The Dwyer Instruments RSF123 is a precision variable-area flowmeter designed for reliable flow measurement in industrial applications. Featuring a unique rotatable scale with dual air-water direct reading graduations, this flowmeter provides accurate readings in SCFM and SLPM for air, and GPM and LPM for water. The borosilicate glass flowtube is protected by a rotating polycarbonate shield, which also serves as the scale, reducing eye fatigue and enhancing readability.
Key Features & Highlights:
- Dual air/water scales: SCFM/SLPM and GPM/LPM for versatile use
- Rotatable polycarbonate tube shield protects glass flowtube and allows easy scale adjustment
- 1.5x magnification lens and reflective background for accurate, fatigue-free readings
- Blow-out back panel provides safety in case of tube breakage
- Available in vertical in-line or panel mounting configurations
- Shipped fully assembled with standard mounting hardware for quick installation
- Maximum flow rate: 15 SCFM (425 SLPM) air, 3 GPM (11.5 LPM) water
Applications:
Ideal for monitoring and controlling flow in water treatment, chemical processing, HVAC systems, and general industrial automation. The RSF123 is suitable for applications requiring accurate flow indication and easy readability.





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