ISO 4112:1990

The principle is based on placing a series of thermometric probes consisting of a rigid tube or flexible cable with one or more temperature-sensing devices throughout the mass of stored grain to detect or monitor changes in temperature. In larger stores, an automated temperature control may be used, the various measuring values being printed on paper. This second edition cancels and replaces the first edition ISO 4112:1979, of which the scope has been expanded to include all bulk stores.