Model 166T Telescoping Stainless Steel Pitot Tube

Part Number: 166T Brand: Dwyer Instruments, LLC
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The Model 166T Telescoping Pitot Tube is a unique air flow sensor which can quickly and easily be adjusted for any duct insertion length from 11.5 to 36 inches (29.2 to 91.4 cm).

Now, this single compact unit can replace up to five conventional fixed length Pitot tubes. For even greater convenience, it is securely protected by a custom fitted polyethylene carrying case.

Telescoping sections lock in place as they are extended, enabling use of the handle grip to gage proper alignment of the tip within the airstream. Stainless steel construction resists corrosion.

Hemispherical tip has 1.0 flow coefficient, is 1/8" dia. (3.2 mm). Largest section is 3/8" (9.5 mm). Weight (with case) 1 lb, 9 oz (709 g). Case: 12.5 x 6.25 x 1.75 in.
  • Adjustable length can replace up to 5 fixed length Pitot tubes
  • Stainless steel construction resists corrosion
  • 1.8" diameter hemispherical tip has 1.0 flow coefficient



  • Differential Pressure Gage
  • Monitor or Control Air Velocity or Air Flow
  • Pressure Transmitter

Enclosure, Body Material

  • Stainless Steel

Flow Capacity

  • 1.0 Cv

Insertion 'U' Length

  • 11.5” to 36” (29.2 to 91.4 cm)


  • 1.8” Diameter Hemispherical Tip

  • Monitor or control air velocity or air flow when combined with differential pressure gage, switch, or transmitter where varying lengths are needed

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