Air Velocity Sensor
The Air Velocity Sensor uses the Bernoulli equation and Pitot tube principle to convert pressure into wind speed and air volume output. The host equipped with a standard Pitot tube can measure the flow rate and velocity, as well as temperature and pressure of the air duct.
Product Overview
Air flow velocity sensor
This Air flow sensor requires very little air volume, and its performance is stable and reliable even in harsh environments. Compared with other traditional wind speed sensors, it can achieve better stability and ensure faster and accurate micro-air volume measurement and accuracy; The shell is made of high temperature resistant and anti-corrosion material, with no zero point drift and excellent long-term stability, making it more cost-effective. In addition, this series of transmitters can withstand transient high wind speeds and high wind pressures.
High Accuracy
Precise measurements with minimal drift over time
Wide Operating Range
Performs reliably in extreme temperature conditions
Fast Response
Rapid detection of air velocity changes
Durable Construction
Robust design for long service life
Technical Specifications
Air Velocity Sensor HVAC
| Measuring Range | 0-10 m/s, 0-20 m/s, 0-30 m/s, 0-40 m/s, 0-70 m/s |
| Maximum Overload | 5 times the standard range |
| Output | Air velocity, air volume |
| Accuracy | 3% F·s |
| Display Resolution | 0.01 |
| Power Supply | 24 VDC |
| Load Resistance | ≤500 Ω |
| Long-Term Stability | ±1% F·s/year |
| Relative Humidity | 0-95% |
| Compensated Temperature | 0-70°C |
| Protection Rating | IP54 |
| Operating Temperature | -40-800°C (For flanges over 400 degrees, the pressure lead pipe at the rear end is lengthened by 10cm.) |
Applications
General HVAC System
By monitoring airflow rates, Air Velocity Sensor HVAC enable facility managers to adjust system operations to prevent overuse and minimize energy waste. This ensures that air is distributed efficiently throughout a building, enhancing occupant comfort and overall system efficiency.
Chemical Production
In chemical production, monitoring the velocity and volume of high-temperature, corrosive gases is crucial for ensuring the proper operation of equipment such as reactors and heat exchangers. The Air Volume Sensor is designed to withstand high temperatures, and its stainless steel pitot tube offers excellent corrosion resistance.
Variable Air Volume Systems
In VAV systems, which control temperature by varying the amount of conditioned air supplied to a space, Duct air velocity sensor is essential. They measure the airflow into each zone, allowing the system to adjust the dampers and deliver the precise amount of heating or cooling needed.
Industrial Emissions Monitoring
In industrial settings, these sensors are used to monitor and control airflow for processes that require specific environmental conditions, such as managing pollutants.
The Industrial air velocity sensor can help monitor the flue gas emission rate of industrial emissions to ensure compliance with environmental protection standards.
Combustion Monitoring
Flue gas treatment systems typically include multiple steps, including denitrification, dust removal, and desulfurization. The operating efficiency of each step is closely related to the flue gas flow rate. For example, in a denitrification system, High Temperature Air Velocity Sensor monitor and control the flow rate to ensure optimal denitrification conditions.
Tunnel Ventilation Monitoring
In tunnel and subway projects, the proper functioning of ventilation systems is crucial to passenger safety. The Differential pressure sensor monitors ventilation system status and identifies potential safety hazards.
FAQ
What is an air velocity sensor?
Air velocity sensors are ideal for providing real-time feedback in air cooled systems when flow verification is key to maintaining a stable and reliable operation. With an air velocity sensor, hardware issues like fan failures can be quickly identified before critical electronic components overheat.
How does air velocity work?
This tells us that air velocity may be determined by differences in pressure or temperature. Molecules move from spaces of high pressure and high temperature towards spaces of lower temperature and lower pressure. The greater the difference in pressure or temperature, the higher the air velocity.
How does an air sensor work?
A hot wire air flow sensor is a more common type of air flow sensor typically used in engines that works by measuring the change in resistance of a hot wire. A thin wire is heated at a constant temperature and placed in the path of air flow which cools it down in a manner that is proportional to the rate of air flow.
What is the difference between air flow and air velocity?
Flow is a measure of air output in terms of volume per unit of time. The common units are litres per minute, cubic feet per minute (CFM), etc. Velocity refers to how fast the air is moving in distance per unit of time. The common units are feet per second, metres per second, etc.
Why is it important in an HVAC system?
By providing real-time airflow data, these air velocity sensors help maintain proper ventilation, ensure balanced air distribution, and optimize energy consumption.
How often should air velocity sensors be calibrated?
We recommend calibration every 12-24 months under normal operating conditions. In harsh environments with high levels of dust, humidity, or temperature extremes, more frequent calibration (every 6-12 months) may be necessary to maintain accuracy.
How should air velocity sensors be installed for accurate measurements?
Sensors should be installed in a location with undisturbed airflow, away from obstructions, bends, or turbulence. For duct measurements, the sensor should be placed at least 5-10 duct diameters downstream from any elbows, dampers, or other flow-disturbing elements.
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