Global Water Flow Probe

Global Water Flow Probe



The Global Water Flow Probe is a highly accurate water velocity instrument for measuring flows in open channels and partially filled pipes. The water velocity probe consists of a protected water turbo prop positive displacement sensor coupled with an expandable probe handle ending in a digital readout display. The water flow meter incorporates true velocity averaging for the most accurate flow measurements. The Flow Probe is ideal for storm water runoff studies, sewer flow measurements, measuring flows in rivers and streams, and monitoring velocity in ditches and canals.

Two models are available:

  • FP111: extends from 112cm (3.7 feet) to 183cm (6 feet) in length.
  • FP211: extends from 167cm (5.5 feet) to 457cm (15 feet) in length.

Both versions are available with an optional swivel head for hard to reach applications such as vertical drainage pipes.

The handle is constructed of anodised aluminum for light weight and long life allowing the user to measure sewer flows from street level and stream flows from low bridges. A 90cm mylar coated staff gauge (graduated in centimetres) is attached to the lower section for instant water depth measurements and accurate propeller positioning.

Turbo-Prop Sensor

The Flow Probe incorporates the unique Turbo-Prop propeller sensor, which uses the most accurate positive displacement technique available for velocity sensing. The Turbo-Prop is designed to shed debris and is protected inside a 50mm (2″) diameter housing. The probe housing may be placed directly on the bottom of a pipe or streambed for measuring low flows down to 50mm (2″) in depth. The flow meter propeller rotates freely on its bearing shaft with no mechanical interconnections for minimal friction. Magnetic material in the propeller tip passes a pickup point in the water velocity meter handle producing electrical impulses that are carried to the readout display by an internal cable. The Turbo-Prop is easily removed for cleaning or replacement.

Digital Readout Display

The Digital Readout Display receives an electrical signal from the propeller, amplifies the signal, and converts the reading to feet per second (or metres per second, depending on programming). The readout displays instantaneous velocity and true average velocity. The readout unit is water-resistant and incorporates a unique two-button operation for changing functions and zeroing the display. An internal watch-type battery powers the unit continuously for one year and is easily replaced. Also available on the readout is maximum velocity, time-of-day, and stopwatch functions.

Features & Benefits

  • Digital display in ft/sec or m/sec.
  • Lightweight, rugged, and reliable.
  • Highly accurate.
  • Used by water professionals worldwide since 1990.
  • Debris shedding turbo-prop.
  • Telescoping handle with staff gauge.
  • Displays instantaneous and true average velocity.
  • Rain-proof digital computer read-out.
  • Padded carrying case for easy storage.

Technical Specifications

Refer to User Manual below