Specifies the essential requirements and verification procedures for float-type level gauges to be used for ship and shore tanks containing refrigerated light-hydrocarbon fluids. Includes the following headings: gauge materials and construction; general requirements for measurement of liquid level; instrumentation requirements for gas-dangerous spaces; calibration and verification; environmental conditions and allowable power supply fluctuations. Also includes detailed definitions, tables and diagrams.

BS ISO 18132-1 : 2011

BS ISO 18132-2 : 2008