Dwyer Air Flow Sensors for Ventilation Systems

Posted on: 19/05/2025

In modern HVAC systems, controlling air flow is essential to ensure performance efficiency, indoor air quality, and energy savings.

That’s why most ventilation systems today are equipped with air flow sensors.

Dwyer Instruments, a leading brand from the USA, offers a wide range of highly accurate and durable air flow sensors that are easy to integrate into various control systems. Let’s explore these solutions with DLK, the official distributor of Dwyer products in Vietnam.

1. Why Air Flow Sensors Are Important in Ventilation Systems

Air flow sensors are used to measure the amount of air passing through air ducts or equipment like AHUs and FCUs, in order to:

Accurately adjust supply and return air volumes
Control pressure and prevent energy loss
Monitor fan and air distribution performance
Ensure compliance with indoor air quality (IAQ) standards

They are especially crucial in environments like hospitals, cleanrooms, data centers, and smart buildings.

2. What Makes Dwyer Air Flow Sensors Stand Out?

Dwyer offers various models of air flow sensors to suit different HVAC needs. Key features include:

High accuracy with low error margin (±2% or better)
Output options: 4-20mA, 0-10V, Modbus RTU
Easy installation and compatibility with standard 24VDC power
Suitable for both HVAC and light industrial environments

3. Popular Dwyer Air Flow Sensor Models

✅ Dwyer Series TDFS2 – Thermal Dispersion Flow Switch

Uses thermal dispersion technology
Built-in alarm for low flow detection
Ideal for duct protection, ventilation fans, and cleanrooms

✅ Dwyer Series STA – Air Flow Transmitter

Measures linear airflow across a wide range
4-20mA analog output for BMS integration
Durable design, suitable for both round and rectangular ducts

✅ Dwyer Series AAFS – Duct Air Flow Switch

Basic airflow switch for ON/OFF detection
Commonly used to check whether airflow is active
Cost-effective and easy to install

4. Real-World Applications of Dwyer Air Flow Sensors

Type of Project	Sensor Application	Suitable Equipment
Office, Commercial Centers	HVAC airflow regulation	STA, TDF52
Hospitals, Clean Rooms	Pressure warning, pressure monitoring	TDF52, AAFS
Manufacturing Plants	Check operation of fans, ventilation systems	AAFS
Large HVAC Systems	Integrate airflow measurement into BMS	STA, TDF52

5. Where to Buy Dwyer Air Flow Sensors in Vietnam?

DLK – Official Distributor of Dwyer Sensors in Vietnam

Technical consultation to choose the right model
Full CO-CQ certification, fast nationwide delivery
Integration support with BMS and on-site guidance
Competitive prices for projects, contractors, and dealers

👉 Learn more at: https://dlk.com.vn

Conclusion

Air flow sensors play a critical role in optimizing ventilation systems for modern buildings. With Dwyer’s globally trusted technology, you can rely on precision, stability, and smooth system integration.

📞 Contact DLK today for expert advice, price quotes, and the best-fit sensor for your project!