• ARO-APT-001 • ARO-APT-HT-002
• ARO-APT-IM-003 • ARO-APT-CM-004
What is Averaging Pitot Tube?
An averaging Pitot tube is a type of flow measurement device used to measure the average flow of a fluid, gases and steam in a duct, stacks or pipe. It is commonly employed in air, fuel, steam and gas flow applications. The averaging pitot tube consists of multiple sensing points across its cross-section, allowing it to provide an average flow measurement rather than a point flow measurement. It offers simple, low cost installation into pipes and ducts, and high energy savings due to its low unrecovered pressure loss.There are no moving parts or sharp edges to wear, so longterm accuracy can be maintained.
Product Data
Arrotop is a leader in providing precision flow measurement solutions, offering a wide range of averaging pitot tubes (annubars) designed to meet the rigorous demands of various industrial applications. Our averaging pitot tubes ensure accurate and reliable flow measurement, featuring robust construction and adherence to international standards.
Arrotop’s averaging pitot tubes provide reliable and accurate flow measurement solutions tailored to meet the demands of various industrial applications. Our range of models ensures that we have the right solution for your specific needs, from standard to high-temperature applications, and compact designs for space-constrained installations.
Types of Averaging Pitot Tubes :
Averaging Pitot Tube – Standard Model
Model Number: ARO-APT-001
Description
The standard averaging pitot tube (APT) provides accurate flow measurement for a variety of applications. It features multiple sensing points across the pipe diameter to average the flow profile, reducing errors due to flow disturbances.
Applications
HVAC systems, water and wastewater treatment, power generation, and process industries.
| Specification | Details |
|---|---|
| Material | Stainless Steel 316, Stainless Steel 304, Monel, Hastelloy, Carbon Steel (special alloys on request) |
| Connection Sizes | 1/2″ NPT, 3/4″ NPT, 1″ NPT |
| Pipe Sizes | 2″ to 120″ (larger sizes on request) |
| Pressure Rating | Up to 6000 PSI |
| Temperature Rating | -50°F to 1000°F (-45°C to 540°C) |
| Accuracy | ±1.0% of reading |
| Standards | ISO 5167, ASME MFC-3M, API 2530 |
| Features | Multi-point averaging, robust construction, low pressure drop |
Averaging Pitot Tube – High Temperature Model
Model Number: ARO-APT-HT-002
Description
Designed for high-temperature applications, this APT model withstands extreme temperatures while maintaining accurate flow measurement.
Applications
Power plants, chemical processing, high-temperature industrial processes.
| Specification | Details |
|---|---|
| Material | Inconel, Hastelloy, Stainless Steel 316 (special alloys on request) |
| Connection Sizes | 1/2″ NPT, 3/4″ NPT, 1″ NPT |
| Pipe Sizes | 2″ to 120″ (larger sizes on request) |
| Pressure Rating | Up to 6000 PSI |
| Temperature Rating | -50°F to 1500°F (-45°C to 815°C) |
| Accuracy | ±1.0% of reading |
| Standards | ISO 5167, ASME MFC-3M, API 2530 |
| Features | High-temperature resistance, multi-point averaging, low pressure drop |
Averaging Pitot Tube – Insertion Model
Model Number: ARO-APT-IM-003
Description
The insertion model averaging pitot tube allows for easy installation and removal without the need to shut down the process, making it ideal for applications requiring minimal downtime.
Applications
Process monitoring, retrofit installations, water and wastewater treatment.
| Specification | Details |
|---|---|
| Material | Stainless Steel 316, Stainless Steel 304, Monel, Hastelloy, Carbon Steel (special alloys on request) |
| Connection Sizes | 1/2″ NPT, 3/4″ NPT, 1″ NPT |
| Pipe Sizes | 2″ to 120″ (larger sizes on request) |
| Pressure Rating | Up to 6000 PSI |
| Temperature Rating | -50°F to 1000°F (-45°C to 540°C) |
| Accuracy | ±1.0% of reading |
| Standards | ISO 5167, ASME MFC-3M, API 2530 |
| Features | Easy installation/removal, multi-point averaging, low pressure drop |
Averaging Pitot Tube – Compact Model
Model Number: ARO-APT-CM-004
Description
The compact model is designed for applications where space is limited, providing the same high accuracy and reliability in a smaller form factor.
Applications
HVAC systems, small process lines, industrial gas measurement.
