Pitot tube is an accessory that allows to perform measurement of the flow velocity of the gas stream. The measurement is performed indirectly – Pitot tube is connected to analyser’s differential pressure sensor. Analyser recalculates the differential pressure on the Pitot tube’s outlets to velocity.
Features
- Helps to perform measurement of the gas stream flow velocity - indirectly, by providing to the analyser the values of static and total pressures in the duct, that are recalculated to velocity by the analyser’s firmware.
- Made of stainless steel 316L
- Working temperature up to 600°C
- Two different lengths available: 500mm and 800mm
- Equipped with 2m silicone hoses to connect with all types of madur analysers (to connect with analyser’s differential pressure fittings)
- For the stationary measurements, Pitot tube can be equipped with the ANSI flange 4" holder (optional equipment)
Tech specs
General parameters
| Dimensions: nominal length | outer diameter | 500mm or 800mm | 6mm |
| Coefficient K | 1.0015 ± 0.01 |
| Tube material | Stainless steel 316L |
| Operating temperature range | 0 ÷ 600°C |
| Accuracy | Better than 1%, for a ±10° alignment to the gas stream |
| Connecting hoses: material | ID | OD | length | silicone rubber | 4mm | 8mm | 2000mm |
| Adapter for 3mm fittings: material | ID | OD | length | stainless steel / silicone rubber | 3mm | 7mm | 80mm |
Chimney adapter
| Dimensions | Φ228mm x 54mm |
| Weight | 1.55kg |
| Flange | ANSI 4" or metric DN100 (EN1092) |
| Mounting holes | 4 holes for ANSI 4” (placed on 7.5” circle) and 4 holes for DN100 (placed on 170mm circle) |
Velocity calculation formula
Formula used for calculation of linear velocity of the gas stream based on the dynamic pressure measured with Pitot tube:
Where:
K - coefficient characteristic to a particular Pitot tube type
T - absolute gas temperature in the channel in [K]
PDYN - dynamic pressure measured with Pitot tube in [Pa]
P0 - atmospheric pressure (absolute) prevailing in the gas channel [Pa]
Where:
K - coefficient characteristic to a particular Pitot tube type
T - absolute gas temperature in the channel in [K]
PDYN - dynamic pressure measured with Pitot tube in [Pa]
P0 - atmospheric pressure (absolute) prevailing in the gas channel [Pa]
Drawing
Drawing #1
Pitot tube dimensions
Drawing #2
Pitot tube connecting hoses
Drawing #3
Hose adapter for ø3mm fittings
Drawing #4
Pitot tube chimney adapter, fits ANSI 4” flange or EN1092 100mm flange
