Pt 1000 product temperature sensor. The sensor is developed for temperature monitoring and data logging in HACCP system. It has been designed to simulate a product placed in a refrigeration application. Hereby a realistic HACCP report is achieved. Together with an ADAP-KOOL® appliance control the HACCP tolerance requirement of ±1 K in the whole area is complied with in the whole range of -30 – 15 °C.