Sand Catchers: BSNE - COX

BSNE - Supplier: Dr. W. Fryrear, Big Spring, TX

  BSNE Technical

Currently manufactured by Custom Products (Dr. W. Fryrear - formerly head of the USDA Wind Erosion Field Laboratory, Big Spring, TX).

Processing data from the Sensit eroding mass sensor requires the coincident use of a sand catcher as a total mass reference.

This catcher was designed for efficiency and verified by wind tunnel testing. The catcher is pointed  into the wind by the rear vane. The wedge shaped sand capturing container creates a vacuum at the back of the container where a fine screen allows air to pass but traps particles. The wedge is designed such that the vacuum at the back exactly compensates for for any pressure buildup at the entrance opening at the front. This causes air (with particles) to enter the catcher as if it were not there. The particles are trapped inside the cavity while the air passes out through the screen at the back.

COX Sand Catcher

Cox Technical

Made by Bill Cox of the Great Basin Air Pollution Control District (GBAPCD), Bishop, CA for their own use.

This is a simply made omni-directional catcher made by GBAPCD for their massive erosion monitoring project at Owens' Dry Lake, Keeler, CA.  As far as we know it is not made for commercial sales but Mr. Cox encourages others to make these catcher for their own use.

The design demonstrates an economical yet effective catcher that has no moving parts.