FLUKE-28II-EX Digital Multimeters
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Fluke 28 II Ex Intrinsically Safe True-rms Digital Multimeter is used in a wide range of hazardous settings.The 28 II Ex gives high-end test and troubleshooting power you need is packed into the most rugged intrinsically safe (IS) DMM Fluke has ever built

- Intrinsic safety plus regulatory approvals
- A completely sealed, IP67 rated case
- Withstands drops up to 10 feet or 3 meters (with holster)
- Dustproof per IEC60529 IP6x
- Waterproof per IEC60529 IPx7
- Meets IEC Overvoltage Electrical Safety Standard No. 61010-1:2001
- Reversible holster for added protection of the display when not in use
- 4 ½ digit mode for precise measurements (20,000 counts)
- True-rms ac voltage and current for accurate measurement on nonlinear signals
- Measures up to 1000V and 10A ac and dc (note that Ex zones require reduced measurements)
- Low pass filter ensures accurate voltage and frequency measurements on variable speed motor drives (VSDs)
- Frequency to 200 kHz and % duty cycle to help you diagnose VSDs and switching power supplies
- Resistance, continuity and diode test
- 10,000 µF capacitance range for components and motor caps
- Conductance measurements for high resistance or leakage tests
- Min/Max-Average and Peak capture to record transients and variations automatically
- Relative mode to remove test lead interference on resistance measurements
- Auto and manual ranging for maximum flexibility
- Input Alert protects you by chirping and flashing “Lead when leads are plugged into the wrong inputs
- Backlit keypad buttons provide extra visibility in poorly lit areas, even when you’re wearing full PPE
- Large display digits and 2-level bright white backlight also increases visibility
- Long battery life – 400 hours typical without backlight (Alkaline)
- Optional magnetic hanger for easy setup and viewing while freeing your hands for other tasks

Major Applications
It measures two or more electrical values—principally voltage (volts), current (amps) and resistance (ohms).
Technical Specifications
- DC voltage: 0.1 mV to 1000 V
- AC voltage: 0.1 mV to 1000 V
- DC current: 0.1 µA to 10 A
- AC current: 0.1 µA to 10 A
- Resistance: 50 M Ohm
- Capacitance :10 nF to 9999 µF
- Frequency : 0.5 Hz to 199.99 kHz
- Conductance: 60 nS
- Diode Test: 2 V
- Duty Cycle: 0.0 % to 99.9 %
- Display counts: 6000 counts / 19,999 counts

General Specifications
- Min/Max/Avg Recording: Display signals up to approximately 100 ms
- Safety Certifications: ATEX, NEC-500, IEXEx, GOST R Ex
- Display: LCD, with backlight
- External protection: Rubber holster
- Withstands drops up to 10 ft or 3 m (with holster)