NevadaNano’s Molecular Property Spectrometer™ (MPS™) A2L Refrigerant Gas Sensor provides accurate and reliable detection of mildly flammable (A2L) R-32, R-454b blends, R-1234yf and other low global warming refrigerant gases common in HVAC applications. With a 1O+ year calibration interval and lifetime, the MPS A2L Refrigerant Gas Sensor delivers industry-leading performance and the lowest total cost of ownership.

Operating Principle

The Molecular Property Spectrometer (MPS) A2L Refrigerant Gas Sensor’s transducer is a micro-machined membrane with an embedded Joule heater and resistance thermometer. The MEMS transducer is mounted onto a PCB and open to ambient air. Presence of a flammable refrigerant gas causes changes in the thermodynamic properties of the air/gas mixture that are measured by the transducer. Sensor data are processed by patent-pending algorithms to report an accurate concentration.

MPS™ A2L Refrigerant Sensor Features:


• Meets UL 60335-2-40 & ASHRAE 15 requirements
• Wide environmental operating range with no cross-sensitivity to rapid T & RH changes
• No false positives
• Extremely fast response time
• Immune to poisoning
• 10+ year calibration interval
• 10+ year lifetime
• Built-in self-test for fail-safe operation
• Industrial and residential packaging options
• Third-party tested
• Available now for integration

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NevadaNano is the developer of the Molecular Property Spectrometer gas-sensing products that use Micro-Electro-Mechanical Systems (MEMS) structures to detect, identify, and quantify chemicals in the air.

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