Arrangement for attaching a tubular gas sampling probe and use of such an arrangement in an air shaft

Abstract

The invention relates to an arrangement for attaching a tubular gas sampling probe (1) with at least one gas sampling inlet opening (2) arranged at the end of the tube to a channel wall defining a gas flow channel, the channel wall having a channel wall opening whose shape and size allow a section of the gas sampling probe (1) having the gas sampling inlet opening (2) to pass through.The arrangement comprises the following components: - the gas sampling probe (1), - a plate-shaped fastening element (13) that can be attached to the channel wall and has an opening which, when attached to the channel wall, completely overlaps the channel wall opening and has an internal thread, - a support tube (9) which has at its tube end a joining contour (11) with an external thread contoured to the internal thread for detachably tight joining to the opening of the plate-shaped fastening element (13), - a fastening element (10) attached to the support tube (9) for detachably fixing the gas sampling probe (1) inside the support tube (9), and - at least one line marking (8) attached to the gas sampling probe (1) as well as to the support tube (9) and / or to the plate-shaped fastening element (13).8'), which indicates at least an orthogonal distance to the channel wall between the gas sampling inlet opening (2) and the channel wall, as well as a relative rotational position between the gas sampling probe (1) and the support tube (9). The invention also relates to the use of this arrangement for air sampling in an air duct of a ventilation system.