MPS™ Refrigerant Gas Sensors
Precise and dependable detection of A1, A2L, and A3 refrigerant gases commonly used in HVAC & Refrigeration applications.
THE MPS™ GAS SENSOR
The Gold Standard in Sensor Technology
Low Maintenance, High Accuracy, and Robust Performance
No field calibration
Extremely poison resistant and no required field calibration eliminates the prohibitive cost of quarterly calibration trips & sensor replacements.
- Highly accurate gas detection
Resolution to 0.1% LEL with built-in environmental compensation for temperature, relative humidity, and pressure for near-zero false positives.
- Very wide operating range & self-testing capability
-40°C to 75°C operating range with up to 100% relative humidity. Built-In Self-Test (BIST) capability continuously evaluates the system to ensure it is operating to specification.
- 15-year sensor life
Unparalleled 15-year sensor life means low total cost of ownership and ensures uninterrupted monitoring.
- Certified as Intrinsically Safe
Class I Div 1 / Zone 0 sensor certified to FM, ATEX, and IECEx, and compliant with sensor requirements in UL60335‑2‑40, UL/IEC 60079‑29‑1, and UL/IEC 60335‑2‑40.
The MPS™ Refrigerant Sensor Family
| Feature | MPS™ A1 Sensor | MPS™ A2L Sensor | MPS™ A3 Sensor |
|---|---|---|---|
| No required field calibration | |||
| Immune to poisoning | |||
| Immune to saturation | |||
| UART + Analog Out | |||
| 15-year sensor life | |||
| Power-On-Self-Test (POST) | |||
| Built-In-Self-Test (BIST) | |||
| Detects flammable gas during start-up | |||
| Gas Detected | R-410A |
R-32 R-454A R-454B R-454C R-1234ze |
R290 (Propane) |
| Applications |
Comfort Cooling Residential HVAC |
Residential HVAC Heat Pumps |
Commercial Refrigeration Residential HVAC Heat Pumps |
| Range |
Static Conditions: 1,700-130,000 ppm Dynamic Conditions: 5,100-130,000 ppm |
R-32: 5-100 %LFL R-454A 5-100 %LFL R-454B: 9-100 %LFL R-454C: 8-100 %LFL R-1234ze 9-100 %LFL |
5-100 %LEL |
| Resolution | 130 ppm | 0.1% LEL | 0.1% LEL |
| Certifications | N/A |
UL60335-2-40 (2022) Annex LL Compliant ATEX/IECEx Certified (S4 Only) |
UL/IEC 60079-29-1 Annex A Compliant UL/IEC60335-2-40 (2022) Compliant ATEX/IECEx Certified (S4 Only) |
| Power consumption | 29mW | 29mW | 27.3 mW |
| Lowest Supply voltage | 3.3 - 5.0 ±5% VDC | 3.3 - 5.0 ±5% VDC | 3.0 - 5.0 ±5% VDC |
The MPS™ Comes in Two Form Factors
S4
Mini
Third Party Validated Performance
Multiple parties have completed performance testing of NevadaNano’s HVAC-R sensors. This includes extensive testing at NevadaNano, thorough evaluation by our customers, and evaluation by the Air-Conditioning, Heating and Refrigeration Technology Institute (AHRTI), a product test lab that serves over 300 HVAC-R manufacturers. NevadaNano’s sensor was the only sensor of eleven sensors evaluated by AHRTI that met all the test criteria required for detecting A2L refrigerant leaks. In all, AHRTI evaluated twenty-eight criteria, evaluating the sensor against the following specs:
- IEC 60335-2-40 (International Electrotechnical Commission).
- UL/CSA 60335-2-40 (Underwriters Lab and Canadian Standards Association).
- ASHRAE 15 (American Society of Heating, Refrigerating and Air-Conditioning Engineers).
- JRA Standard 4068T (Japan Refrigeration and Air Conditioning Industry Association).
Applications and Industries
HVAC-R
- Residential Air Conditioning – all types
- Commercial Air Conditioning
- Industrial Air conditioning
- Data Center cooling
- Server farm cooling
- Hospitals and health care
- Educational Institutions
- Grocery / Food Retail
Heat Pumps and VRF/VRV Air Conditioning
- Commericial and Residential Air Conditioning
- Offices
- Multi Residency Residential Units
- Care Homes
- Public Buildings
- Hotels
Refrigeration / Cold Chain
- Food Production and Processing
- Cold Storage
- Pharmaceutical Units
- Data Centers
- Process Cooling Supermarket Display Cases – Food Retail
- Vending Machines