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Airflow Grid
Airflow Grid

Installation

  • The airflow-monitoring grid should be located at a minimum of 18" after and before any source of turbulence such as a motor, an elbow, a change of diameter, etc.
  • For a greater accuracy, the distance should be increased.
  • These airflow-monitoring grids should only be used on round rigid duct.
  • A one-inch hole should be drilled where the grid is going to be installed.
  • Two sheet metal screws should be used to hold the grid in place.
  • Two 3/16 inch inside diameter hoses should be used to connect the grid to the pressure differential gauge.
  • A chart is provided on each grid for converting inches of water to cubic feet per minute (CFM) and liters per second (L/S).
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