Combination operation3.3 Gas connectionsQuick Start20 Compact Operating Instructions, 06/2017, A5E31805656-053.3.2 Sample gas restrictors/clamping screwsOverview① For version with pipes:Sample gas bushing with 6 mm connection fittings② Sample gas restrictors③ For version with hoses:Sample gas bushing with 6 mm connection fittingsFigure 3-2 Sample gas connections with sample gas restrictorsFor rack-mounted and wall-mounted devices, the sample gas connections of the analyzermodules are 6 mm nozzles. Clamping screws are mounted onto these nozzles which mustbe connected tightly to the incoming gas lines and outgoing gas lines.