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PITOT TUBES TYPE L Diameter 6 mm, length 800 mm

Elma Instruments
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There are several methods for determining the amount of air velocity or air flow in a ventilation duct. One of the methods is the measurement with a pitotube. Rule for pitot dimensioning, The diameter of the pitot tube should not exceed 1/30 of the diameter of the channel. The length should correspond at least to the channel diameter. Together with a microanemometer or other sensitive pressure gauge device, the pitot tube is particularly suitable for measuring the speed of, for example, ventilation ducts. The pitot tube measures the difference between the total pressure and the static pressure. This pressure difference is used to calculate the air velocity at the current measurement point. Upon entering the channel dimension, the air velocity can be converted to a flow. All pitot tubes are made of stainless steel, corresponding to the AFNOR NFX 10-112 standard. All sizes of pitot can be delivered as a centimeter scale as a special item. At www.elma.dk there are a wide range of accessories for pitot tubes, such as bushes and holders, and pitot tube with built-in type K sensor.