Volumetric Weirs

Advantages

• Portable
• Accurate in low flows
• Measures from 57 to 3,700 gallons per 24 hours
• Use in new or existing sewer lines
• Equipped with top mounted bubble level
• Multiple sizes

Installation

Prior to installation, the interior edge of the incoming pipe should be cleared of sediment and foreign matter to assure seal of the gasket.

Turn thumb-wheel to extreme right. Place hand through weir opening, with thumb and index finger compress spring. Insert weir into incoming pipe about 1", and release tension from spring. Secure by turning thumb-wheel to left and finger tighten.

Allow sufficient time for water to back up and behind the weir and establish a uniform flow; five to ten minutes for existing flow to an hour for accurate infiltration readings.