P528 Refrigeration Ceramic Pressure Sensors Kavlico P528 Refrigeration Ceramic Pressure Sensors incorporate Kavlico's 4th generation ceramic capacitive sense element with the latest state of the art ASIC. The P528 series is available with a brass or stainless steel housing and has been specifically designed for high volume OEM refrigeration applications. The P528 sensors can endure the high vibration, broad temperature ranges, and humidity conditions found in refrigeration systems while withstanding high over-pressures and pressure pulsations without damage or degradation. Kavlico's P528 package has a built-in Metri-Pack 150, electrical connector, and supports male and female pressure connections.