New MPS Refrigerant Gas Sensor provide accurate and reliable detection of mildly flammable (A2L) R-32, R-454b blends, R-1234yf and other low global warming refrigerant gases such as (A1) R744 as well as (A3) R290 and R600 common in HVAC applications. With a 15+ year calibration interval and lifetime, the MPS A2L Refrigerant Sensors deliver industry-leading performance and the lowest total cost of ownership.

Operating Principle

The Molecular Property Spectrometer (MPS) A2L Refrigerant Sensors 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. The 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.

Benefits

• 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
• 15+ year calibration interval
• 15+ year lifetime
• Built-in self-test for fail-safe operation
• Industrial and residential packaging options
• Third-party tested
• Available now for integration
• Temp Operating Range -40 to 75°C
• Humidity Operating Range 0 to 100% RH

Codes & Features

Codes	Description	PKG	Pins	UART	Analog Out	Auto Start
MPS004-S40505-EX	Refrigerant R-32 (A2L)	S4	5		0.4-2V
MPS210-S40309-E0	Refrigerant R-32 (A2L)	S4	3		0.4-2V
MPS210-MN05CC-00	Refrigerant R32 (A2L)	Mini	5		0.4-2V
MPS004-MN0505-00	Refrigerant R-32 (A2L)	Mini	5		0.4-2V
MPS009-MN0505-00	Refrigerant R-404A (A1)	Mini	5		0.4-2V
MPS010-MN0505-00	Refrigerant R-407A (A1)	Mini	5		0.4-2V
MPS011-MN0505-00	Refrigerant R-454B (A2L)	Mini	5		0.4-2V
MPS230-MN0505-00	Refrigerant R-454C (A2L)	Mini	5		0.4-2V
MPS310-S40505-E0	MPS A3 Refrigerant Gas Sensor (R-290)	S4	5		0.4-2V