Device for calibrating metering arrangement comprises switching unit acting on reference gas line, to which dosing unit is not connected, and/or on dosing gas line feeding dosing gas from dosing unit

摘要

A device for calibrating a metering arrangement comprises a switching unit (3, 3) acting on a reference gas line (10, 10'), to which a dosing unit (2, 2') is not connected, and/or on a dosing gas line (6, 6') feeding dosing gas from the dosing unit so that the reference gas and/or dosing gas is continuously fed to an inlet of a sensor unit (4) with a flow deviation below a prescribed threshold value.