Fluke 28II True-RMS Multimeter - Fluke-28II

The Fluke 28 II True-RMS Rugged Digital Multimeter is the most environmentally hardenedprofessional multimeter Fluke builds, rated IP67 (waterproof and dustproof), tested to survive3-meter (10-foot) drops onto concrete, MSHA-approved for use in mining environments, and ratedfor operation in 95% humidity from -15°C to +55°C continuous (-40°C for up to 20 minutes). Formaintenance technicians working in mining, oil and gas facilities, coastal environments, constructionsites, or any location where a standard meter would fail from moisture, dust, or physical abuse,the 28 II brings industrial True-RMS measurement capability in a housing that matches the environment.

Key Features

• IP67 Waterproof and Dustproof: Fully sealed against dust ingress (IP6X) andimmersion-proof in 1 meter of water for 30 minutes (IPX7). A&P mechanics working on ramps in rain,mining technicians in wet underground environments, and oil field electricians in harsh process areascan take measurements without protecting the instrument from the environment.
• 3-Meter (10-Foot) Drop Survival: Drop-tested to 3 meters with the holsterinstalled, equivalent to dropping from a maintenance platform, scaffold, or top of a piece ofheavy equipment. The 28 II's overmolded housing and shock-absorbing corners dissipate impact energythat would destroy standard meter housings.
• MSHA-Approved for Mining Environments: The Mine Safety and HealthAdministration approval certifies the 28 II for use in underground coal mining environments wherestandard instruments may not be permitted. The only professional True-RMS multimeter in Fluke'sline with this specific approval.
• True-RMS with 20,000-Count High-Resolution Mode: Accurate measurement onnon-linear loads, VFDs, motor drives, and power electronics, combined with high-resolution4.5-digit capability for precise baseline measurements and fault documentation.
• VFD Low-Pass Filter: The same selectable low-pass filter found in the 87Vblocks ASD carrier frequencies for accurate fundamental voltage and frequency measurement at motordrive output, in a ruggedized housing suitable for the harsh environments where VFD-drivenequipment often operates.
• 800-Hour Battery Life: Double the standard 87V's 400-hour battery life.Extended field deployments in remote or infrequently accessed locations don't require batterymanagement as a mission constraint.
• Backlit Keypad: Individual button illumination for operation in dark miningtunnels, confined underground spaces, and low-light industrial environments where displaybacklight alone doesn't illuminate the control panel.
• -15°C to +55°C Operating Range (-40°C for 20 Minutes): Covers the full rangeof outdoor and industrial temperature extremes, Arctic winter field service, high-ambientprocess plant environments, and surface mine operations in extreme climates.
• Extended AC Bandwidth to 20kHz: Captures harmonic content and high-frequencysignals in power systems beyond the standard 1kHz bandwidth of most portable meters.
• 250µs Peak Capture: Catches voltage spikes from contactors, relay switching,and intermittent wiring faults that occur too quickly for standard display update rates.
• 95% Humidity Tolerance: Survives coastal marine environments, tropicalclimates, and high-humidity process areas where condensation inside standard meters causescorrosion and measurement drift.

Technical Specifications Overview

The 28 II measures AC/DC voltage to 1000V, AC/DC current to 10A (20A for 30 seconds),resistance to 50MΩ, capacitance to 10,000µF, frequency to 200kHz (extended bandwidth to 20kHz),and temperature. Its 20,000-count display mode provides 4.5-digit resolution. Safety rating isCAT IV 600V / CAT III 1000V, the maximum rating for portable instruments. Environmental ratings(IP67, 3m drop, MSHA, -40°C cold soak, 95% humidity) are the most comprehensive in the Flukehandheld line. The 28 II is the instrument for technicians whose environment is the constraint,not their measurement needs.

Harsh Environment & Industrial Applications

• Underground mining electrical maintenance, MSHA-approved for direct use inregulated mining environments without special permits or instrument waivers
• Oil and gas process plant electrical work, wet, dusty, and chemicallyaggressive environments where standard meters fail from housing penetration
• Coastal and marine electrical maintenance, salt air, spray, and high-humidityconditions that rapidly corrode standard meter housings and contacts
• Construction site electrical commissioning, rough handling, concrete dust,rain, and physical abuse on active construction sites
• Pulp, paper, and food processing plant maintenance, high-pressure washdownenvironments and extreme humidity from process steam

Fluke 28 II Calibration

PJi operates an ISO/IEC 17025 Accredited Calibration Lab and can provide NIST-traceable calibration for the Fluke 28 II. Our calibration documentation satisfies FAA Part 145 tool control requirements, ISO 9001 quality system documentation, and AS9100 calibration records. For repair stations, MRO facilities, and quality-certified shops that require documented traceability, PJi is the one-stop source: you get the instrument and you can recalibrate it at PJi.

• Calibration documentation satisfies FAA Part 145 tool control, ISO 9001 quality systems, and AS9100 records requirements
• One-stop source for repair stations, MRO facilities, and quality-certified shops – instrument and calibration certificate in a single transaction
• Calibration-only companies can't sell you the instrument. Major retailers can't calibrate it. PJi does both. Learn more about PJi's ISO 17025 Calibration Services

Why Buy from Pilot John International

Pilot John International is an authorized Fluke distributor with specialized expertise serving aviation maintenance, FAA Part 145 repair stations, and industrial MRO facilities. Unlike Amazon, Grainger, or Test Equipment Depot, which sell Fluke instruments but offer zero calibration services, PJi's in-house ISO/IEC 17025 Accredited Calibration Lab calibrates your instrument at purchase. We stock the full Fluke catalog, ship same-business-day on in-stock items, and our technical staff understands the demands of aviation and industrial electrical maintenance.