| Specification | Details |
|---|---|
| Material | Stainless Steel 316, Stainless Steel 304, Monel, Hastelloy, Carbon Steel (special alloys on request) |
| Connection Sizes | 1/2″ NPT, 3/4″ NPT, 1″ NPT |
| Pipe Sizes | 1″ to 24″ (larger sizes on request) |
| Pressure Rating | Up to 6000 PSI |
| Temperature Rating | -50°F to 1000°F (-45°C to 540°C) |
| Accuracy | ±1.0% of reading |
| Standards | ISO 5167, ASME MFC-3M, API 2530 |
| Features | Space-saving design, multi-point averaging, low pressure drop |
Technical Information :
| Parameter | Standard Model | High Temperature Model | Insertion Model | Compact Model |
|---|---|---|---|---|
| Material | SS 316, SS 304, Monel, Hastelloy | Inconel, Hastelloy, SS 316 | SS 316, SS 304, Monel, Hastelloy | SS 316, SS 304, Monel, Hastelloy |
| Connection Sizes | 1/2″ NPT, 3/4″ NPT, 1″ NPT | 1/2″ NPT, 3/4″ NPT, 1″ NPT | 1/2″ NPT, 3/4″ NPT, 1″ NPT | 1/2″ NPT, 3/4″ NPT, 1″ NPT |
| Pipe Sizes | 2″ to 120″ | 2″ to 120″ | 2″ to 120″ | 1″ to 24″ |
| Pressure Rating | Up to 6000 PSI | Up to 6000 PSI | Up to 6000 PSI | Up to 6000 PSI |
| Temperature Rating | -50°F to 1000°F (-45°C to 540°C) | -50°F to 1500°F (-45°C to 815°C) | -50°F to 1000°F (-45°C to 540°C) | -50°F to 1000°F (-45°C to 540°C) |
| Accuracy | ±1.0% of reading | ±1.0% of reading | ±1.0% of reading | ±1.0% of reading |
| Features | Multi-point averaging, robust construction, low pressure drop | High-temperature resistance, multi-point averaging, low pressure drop | Easy installation/removal, multi-point averaging, low pressure drop |
|
Applications of Averaging Pitot Tubes
- HVAC Systems: Averaging Pitot tubes are frequently used in Heating, Ventilation, and Air Conditioning (HVAC) systems to measure and control the airflow in ducts. They help maintain optimal conditions for temperature and air quality within buildings.
- Industrial Ventilation: In industrial settings, where proper ventilation is essential for worker safety and equipment operation, averaging Pitot tubes are employed to measure airflow rates in ducts and ventilation systems.
- Environmental Monitoring: Averaging Pitot tubes are used in environmental monitoring applications to measure the flow of gases in air quality monitoring systems. This is crucial for assessing pollution levels and ensuring compliance with environmental regulations.
- Power Plants: Averaging Pitot tubes play a role in measuring airflow rates in power plant systems, including combustion air, flue gas, and cooling air ducts. Accurate measurements are vital for optimizing energy efficiency and performance.
- Chemical Processing: In chemical plants, where precise control of fluid flow is critical, averaging Pitot tubes are utilized to measure and monitor the flow rates of gases and liquids in pipelines.
- Aerospace Testing: Averaging Pitot tubes are employed in aerospace applications for aerodynamic testing and analysis. They help measure airspeed and flow characteristics around aircraft components, contributing to design and performance evaluations.
- Wind Tunnel Testing: In wind tunnel experiments, averaging Pitot tubes are used to measure the velocity distribution of airflows over models of vehicles, buildings, or other structures. This data is essential for aerodynamic research and development.
- Process Industry: Averaging Pitot tubes are applied in various process industries, such as petrochemical and pharmaceutical plants, to measure and control fluid flows in pipelines. Accurate flow measurements contribute to process efficiency and product quality.
- Environmental Control in Cleanrooms: In cleanroom environments, where maintaining specific air quality standards is critical, averaging Pitot tubes are utilized to measure and control the airflow, ensuring that contaminants are kept within acceptable limits.
- Paper and Pulp Industry: Averaging Pitot tubes are applied in the paper and pulp industry to measure and control the flow of air and other gases in the production process.
Advantages of Averaging Pitot Tubes
- Accurate Average Velocity Measurement: The primary advantage of averaging Pitot tubes is their ability to provide an accurate representation of the average velocity of the fluid across the entire cross-section of a pipe or duct. This is crucial for obtaining reliable flow rate measurements.
- Better Representation of Flow Profile: By incorporating multiple sensing points, averaging Pitot tubes capture the velocity distribution within the flow profile. This results in a more comprehensive understanding of how the fluid velocity varies across the pipe or duct, leading to a more accurate average velocity measurement.
- Suitability for Non-Uniform Flows: In situations where the flow is non-uniform, meaning the velocity varies across the pipe or duct, averaging Pitot tubes are particularly advantageous. They help account for variations in velocity and provide a more representative average.
- Minimized Sensitivity to Localized Flow Disturbances: Averaging Pitot tubes are less sensitive to localized disturbances in the flow compared to single-point measurements. This makes them more robust in real-world applications where factors such as bends, elbows, and irregularities in the pipe can affect flow patterns.
- Wider Range of Applications: Averaging Pitot tubes find applications in various industries, including HVAC systems, industrial ventilation, and environmental monitoring. Their versatility makes them suitable for measuring air and gas flows in different settings.
- Cost-Effective: Compared to some other flow measurement devices, averaging Pitot tubes are often more cost-effective. Their simpler design and construction contribute to lower initial costs and maintenance expenses.
- Ease of Installation: Averaging Pitot tubes are relatively easy to install, especially when compared to more complex flow measurement technologies. This simplifies the setup process and reduces installation time and costs.
- Minimal Pressure Drop: The pressure drop across averaging Pitot tubes is generally minimal. This is important, especially in systems where maintaining the pressure of the fluid is critical.
- Compliance with Industry Standards: Averaging Pitot tubes are designed in accordance with industry standards, ensuring that they meet specific performance and accuracy criteria. This standardization enhances the reliability of measurements across different applications.
- Compatibility with Ducts and Pipes of Various Sizes: Averaging Pitot tubes come in various sizes to accommodate different pipe and duct dimensions. This adaptability makes them suitable for a wide range of flow measurement scenarios.