MPS Refrigerant S4

Gas Sensors

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Manufacturer: NevadaNano

MPS Refrigerant Gas Sensor - S4


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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.


  • 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 available 0.4-2V available
MPS210-S40309-E0 Refrigerant R-32 (A2L) S4 3 available 0.4-2V available
MPS210-MN05CC-00 Refrigerant R32 (A2L) Mini 5 available 0.4-2V available
MPS004-MN0505-00 Refrigerant R-32 (A2L) Mini 5 available 0.4-2V available
MPS009-MN0505-00 Refrigerant R-404A (A1) Mini 5 available 0.4-2V available
MPS010-MN0505-00 Refrigerant R-407A (A1) Mini 5 available 0.4-2V available
MPS011-MN0505-00 Refrigerant R-454B (A2L) Mini 5 available 0.4-2V available
MPS230-MN0505-00 Refrigerant R-454C (A2L) Mini 5 available 0.4-2V available
MPS310-S40505-E0 MPS A3 Refrigerant Gas Sensor
S4 5 available 0.4-2V available


Via Magenta, 77/16A
20017 Rho (MI) - Italy
Phone +39 02 3340 0846
VAT: IT04126380155
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Via Magenta, 77/16A
Rho 20017, Italy
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+39 02 3340 0846

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