FLORIDA, United States, 6 February 2025: Posifa Technologies will be participating in AHR Expo 2025, set to take place from February 10 to 12 at the Orange County Convention Center in Orlando, Florida. Making the announcement through a Press Release, the California-headquartered sensor solutions company said visitors to Booth 893 at the Expo will have the opportunity to explore the company’s latest innovations in sensor technology for the HVACR industry, including MEMS-based A2L refrigerant leak detectors, anemometer sensors, gauges and vacuum transducers.

Pofisa said a highlight of its exhibit will be its PGS6454-R and PGS6032-R MEMS A2L refrigerant leak sensors, which the company added have gained UL recognition. Posifa said the sensors meet the stringent safety and performance requirements, outlined in Annex LL of UL 60335-2-40:2022, fourth edition, as verified by UL Solutions. It said the sensors are designed for applications in heat pumps, air conditioners and dehumidifiers, and that they detect A2L refrigerant concentrations by measuring the change in thermal conductivity of gas mixtures. According to the company, the technology enables early leak detection, enhancing safety and efficiency while ensuring long-term reliability of over 15 years in harsh conditions.

Posifa said it will also be displaying its PAV5000 series MEMS anemometer sensors, which it added is engineered for seamless integration into portable anemometers and fixed in-duct air velocity monitors. The company said it markets the sensors as being fully calibrated and temperature-compensated, thereby offering precise airspeed measurement within a robust probe-style design. Pofisa said, “Unlike traditional thermistor-based sensors that rely on delicate thread connections, the PAV5000 series features a solid silicon chip mounted flush onto a PCB, making it highly resistant to damage from vibration, drops, and collisions.”

For vacuum applications, Posifa said, it will be highlighting its PVC6100 series MEMS Pirani gauges, which it added will provide high accuracy and long-term stability for ATM to medium vacuum measurements. The gauges integrate the sensing element and digital electronics into an individually calibrated probe to eliminate the need for recalibration when replacing probes and thereby reducing overall costs, the company said. Additionally, the devices can be customised to emulate the output voltages of other manufacturers’ gauges, enabling seamless plug-and-play replacement without the need for software or hardware modifications, the company claimed.

Posifa said it will also be showcasing its MEMS Pirani vacuum transducers, including the PVC4000, PVC4100 and PVC5100 series. The transducers, designed for OEM integration, are fully calibrated and ideal for digital vacuum gauges and leak detection in vacuum-insulated panels, the company said, adding that each unit features a surface-mounted MEMS Pirani sensor and microcontroller-based measuring electronics within an ultra-compact PCB assembly, complete with a connector-terminated wire harness.