| 摘要 |
The probe tube is divided into at least two divisions via at least one separating wall running longitudinally. At least two of the divisions are connected to an indicator. One of the divisions communicates with the atmosphere around the tube via at least one hole aperture and the other division communicates with the atmosphere around the tube via a longitudinal slot opening. The probe tube is orientated across the channel longitudinal direction with the hole apertures directed towards the channel wall. The probe tube has a cylindrical cross-section and one side of the slot opening comprises a part of the cylinder wall bent tangentially outwards from the longitudinal axis. The probe tube is produced from an injection-moulded aluminium profile. The aluminium profile tube on the inside has at least two longitudinal tracks which make possible the final fixture of the profile tube by means of screw components. |
