurements vs the 1000 V / 10 A class headline.
Treating IP67 as a substitute for the IS certificate — both matter; confirm site approval.
Skipping VSD / high-resolution needs when VFD or fine readings are the duty.

When to RFQ / what to tell us

Required IS marks (Class I Div 1 / ATEX Zone 1–2 Ex ia IIC T4 Gb / IECEx) for the site.
Voltage/current class and whether Ex-zone reduced measurements apply.
Quantity, ship-to, holster/temperature-probe needs.

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Specs

Spec	Value
SKU	30272
Brand	Fluke
Model	28 II Ex Intrinsically Safe Multimeter
Product type	intrinsicallysafemultimeter
Type	Fluke 28 II Ex intrinsically safe true-RMS digital multimeter
Intrinsic safety	Class I Div 1 / ATEX Zone 1-2 Ex ia IIC T4 Gb / IECEx listed family
Voltage / current	True-RMS to 1000 V / 10 A class (Ex zones may require reduced measurements)
Protection	IP67; drop-tested to about 3 m with holster
Safety category	CAT III 1000 V / CAT IV 600 V
Functions	Resistance, capacitance, frequency, temperature; high-resolution mode; VSD low-pass filter
Form factor	Handheld IS DMM with reversible red holster
Document	Fluke 28 II Ex datasheet + UM + media.fluke.com OEM product photos

Documents

Fluke 28 II Ex Intrinsically Safe Multimeter product page

FAQ

Q: Which hazardous-area marks are listed? A: Class I Div 1 / ATEX Zone 1-2 Ex ia IIC T4 Gb / IECEx listed family — confirm the exact certificate against site policy.

Q: Is IP67 enough for Zone 1 without the Ex listing? A: No — IP67 and the IS listing are both on the extract; Ex approval is required for hazardous-area use.

Q: What should I send for a quote? A: Required zone/division marks, voltage class, quantity, ship-to. Compatible with systems using Fluke 28 II Ex — we do not claim authorized-dealer status.

Parameter	Value
Dc Voltage	0.1 mV to 1000 V; +/-(0.05% + 1)
Ac Voltage	0.1 mV to 1000 V true-RMS; +/-(0.7% + 4)
Current	0.1 uA to 10 A AC/DC (Ex zones require reduced measurements)
Resistance	0.1 ohm to 50 Mohm; +/-(0.2% + 1)
Capacitance	10 nF to 9999 uF
Frequency	0.5 Hz to 199.99 kHz
Temperature	-200 to +1090 C (-328 to +1994 F)
Display Counts	6000 / 19999 high-resolution mode
Ingress Protection	IP67; drop-tested to 3 m with holster
Safety Category	CAT III 1000 V / CAT IV 600 V
Intrinsic Safety	Class I Div 1 Groups ABCD T4; ATEX II 2G Ex ia IIC T4 Gb; IECEx Ex ia IIC T4 Gb
Battery Life	Three AAA Ex-approved; ~400 h typical without backlight
Form Factor	Handheld intrinsically safe true-RMS DMM with reversible holster
Family	Fluke 28 II Ex