Description
The Dwyer TDFS2-2-P-06 Thermal Flow Switch is a high-quality sensing device engineered to detect the presence or absence of fluid flow in HVAC, hydronic, and industrial piping systems. Utilizing thermal dispersion technology, this switch provides accurate and dependable flow status monitoring without the need for moving parts, resulting in a longer service life and reduced maintenance requirements.
Key Features
- Thermal dispersion sensing technology — no moving parts for enhanced reliability and longevity
- Designed for liquid flow detection in HVAC, hydronic, and process piping applications
- Compact, durable construction suitable for demanding installation environments
- Provides a clear switching signal for flow/no-flow conditions to protect equipment and optimize system performance
- Easy installation into standard pipe fittings
- Ideal for use with pumps, chillers, boilers, and cooling towers to confirm flow before equipment operation
Applications
- Hydronic heating and cooling systems
- Chiller and boiler flow proving
- Pump protection and flow verification
- Industrial process fluid monitoring
- Building automation and HVAC control systems
Why Choose Dwyer?
Dwyer Instruments is a trusted name in flow, pressure, level, and temperature instrumentation. The TDFS2-2-P-06 reflects Dwyer’s commitment to precision engineering and long-term reliability, making it a go-to choice for HVAC professionals and building automation specialists who demand accurate flow sensing without compromise.









