METHOD AND DEVICE FOR CHECKING AND CALIBRATING LEVEL GAUGES AND SWITCHES

摘要

Method and device for checking and calibrating level gauges and switches for tanks under pressure, in which the level gauge or switch (4) is fluid isolated from the tank (3) by the closing of valves (11, 12) and the tank otherwise is in normal operational mode. The method involves use of a device comprising a test container (1), at least two pipes (6), which pipes are provided with at least one valve (9, 9') each, and which pipes are mounted on the upper portion (7) and lower portion (8), respectively, of the test container, which is provided with a level indicator (2).