Fluke 28 II Ex Intrinsically Safe True RMS Digital Multimeter is a rugged, reliable, and safe tool designed for use in hazardous environments where explosive gases, vapors, or dust may be present. Here are its key features:

1. Intrinsically Safe Design: The Fluke 28 II Ex is certified to be intrinsically safe, meaning it is engineered to prevent ignition of hazardous substances by limiting electrical and thermal energy under normal and fault conditions. It meets the requirements for use in Class I (Div 1 & 2), Group A, B, C, D, Class II (Div 1 & 2), Group E, F, G, and Class III hazardous locations.
2. True RMS Accuracy: The multimeter offers True RMS AC voltage and current measurements, ensuring accurate readings even in noisy electrical environments or when measuring non-linear loads.
3. Durable and Rugged Construction: Built to withstand harsh working conditions, the Fluke 28 II Ex features a rugged design with a dustproof, waterproof, and drop-resistant housing. It is designed to withstand a drop of up to 3 meters (10 feet) onto concrete, ensuring reliable performance in demanding environments.
4. Versatile Measurement Functions: The multimeter can measure AC/DC voltage, AC/DC current, resistance, capacitance, frequency, continuity, and diode testing, providing essential measurement capabilities for a wide range of electrical and electronic troubleshooting and maintenance tasks.
5. Large, Backlit Display: The Fluke 28 II Ex features a large digital display with a backlight, providing clear visibility of measurement results even in low-light conditions or hazardous environments.
6. Data Logging and Recall: It allows users to log and recall measurement data, facilitating trend analysis, troubleshooting, and documentation of test results. It can store up to 20,000 readings for later review and analysis.
7. Safety Ratings: In addition to being intrinsically safe, the multimeter is safety-rated to CAT IV 600V and CAT III 1000V, providing users with confidence in its reliability and safety when working on electrical systems.
8. Battery Life: With its low power consumption design, the multimeter offers extended battery life, ensuring reliable performance during extended periods of use.

Overall, the Fluke 28 II Ex Intrinsically Safe True RMS Digital Multimeter offers ruggedness, accuracy, and safety, making it an ideal tool for professionals working in hazardous environments such as oil refineries, chemical plants, and mining operations.