This standard applies to all systems which utilize ionizing radiation for continuous measurement or detection of the level of materials in vessels. The process material may be a liquid or a solid in the form of grains or powder and the output signal may be either continuous or switched. Safety aspects are covered in other IEC and ISO standards.
GSO IEC 60982:2015 history
2015GSO IEC 60982:2015 Level measuring systems utilizing ionizing radiation with continuous or switching output