It is used to determine thermosical properties of various refractory materials such as heat-conducting property and heat capacity. It is manufactured according to requirements as specified in Refractory Materials --Â Determination of Thermal Conductivity -- Hot-/span>GB/T 5990) (equivalent to ISO 8894-1 Refractory Materials -- Determination of Thermal Conductivity -- Part 1: Hot-Cross-array and Resistance Thermometer) and ISO 8894-2 Refractory Materials -- Determination of Thermal Conductivity -- Part 2: Hot-arallel)