Food simulant material for temperature control sensor

摘要

A food simulant material of the type into which temperature sensors can be inserted in a refrigeration system, so that the temperature measured reflects that of food stored in the system, comprises a solid wax in which are distributed gas-filled polymeric particles. The wax is a food-grade wax such as cheese wax and the polymer particles are preferably air-filled polystyrene microcapsules. In use the food stimulant material is preferably in the form of a block confined within a rigid housing 10 through a wall of which a temperature sensor 13a, 13b, 13c can be inserted.