SMC Networks ZSE20B-L Operation Manual page 20

○Tube attachment
●When the pressure switch is used in a place where water and dust splashes may occur, insert a tube in
the atmospheric vent port, and position the other end of the tube at safe position to protect the vent port
from water and dust (see the figure bottom).
∗: The tube should be inserted to the end of the atmospheric vent port.
∗: SMC TU0425 (polyurethane, O.D φ4, I.D φ2.5) is a suitable tubing.
To a safe position to protect from water and dust.
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No.PS※※-OMV0006-D