YSI EcoSense DO200A Dissolved Oxygen Field Cable related_woltmann-helix-style-water-meter Size: DA 180
Yard notes & kiln story
Description
YSI EcoSense DO200A Dissolved Oxygen Field Cable related_woltmann helix style water meter Size: DA 180 Size: DA 180 Here the "regenerative" principle takes effect as the air is turned back by the annular shaped housing to the base of the following blades where it is again hurled outward