The Isco Flow Poke is a complete kit designed for "spot-checking" flows. It includes a manometer attachment to provide an immediate reading. Here's how easy it is to take a flow measurement with Flow Poke.

1. Attach the appropriate insert to the right-angle pole section. Add the necessary number of straight sections, with the manometer/pump assembly attached at the end.

2. Lower the insert into the manhole and position it in the upstream pipe.

3. Use the hand pump to inflate the rubber bladder on the insert, sealing it in place.

4. Note the flow rate reading on the manometer scale.

5. Release pump pressure to deflate the rubber bladder. Remove unit from manhole.

Equipment Provided:

• Four Flow Metering Inserts with attachable 60° V-notch weir plates and 20 ft. (6.1 m) inflation/ bubbler hose.
• Five 2½ ft. (0.76 m) pole sections.
• Detachable hand air pump installed in 2½ ft. (0.76 m) pole section.
• Right angle extension.
• Manometer with four flow rate scales.
• Wooden rest and instruction manual.
  Metering Insert Sizes:
• 6", 8", 10" and 12" (150, 200, 250 and 300 mm)
  Maximum Manhole Depth: 16 ft. (4.9 m) (approximate)

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 Ranges
  • with 6" (150 mm) Flow Metering Insert
    V-notch weir: 1 to 90 GPM (0.063 to 5.7 l/s)
    round orifice: 5 to 180 GPM (0.32 to 11 l/s)
  • with 8" (200 mm) Flow Metering Insert
    V-notch weir: 1 to 160 GPM (0.063 to 10 l/s)
    round orifice: 10 to 320 GPM (0.63 to 20 l/s)
    with 10" (250 mm) Flow Metering Insert
  • V-notch weir: 1 to 230 GPM (0.063 to 15 l/s)
    round orifice: 20 to 480 GPM (1.3 to 30 l/s)
    with 12" (300 mm) Flow Metering Insert
  • V-notch weir: 1 to 320 GPM (0.063 to 20 l/s)
    round orifice: 40 to 640 GPM 2.5 to 40 l/s