Posifa A2L Refrigerant Leak Sensor Achieves Intertek Certification

Posifa Technologies’ PGS6454 MEMS A2L refrigerant leak sensor has received a recognized component certification from Intertek. The Intertek certification verifies the device meets the safety and performance requirements for refrigerant detection systems outlined in Annex LL of UL 60335-2-40:2022 Ed. 4 and CSA C22.2#60335-2-40:2022 Ed. 4. These standards apply to household and similar electrical appliances, including heat pumps, air conditioners and dehumidifiers.

“Receiving this certification from Intertek is significant because it demonstrates that our PGS6454 sensor complies with rigorous international safety and performance standards for A2L refrigerant detection systems in electrical appliances,” said Peng Tu, Posifa Technologies president and CEO. “It provides assurance to manufacturers, regulators, and end-users that our sensor is reliable, safe, and suitable for use in applications involving flammable refrigerants, which are increasingly adopted to meet environmental and efficiency goals.”

Posifa’s PGS6000 series sensors detect A2L refrigerant concentration in the air by measuring the change in thermal conductivity of the gas mixture inside the cabinet. This technology increases safety and efficiency by enabling early detection of leaks while providing long-term reliability of 15 years or more in harsh environments. As thermal conductivity measurement is accomplished completely inside the sensor chip, maximum miniaturization can be realized at the device level — a critical capability for HVAC equipment manufacturers who must retrofit the sensors into existing designs.