Averaging Pitot Tube (Annubar)

The Pitot tube produces a Differential pressure (DP) signal proportional to the square of the flow rate in accordance with Bernoulli's theorem. This signal has two components, the high pressure (HP) and the low pressure (LP).

DP= HP-LP

When the fluid impacts the sensor, it creates a high pressure zone, greater than pipe static pressure, in front of the sensor. As the fluid moves past the sensor, it accelerates and a low pressure zone is created to the sides and rear of the senor. Multiple sensing ports are positioned in the high and low pressure zones and an averaged differential pressure is produced. The DP increases proportionally to the square of the velocity of the fluid.

Technical Specification

• Line Size : 150 NB - 750 NB (6" to 30")
• Mounting : Sensor Fitted With Flange and Fixed to Mounting Flange on Pipeline
• Optional Insert : Isolation Valve / Retract Mechanism

Applications

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  Chemical Industry

  • Acid, alkali, corrosive liquids flow measurement
  • Dosing & process control systems
• 

  Pharmaceutical Industry

  • Purified water (PW), WFI systems
  • Clean & hygienic process lines
• 

  Power Plants

  • Cooling water circuits
  • Lubrication oil systems
• 

  Process Industries

  • Flow indication in pipelines
  • Batch & continuous process control
• 

  Water and Wastewater Treatment

  • Raw water / treated water flow monitoring
  • Chemical dosing lines
• 

  Oil and Gas Industry

  • Fuel oil, diesel, lubricants flow measurement
  • Gas flow monitoring in pipelines
• 

  OEM and Machinery

  • Skid-mounted systems
  • Panel-mounted flow indication