Posifa Applied sciences Introduces New MEMS Thermal Conductivity Sensors

Posifa Applied sciences launched a brand new sensor answer for detecting A2L refrigerant leaks in residential and industrial air con methods, warmth pumps and refrigeration gear. The brand new PGS6000 sensors precisely detect A2L refrigerant focus within the air by measuring the change in thermal conductivity of the fuel combination inside the cupboard. This know-how will increase security and effectivity by enabling early detection of leaks whereas offering long-term reliability of 15 years or extra in harsh environments.

The collection makes use of the corporate’s second-generation MEMS thermal conductivity sensing ingredient. It incorporates a patented warmth switch cavity that achieves extremely delicate and repeatable thermal conductivity measurement by eliminating doable occurrences of pure convection contained in the cavity. As thermal conductivity measurement is achieved utterly contained in the sensor chip, most miniaturization could be realized on the gadget stage — a vital functionality for HVAC gear producers who should retrofit the sensors into current designs.

The detectors are designed with a relative humidity sensor and a barometric strain sensor. This strategic incorporation allows the detectors to compensate for thermal conductivity adjustments influenced by variations in humidity and barometric strain, enhancing the accuracy of A2L refrigerant focus measurement. The PGS6000 collection detects R32 and R454B refrigerants, and helps RS485 MODBUS RTU output.