Presense AFS-P2 Float Switch

Presense AFS-P2 Float Switch

The Presense AFS-P2 Float Switch is a compact, high-precision inline PVC paddle wheel flow switch engineered for reliable flow detection in a wide range of water circulation systems. It utilizes a mechanical paddle mechanism that activates a reed switch when flow moves the paddle by 20° ± 2°, delivering a dependable ON/OFF control signal to automation systems.

Built with durable nylon and PVC materials, the AFS-P2 provides excellent mechanical strength, insulation resistance, and temperature tolerance up to 85 °C. Its NPT 1/2″ threaded connection and silicone sealing simplify installation while ensuring leak-free operation in both industrial and commercial environments.

The switch’s electrical reliability (rated at 10 W, 100 V max) supports integration with DC 5–24 V control circuits, making it ideal for system protection, safety interlocks, and process monitoring. With its robust construction and precision sensing, the Presense AFS-P2 guarantees consistent performance in HVAC systems, swimming pool chlorinators, and industrial process water lines.

As part of the Dubai Sensor product range, this model is trusted across the UAE and MENA region for maintaining reliable automation and water system control.

Key Features & Benefits

• Compact inline PVC paddle wheel design for space-efficient installation
  
  
• Accurate mechanical detection with 20° ± 2° paddle activation angle
  
  
• NPT 1/2″ threaded connection with durable silicone sealing
  
  
• Compatible with DC 5–24 V control and monitoring systems
  
  
• Long service life reed switch (10 W) ensuring stable output
  
  
• High insulation resistance (≥ 100 MΩ) and electrical durability
  
  
• Designed for pipes with 40–60 mm inner diameter
  
  
• Temperature resistance up to 85 °C for demanding environments
  
  
• Ideal for automation, pump protection, and process safety
  
  

Technical Specifications – Presense AFS-P2 Float Switch

Standards & Certifications

• Built in compliance with industrial electrical insulation and safety standards
  
  
• Designed for reliable operation in HVAC, cooling, and water control systems
  
  
• Components conform to manufacturing quality and material safety requirements
  
  

Applications & Industries

• Swimming pool salt chlorinators – flow assurance for chlorination safety
  
  
• HVAC and cooling systems – water flow monitoring and system protection
  
  
• Industrial process water monitoring – precise control in automated plants
  
  
• Fire sprinkler systems – ensuring activation under proper flow conditions
  
  
• General pump protection and water circulation in commercial setups
  
  

Widely used in industrial facilities and utility systems across the UAE and MENA region.

Installation, Commissioning & Maintenance

• Install horizontally in the pipe and align the paddle with the flow direction
  
  
• Ensure the paddle is fully submerged for accurate detection
  
  
• Avoid mounting in zones with turbulence or reverse flow
  
  
• The switch closes at a paddle angle of 20° ± 2°
  
  
• Periodically inspect for debris buildup to maintain sensitivity and performance
  
  
• Compatible with standard RJ11-6P2C connectors and UL2464 wiring
  
  

Why Choose Presense AFS-P2 Float Switch

The Presense AFS-P2 stands out for its mechanical precision, durable construction, and ease of integration. Its non-electronic paddle design minimizes maintenance while providing dependable switching for years of service.

Dubai Sensor supplies this model as part of its trusted range of flow detection solutions, offering engineers and system integrators in the UAE and MENA access to high-quality components that ensure reliability, safety, and efficiency in water and HVAC control systems.

Ordering Guide

Ordering Notes:

1. Verify pipe inner diameter before installation.
   
   
2. Confirm correct flow direction and horizontal alignment.
   
   
3. Ensure full paddle immersion for optimal accuracy.
   
   
4. For official sourcing and technical assistance, contact Dubai Sensor, the authorized distributor of Presense instruments.
   
   

FAQ – Presense AFS-P2 Float Switch

Q1: What is the Presense AFS-P2 Float Switch used for?
The AFS-P2 is used to detect and monitor water flow in systems such as swimming pool chlorinators, HVAC and cooling systems, industrial process water lines, and fire sprinkler systems.

Q2: How does the AFS-P2 detect flow?
It uses a mechanical paddle that moves with the flow of water. When the paddle reaches an angle of 20° ± 2°, it activates an internal reed switch, generating an ON/OFF signal for the control circuit.

Q3: What pipe sizes are compatible with this flow switch?
The AFS-P2 is suitable for pipes with internal diameters between 40 and 60 mm.

Q4: What is the electrical rating of the reed switch?
The built-in reed switch is Normally Open (NO) and rated at 10 W, with a maximum switching voltage of 100 V and maximum current of 0.5 A.

Q5: What is the maximum operating temperature?
The flow switch operates reliably within a temperature range of −10 °C to +85 °C.

Q6: How should the AFS-P2 be installed for best performance?
Install the unit horizontally, aligned with the flow direction, ensuring the paddle is fully submerged. Avoid areas with high turbulence or reverse flow.

Q7: What is the connection type and wiring configuration?
The AFS-P2 uses an RJ11-6P2C connector with a UL2464 26 AWG cable, and comes with a 5-meter wire length for flexible installation.

Q8: Does the AFS-P2 require external power?
Yes. It is compatible with DC 5–24 V control circuits.

Q9: Can the AFS-P2 be used in industrial systems?
Absolutely. Its durable nylon/PVC construction, high insulation resistance, and precise switching make it ideal for industrial water monitoring and automation systems.

Q10: Where can I purchase the Presense AFS-P2 Float Switch?
The AFS-P2 is available through Dubai Sensor, the authorized distributor of Presense instruments in the UAE and MENA region.