Description
The Dwyer 530 is a reliable, field-adjustable air flow switch engineered for horizontal duct applications where accurate airflow detection and system protection are essential. Featuring a durable stainless steel vane and a single-pole double-throw (SPDT) switching action, this unit delivers dependable performance in a wide range of commercial and industrial HVAC systems.
Key Features
- Adjustable airflow setpoint range: 400–1600 FPM (feet per minute)
- Stainless steel vane construction for corrosion resistance and long service life
- SPDT (Single-Pole Double-Throw) switch for versatile control wiring configurations
- 180°F (82°C) maximum temperature limit — suitable for standard duct environments
- Designed for horizontal duct flow installation
- Compact, straightforward design simplifies installation and field adjustment
Applications
- Proving airflow in air handling units (AHUs) and fan coil systems
- Fan operation verification and interlock control
- Filter status monitoring and dirty-filter alarms
- Duct pressure and flow safety interlocks in commercial HVAC systems
Why Choose the Dwyer 530?
The Dwyer 530 Air Flow Switch combines rugged stainless steel construction with a broad, field-adjustable sensing range, making it a go-to solution for HVAC contractors and building automation professionals. The SPDT output provides flexibility for both normally open and normally closed control circuits, while the 180°F temperature rating ensures compatibility with standard supply and return duct applications. Easy to install in horizontal duct runs, the 530 minimizes commissioning time and delivers long-term reliability.
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