AlphaSense CH-A3 Pellistor Sensor

The AlphaSense CH-A3 is a high-performance pellistor-based (catalytic bead) gas sensor designed for the detection of combustible gases, including methane, propane, hydrogen, and other hydrocarbons. It is engineered to deliver fast and reliable response in safety-critical applications such as industrial gas leak detection, mining, HVAC, and environmental monitoring systems. The CH-A3 uses a matched pair of active and reference beads for precise signal stability and compensation, ensuring long-term accuracy. With a compact design, high sensitivity, and durable construction, it integrates easily into portable or fixed gas detection systems.

• Detects a wide range of flammable gases (e.g., methane, propane, hydrogen)
• Pellistor (catalytic bead) sensor with fast response time
• Dual-bead design for high accuracy and drift compensation
• Linear output suitable for LEL (Lower Explosive Limit) measurements
• High reliability and stability in industrial environments
• Compact and robust construction for portable or fixed installations
• Compatible with standard gas detection circuitry
• Long operational life with consistent performance
• Suitable for ATEX-rated environments when integrated properly
• Low power requirements for embedded systems use