Explosive dust environments pose serious risks across many industries, often leading to catastrophic damage and tragic loss of life. When airborne dust particles accumulate in confined spaces and encounter an ignition source – such as electrical or thermal equipment – the result can be a powerful explosion caused by rapid pressure build-up. These environments often resemble dense fog due to low visibility, and unfortunately, they are more common than many realize. Historical data reveals that nearly every industrial sector has experienced incidents involving combustible dust.

Industries Commonly Affected by Combustible Dust

Many industrial processes generate dust as a by-product, especially those involving the storage, handling, or processing of powdered materials. Key sectors include:

Food Processing: Operations involving flour, sugar, grains, instant coffee, soup powders, and custard often produce fine dust particles.

Manufacturing & Recycling: Metal, wood, chemical, plastic, and paper processing facilities frequently handle powdered substances during cutting, coating, mixing, and transport.

Agriculture: Fertilizer plants, composting sites, grain elevators, and silos are prone to dust accumulation.

Mining: Coal mining generates coal dust during crushing and transport. Additionally, methane gas – trapped in coal seams over millennia – is highly flammable and can exacerbate explosion risks.

In these high-risk environments, maintenance equipment must be safe to operate. The Cygnus 1 Ex ultrasonic thickness gauge is specifically engineered for use in explosive atmospheres, including those with flammable dust, gases, or vapors.

Intrinsically Safe Design

Cygnus 1 Ex is Intrinsically Safe, meaning it’s built to prevent ignition under any condition – normal or fault. This is achieved by limiting electrical energy and heat generation within the device. Key safety features include:

• Low output energy to prevent spark ignition.
• Anti-static construction to avoid static charge buildup.
• Voltage clamping to maintain safe electrical levels.
• Redundant safety components.
• Fail-safe battery and component design to prevent overheating.

This safety standard aligns with global Ex Protection Concepts, including IECEx, ATEX, and North American Division systems, ensuring suitability across all classified zones.

Certified for Dust Zones 21 and 22

Cygnus 1 Ex is approved for use in:

• Zone 21: Areas where dust is occasionally present during normal operations.
• Zone 22: Areas where dust is rarely present and only for short durations.

Advanced Features for Efficient Inspections

The Cygnus 1 Ex offers a robust solution for structural inspections in hazardous areas, eliminating the need for plant shutdowns or Hot Work permits. Key benefits include:

Three Measuring Modes: Suitable for various materials, including those with heavy corrosion or protective coatings up to 20mm thick.

Manual Measurement Mode: Enhanced accuracy for complex surfaces, with adjustable gates and Time-Controlled Gain (TCG) to amplify weak echoes.

Flexible Data Logging: Supports linear, template, and 2D/3D grid formats with 16 grid patterns, annotations, and radial point measurements for deeper analysis.

Praised by users as “versatile, multifunctional, and intuitive,” the Cygnus 1 Ex is a trusted tool for safe and efficient inspections in explosive dust environments.