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Launch of the AM4205 A2L Refrigerant Leak Detection Sensor

In late January 2021, the U.S. Presidential Administration put an executive order in place directing the Senate the begin the process of ratifying the Kigali Amendment and the phaseout process for using hydrofluorocarbons (HFCs) as the primary refrigerants in the HVAC/R industry.

As the North American HVAC/R markets prepare for an industry-wide shift to refrigerant blends with a lower Global Warming Potential (GWP), new application challenges have been identified that would require compliance with new system-level performance requirements.

R32 (difluoromethane) and R32-based refrigerant blends have been identified as the lead alternative refrigerant with the capability of reducing the global warming potential (GWP) of refrigerants in the HVAC/R market. Additionally, these blends have the potential to represent a 5% reduction in the HVAC/R demand on the power grid – $6b savings in power generation cost avoidance per the US Energy Information Administration while providing a zero-ozone depletion potential. The unique challenge with R32 and R32-based refrigerant blends is that these gases are mildly flammable per ISO 817:2014, and as such have an A2L classification that would require the HVAC/R systems to incorporate a gas leak detection and mitigation system according to UL 60335-2-40 Edition 3 Annex GG & LL.

Innovaer Technologies and Cubic Sensors & Instruments have launched the AM4205 A2L refrigerant leak detection sensor designed to detect leaks of R32 and R32-based blends in HVAC/R systems.

The AM4205 A2L refrigerant leak detection sensor is designed to ensure UL alignment in the areas of:
Innovaer Technologies and Cubic Sensors & Instruments have launched the AM4205 A2L refrigerant leak detection sensor designed to detect leaks of R32 and R32-based blends in HVAC/R systems. The AM4205 A2L refrigerant leak detection sensor is designed to ensure UL alignment in the areas of:
  • 15+ Years Expected Lifetime
  • Fast Response Time:
  • Measurement Accuracy – No False Positives
  • Long-term Measurement Stability
  • Maintenance Free Installation – Reference Channel and Self-Compensation remove the need for ABC
  • No Measurement Impact due to Temperature or Humidity Changes – High Humidity Alarm
  • Immunity to Poisoning
  • Selective to the target gas being measured

Standard Specification

Operating PrincipleNon-Dispersive Infrared Technology (NDIR)
Measurement Range0-50% LFL
Accuracy+/- 3.75% LFL
Resolution1% LFL
Working Temperature-22˚F to 140˚F (-30˚C to 60˚C)
Power Supply5VDC
Average Current80mA
CommunicationUART TTL, 0.8-4V Analog

Dimensions (LxWxH in mm)

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