Analytical Industries Inc., a DwyerOmega brand, designs and manufactures high-quality electrochemical oxygen sensors and gas analyzers. These state-of-the-art instruments support industrial process control and provide reliable breathing-air monitoring for both diving and medical applications. Advanced analyzers and sensors are used across a wide range of industries — from industrial process control and natural gas quality to medical life-support systems and professional diving. Wherever accurate oxygen measurement matters, AII provides the technology to keep operations safe, efficient, and compliant.

DwyerOmega is a leading global manufacturer of precision measurement and control solutions, trusted across industries to enhance operational efficiency, ensure safety, and support sustainability goals. With a legacy of innovation and quality, our products empower customers to monitor, manage, and optimize critical processes with confidence.

AII is a globally trusted manufacturer of high-accuracy electrochemical oxygen analyzers and sensors. With decades of experience, AII’s products are used in industries such as diving, medical gases, industrial gas blending, and natural gas processing.
Renowned for their precision, rugged construction, and ease of calibration, AII analyzers are often deployed in environments where oxygen levels must be carefully monitored to ensure safety, product quality, or regulatory compliance. Their proprietary sensor technology provides long life and stable output, ensuring consistent performance even under harsh conditions.
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