The Bitoba flowmeter is a double layered hollow manifold tube bent at a right angle, with multiple pressure tapping holes, capable of measuring both total fluid pressure and static pressure simultaneously. Used in conjunction with differential pressure transmitters and flow display devices. It is widely used in the production processes of industries such as petrochemicals, metallurgy, power plants, electricity, and textiles to measure the flow rate of fluids such as gases, liquids, steam, water, and air volume. The working principle is that there is a small hole called the total pressure hole at the head of the pitot tube in the upstream direction, which forms a "stagnation point". There are several static pressure holes perpendicular to the fluid flow direction at a certain distance from the head. The static pressure measured by each static pressure hole is output after being evenly distributed in the pressure equalization chamber. Since the difference between the total pressure and static pressure of the fluid has a certain numerical relationship with the flow velocity of the measured fluid, the fluid flow velocity can be measured using the pitot tube to calculate the size of the measured flow rate. The characteristic pitot tube has the advantages of low pressure loss, low price, small size, easy portability, installation, and measurement. It is suitable for flow measurement of medium and large diameter pipelines, as well as measurement of fluid velocity and velocity distribution at any point in air ducts, water pipes, and mines. Specification parameter 1: Specification: DN50-DN5000 (mm); Insertion type: DN500-DN5000 (mm); 2. Measurement accuracy: ± 6.0%; Repeatability: ± 0.1%; 3. Range: Volume flow rate: 10:1; Quality flow rate: 8:1; 4. Work pressure: Pitot tube without lifting function type: ≤ 20MPa; Adjustable type of averaging tube: ≤ 10MPa; 5. Fluid temperature: ≤ 450 ℃; 6. Medium viscosity: ≤ 30CP (equivalent to heavy oil); 7. Material: Pitot tube, three valve group: various grades of stainless steel (optional); Main pipe and flange: stainless steel or carbon steel (optional);