Automatically stay horizontal!
These compact, mechanical velocity meters are designed for measuring water flow in lakes, rivers, canals, estuaries, sewage outfalls and offshore applications. They are ideal for determining water speed, volume or distance.
The meters incorporate a precision-molded rotor coupled directly to a six-digit counter that registers each revolution of the rotor and displays it similar to an odometer (up to 999,999—equal to approximately 14.5 nautical miles). The counter is located within the body of the instrument and is displayed through the clear plastic housing. The meters are properly balanced so they maintain a horizontal position when suspended by a towing line.
After completing each sampling, simply remove the meter and record the reading and time. By subtracting the first reading from the second, the average speed over a given sampling time can be calculated. Each flow meter measures 8 3/8" long, 1 9/16" in diameter and includes 18" of tow line and a stainless steel connecting axle pin. The high-speed meter measures from 10 cm/sec to 7.9 m/sec. The low-speed meter measures from 2 to 100 cm/sec. Ship weight 2 lbs. One-year warranty.