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  • G3/4 Paddle Wheel Flow Switch for Industrial Systems | 1.5-30L/min | 100-220VDC | N.O/N.C Contact

High-Performance Flow Monitoring for Critical Applications

The ‌G3/4 Paddle Wheel Flow Switch‌ delivers precision flow monitoring for water pumps, heating systems, and industrial fluid control. Engineered to operate across 100-220VDC with 1.5A contact capacity, this sensor ensures reliable performance in automotive, HVAC, and manufacturing environments.


Technical Specifications

  • Flow Range‌: 1.5–30 L/min (±2% accuracy)
  • Voltage‌: 100–220VDC (compatible with universal power supplies)
  • Contact Configuration‌: SPDT (N.O/N.C), 1.5A resistive load
  • Material‌: PP/POM housing, stainless steel paddle wheel (IP65-rated)
  • Temperature Resistance‌: -20°C to +120°C (suitable for high-temperature fluids)
  • Connection‌: G3/4 threaded port, customizable wire length (350mm standard, extended options available)

Design Advantages

  1. Smart Flow Detection

    • Paddle wheel design minimizes pressure drop while maintaining sensitivity to low-flow conditions (1.5L/min threshold).
    • Integrated Hall effect sensor ensures contactless signal transmission, reducing mechanical wear.
  2. Industrial-Grade Durability

    • Corrosion-resistant PP/POM construction withstands chemicals, oils, and high-viscosity fluids.
    • Reinforced shaft bearings extend lifespan in high-vibration environments.
  3. Universal Electrical Integration

    • Wide voltage input (100-220VDC) eliminates need for external transformers.
    • Isolated relay contacts prevent back EMF damage to control systems.

Typical Applications

Industry Use Case
HVAC Boiler protection, chilled water flow monitoring
Automotive Coolant circulation control in EV battery thermal systems
Manufacturing Lubrication line monitoring for CNC machinery
Water Treatment Chemical dosing pump activation

Why Choose This Flow Switch?

  • Plug-and-Play Installation‌: Pre-calibrated for common fluids (water, glycol, light oils).
  • Customization‌: Optional M12 connectors, 24VAC/DC variants, and explosion-proof housing.
  • Compliance‌: CE, RoHS, and UL94-V0 certifications (request test reports for full details).

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