Provide a fast and accurate method of measuring and recording flow in round sewer pipes. The unique design of the inserts allows them to be installed from street level, which elimnatesthe costs and potential hazards of manhole entry. The inserts are designed for use with the Isco 730 and 4230 bubbler flow meters amd are ideal for short or long-term measurement projects. Flow can be accurately measured from 1 to 640 GPM in pipes between 6 inch and 12 inch in diameter and in manholes up to 16 feet deep.
Manufactured by: Teledyne ISCO
Model: Flow Metering Inserts
Suitable for ISCO 4200 and 2100 series flow meters
Flow Metering Inserts | |
Equipment Provided | One Flow Metering Insert with attachable 60° V-notch weir plate and 20 ft (6.1 m) inflation/bubbler hose; Five 2.5 ft (0.76 m) pole sections; Foot pump for inflation of rubber bladder; Right angle pole |
Metering Insert Sizes | 6, 8, 10 and 12 inches (150, 200, 250 and 300 mm) |
Maximum Manhole Depth (approximate) | 16 ft. (4.9 m) |
Typical accuracy (for pipe slopes of 2 ½ % or less). Maximum error for indicated flow range | |
Below 20 GPM (1.3 l/s) | ±1 GPM (±0.063 l/s) |
20 to 40 GPM (1.3 to 2.5 l/s) | ±2 GPM (±0.13 l/s) |
Above 40 GPM (2.5 l/s) | ±5% of reading |
Flow Rate Range for 6" (150 mm) Flow Metering Insert | |
with V-notch weir | 1 to 90 GPM (0.063 to 5.7 l/s) |
with round orifice | 5 to 180 GPM (0.32 to 11 l/s) |
Flow Rate Range for 8" (200 mm) Flow Metering Insert | |
with V-notch weir | 1 to 160 GPM (0.063 to 10 l/s) |
with round orifice | 10 to 320 GPM (0.63 to 20 l/s) |
Flow Rate Range for 10" (250 mm) Flow Metering Insert | |
with V-notch weir | 1 to 230 GPM (0.063 to 15 l/s) |
with round orifice | 20 to 480 GPM (1.3 to 30 l/s) |
Flow Rate Range for 12" (300 mm) Flow Metering Insert | |
with V-notch weir | 1 to 320 GPM (0.063 to 20 l/s) |
with round orifice | 40 to 640 GPM 2.5 to 40 l/s |