Flow Measurement:

Transparent liquids|Water

Product Datasheet

Turbo-FloTM probes offer the precision of turbine technology with rugged construction. The practical design of the probe includes a bluff bar which protects the turbine from foreign materials in the stream as well as from over insertion. Installation is simple and does not require special fittings. The Turbo-FlTM probe may be installed in standard pipe tees, through pipe saddles, welding spuds and 1 1/2” full opening ball or gate valves.

  • 303/304 stainless steel housing construction.
  • Probe lengths from 6 to 54 inches for use in pipe sizes as large as 72 inches in diameter.
  • Maximum operating pressure of 400 psig.
  • Adjustable insertion length for your pipe size.
  • Rugged construction for industrial environments.
  • No external power required.
  • Wide measuring range with 30:1 turndown.
  • Low mass Delrin® turbines offer improved sensitivity and long life.
  • Use standard pipe fittings for installation.

The turbine is positioned in the mid-section of the pipe with its axis of rotation parallel with the flow stream. Fluid velocity causes the turbine, which has a ring magnet inside of its hub, to rotate in proportion to flow rate. As the turbine rotates, the magnetic field passes through a coil in the probe body, generating a pulse output in proportion to the turbine rotation speed. Flow volume is then determined from fluid velocity measurement and pipe diameter information.

Accuracy: ±1.0%

Repeatability: ±0.5%

Linearity: ±0.5%

Turndown: 30:1

Insertion length:

06 = 6 inches
08 = 8 inches
12 = 12 inches
18 = 18 inches
24 = 24 inches
38 = 38 inches
54 = 54 inches


0.5 ft/s or
1.22 x ID2 = GPM

Point Velocity = 2.625 pulses/ft/s

Pulse/gallon correction for uncharted pipe diameters =
ID2 charted pipe; ID2 uncharted pipe  X  Pulse/gallon charted pipe

Materials of Construction:

Probe:  304 stainless steel

Connector: Steel or 303sst

Turbine: Delrin® Polypropylene

O-rings:  Buna-n or Viton®

Temperature Limits:  225°F(107°C)

Pressure Limits:  400 psig (27.6 barg)

ERDCO reserves the right to alter design and/or specifications without notice. Viton® and Delrin® are registered trademarks of E.I. Dupont de Nemours and Co.