The OCIO is an innovative system for monitoring the fluid level inside atmospheric tanks. The system detects the static (hydrostatic) pressure generated by the fluid height by means of a tube inserted in the tank and displays the fluid level or volume in litres. Includes 10m of capillary tubeing and probe/weight. 230V and 110V versions available. 4m max fluid height. Acc +/- 1%. Includes contacts for minimum or maximum levels for connection of control systems/alarms.