Alphasense Gas Sensors – Unlocking Excellence in Gas Detection

Alphasense delivers world-class gas sensing technologies trusted by industrial workers and OEM manufacturers of portable and fixed gas detectors worldwide. Our sensors are engineered for precision, reliability, and compliance, ensuring safety and performance in critical environments. Explore our major product families below:

Oxygen Sensors
Accurate O₂ measurement for industrial safety. Commonly used in wearable and installed confined space monitors.

Carbon Monoxide Sensors
Protect workers from CO exposure with sensors engineered for precision and low cross-sensitivity. Commonly used in wearable and installed confined space monitors. Ideal for workplace safety in chemical plants, refineries, and mining.

Hydrogen Sulphide Sensors
Exceptional sensitivity and stability for oil & gas, wastewater, and chemical processing safety. Commonly used in wearable and installed confined space monitors. H₂S sensors are widely applied in oil & gas facilities, wastewater treatment plants, and chemical industries for leak detection and worker protection.

Nitric Oxide and Nitrogen Dioxide Sensors
Ideal for air quality and emissions monitoring. NO and NO₂ sensors are used in environmental monitoring stations, industrial emissions control, and research applications for air quality compliance.

Sulphur Dioxide Sensors
Accurate detection for environmental compliance and industrial processes. Commonly used in wearable, installed confined space monitors and outdoor environmental stations. SO₂ sensors are applied in power plants, industrial scrubbers, and environmental monitoring for regulatory compliance.

VOC Sensors
Advanced photoionization and electrochemical technology for volatile organic compound (VOC) detection. Commonly used in wearable, installed confined space monitors and outdoor environmental stations. VOC sensors are common in air quality monitoring, industrial hygiene safety and environmental applications.

Optical Particle Counters
Optical particle counters (OPCs) for dust monitoring in air quality systems. Commonly used in wearable, installed confined space monitors and outdoor environmental stations. OPCs are used in environmental monitoring networks, cleanroom applications, and industrial dust control systems. They can measure Particulate Matter (PM) concentrations: PM1, PM2.5 and PM10, critical for health hazard assessment.

Dual Toxic Gas Sensors
Combined 2 sensors into 1 housing to save space, dual toxic sensors combine H₂S sensing with CO or SO₂ gas measurements. Commonly used in wearable and installed confined space monitors. Used in safety and industrial site monitoring markets.

Specialty Toxic Gas Sensors
Sensors for additional hazardous gases to ensure comprehensive safety. Commonly used in wearable and installed confined space monitors. Includes sensors for Ozone (O₃), Chlorine (Cl₂), Phosphine (PH₃), Ammonia (NH₃), Hydrogen Cyanide (HCN), Hydrogen Chloride (HCl), Ethylene Oxide (EtO), and Hydrogen Peroxide (H₂O₂). These are applied in chemical processing, water treatment, semiconductor manufacturing, and specialized industrial safety applications.

Flammable Gas Sensors
Monitoring methane (CH4) for its lower explosive limit (LEL) and hydrogen gas is critical to prevent explosions. Commonly used in industrial process monitoring applications. Also used in wearable and installed confined space monitors.

Carbon Dioxide Sensors
Alphasense carbon dioxide sensors use NDIR technology to provide stable, selective CO₂ measurement for indoor air quality, HVAC control, safety monitoring, and process applications

Environmental Sensors
Sensors for temperature, relative humidity and pressure provide environmental measurements. These sensors are often used side-by-side with ElectroChemical (EC), Photoionization Detectors (PIDs) and Non-dispersive Infrared (NDIR) sensors.

Accessories
Alphasense support circuits simplify sensor integration and ensure reliable performance across a range of applications. Solutions are available for ppb-level air quality monitoring and ppm-level industrial and safety applications, and are matched to Alphasense sensor technologies. Pre-configured options help reduce development time and support consistent measurement performance