The Dwyer Instruments HFO-23210 is a Series HFO Flow Alarm designed for continuous monitoring and control of flow rates in industrial processes. This flow alarm offers reliable flow measurement with a direct-reading scale for local indication, and it can be configured to open or close a contact for either increasing or decreasing set points, providing versatile alarm control.
Key Features & Highlights
- Continuous Flow Monitoring: Provides real-time flow rate indication and alarm capabilities.
- Field-Adjustable Alarm Set Points: Two 10A SPDT limit switches with adjustable set points for flexible control.
- Direct-Reading Scale: Integral scale allows for easy local flow rate reading.
- Versatile Mounting: Designed to mount in any orientation; no inlet or outlet straight pipe required.
- Rugged Enclosure: Cast aluminum NEMA 4X (IP65) enclosure suitable for outdoor or harsh environments.
- Flow Range: 1-10 GPM (3.8-38 LPM) water with 1/2″ female NPT connections.
Applications
The Series HFO Flow Alarm is ideal for use in water treatment, chemical processing, HVAC systems, and other industrial applications where reliable flow monitoring and alarm control are essential. Its robust construction and flexible mounting options make it suitable for a wide range of installations.





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