Pitot tube

A Pitot Tube measures flow by sensing the difference between the impact pressure of the flow and the static pressure. Unlike a conventional single-point pitot tube (which has the limitation of being a point-velocity device), the SEIKO pitot tube has multiple impact-sensing ports across the pipe diameter and produces an averaged differential pressure signal proportional to the flow rate.

The averaging Pitot Tube is a versatile and cost-effective solution to difficult metering problems. It is type calibrated so that no further calibration is necessary once the meter is installed, SEIKO calculates the resonant frequency band, ensuring that the device is suitable for the purpose - a service that few companies provide.

The outer impact tube has a number of pressure sensing holes facing upstream that are positioned at equal annular points in accordance with a log-linear distribution. The "total pressures" developed at each upstream hole by the impact of the flowing medium are averaged in two stages: firstly, within the outer impact tube and secondly (and more accurately) within the internal averaging tube. This pressure is represented at the head as the high pressure component of the DP output.

Tappings:  1/2" inch NPT female pipe taps or flanges (to ASME B16.5) or Chemical Tee, dependent on application requirements.

Available in Carbon Steel (SA105/SA350LF2) or Stainless Steel (SS316).

The typical uncertainty of uncalibrated Pitot Tube is +/- 5%.

Permanent pressure loss is typically 5% - 12 % of the differential pressure (depends on the Beta-Ratio).

We use cookies to provide you with our website. By clicking on 'Accept', you agree to allow the use of cookies on our website. Accept