What is a Pitot Tube Flow Meter? A Pitot Tube Flow Meter is a dynamic pressure flow sensor that uses the Pitot tube principle to obtain the fluid velocity at the center of the pipe (total pressure – static pressure = dynamic pressure) and then converts it into fluid volumetric flow rate or mass flow rate.
A Pitot Tube Flow Transmitter is an advanced instrument designed and manufactured using the Pitot tube principle, based on the international standard ISO 3966 “Measurement of flow rate of fluids in closed pipes – Velocity-area method using Pitot tube static pressure tubes,” and relying on advanced wind tunnel testing technology. It is widely applicable to the measurement and online comparison of flow rates for liquids, steam, and gases.
| Diameter | DN8～DN8000 |
| Accuracy | ±1.0% |
| Temp. range | – 100 ° C ~ 450 ° C |
| Pressure | 0 ~ 20Mpa |
| Medium | air, gas, flue gas, natural gas, tap water, boiler feed water, containing rot solution; saturated steam, superheated steam, etc |
| Size Range | DN50 – DN5000 (insertion type: DN500 – DN5000) |
| Accuracy | ±6.0%; Repeatability: ±0.1% |
| Rangeability | Volume flow: 10:1; Mass flow: 8:1 |
| Working Pressure | Non-removable type: ≤ 20 MPa; Removable type: ≤ 10 MPa |
| Fluid Temperature | ≤ 450°C |
| Medium Viscosity | ≤ 30 cP (equivalent to heavy oil) |
| Probe Material | Various grades of stainless steel (user’s choice) |
| Body Tube & Flange | Stainless steel or carbon steel (user’s choice) |
In addition to regular products, we support customization
| Mounting | M = Threaded; F = Flanged |
| Body Material | 1 = Carbon steel; 2 = Stainless steel; 3 = High-temperature alloy |
| Pipe Size | DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN225, DN250, DN300, DN350, DN400, DN450, DN500, DN600, DN800, DN900, DN1000 |
| Working Pressure | 1 = 0.6 MPa; 2 = 1.6 MPa; 3 = 2.5 MPa; 4 = 4.0 MPa; 5 = 6.4 MPa; 6 = 10.0 MPa; 7=Customize |
| Working Temperature | 1 = Below 120°C; 2 = Below 220°C; 3 = Below 380°C |
| Medium Type | LC = Clean liquid; GC = Clean gas; LT = Dirty liquid; GT = Dirty gas; VM = Saturated steam; VH = Superheated steam |
| Accessories | 00 = No accessories; 01 = DP transmitter only; 10 = Flow totalizer only; 11 = DP transmitter + flow totalizer |
Provide the following when ordering:
The pitot tube sensor has a small total pressure port at its tip, facing into the flow, where a stagnation point forms. At a set distance from the tip, several static pressure ports are oriented perpendicular to the flow direction. These static pressures are averaged in an internal equalization chamber before output.
The difference between total pressure and static pressure has a defined numerical relationship with flow velocity. By measuring this differential pressure with a DP transmitter, the flow velocity is determined and the volumetric or mass flow rate is then calculated.
The Pitot Tube Flow Meter fundamentally solves the problems of anti-clogging and wear resistance in primary and secondary air velocity (volume); it addresses issues such as high pressure loss, high temperature resistance, and high pressure in main steam metering; it resolves the problem of easy clogging in coke oven gas, tar, and crude oil; and it solves flow measurement problems in special applications with large pipe diameters, low flow velocities, and insufficient straight pipe sections.
Differential pressure flow meters can be used to obtain measurement solutions for many special operating conditions. Feel free to contact Sino-Inst’s sales and engineering departments for customization!
Zhang Wei, possesses 20 years of experience as an automation instrumentation engineer, specializing in the research, design, installation, commissioning, and maintenance of automation instruments.
Face to various instrument communication protocols (such as Modbus, Profibus, etc.), with solid hardware circuit design and software programming skills (proficient in C language and PLC programming). Has extensive project experience; projects he has led and participated in have all achieved outstanding results, improving product accuracy, reducing costs, and increasing production efficiency.
Possesses excellent communication and coordination skills and a strong team spirit, enabling him to quickly respond to customer needs and provide high-quality automation instrumentation solutions.
