The Honeywell Water Flow Switch WFS6000 is a paddle-type flow switch designed to detect when water flow in a line either exceeds or drops below an adjusted rate. It's a commonly used component in HVAC systems, fire protection systems, water treatment plants, and various industrial applications.
Here's a breakdown of its key features and specifications:
Key Features:
Paddle Type Design: Utilizes a paddle that moves in response to fluid flow, activating a switch.
SPDT (Single Pole Double Throw) Contacts: Allows for wiring to close one circuit and open another when the flow changes.
Rugged Construction: Designed for durability and reliability in demanding environments.
Versatile Application: Suitable for liquid flow lines carrying water or any fluid that is non-hazardous and not harmful to brass and phosphor bronze materials.
Adjustable Flow Rate: The switch can be adjusted to detect specific flow rates.
Outdoor Use: Can be used outdoors, but requires protection from weather or splashing water.
High Temperature and Pressure Tolerance: Capable of withstanding specific operating pressures and temperatures.
Specifications (Typical for WFS6000):
Operating Pressure: Up to 10 kgf/cm² (1000 KPa)
Withstand Pressure: Up to 17.5 kgf/cm² (1750 KPa) - Note: Some sources also state 91750KPa, which seems to be a typo for 1750KPa or 17.5Kgf/cm².
Temperature of Fluid: Max 100°C (212°F). Not for use on lines carrying liquids below 0°C.
Pipe Diameter Compatibility: Typically available for pipe diameters from 1 inch to 6 inches.
Flow Control Range: Varies depending on the pipe size and paddle configuration, but generally ranges from 15 to 1125 LPM (Liters Per Minute).
Electrical Ratings (AC Standard):
Voltage: AC 125 V, AC 250 V
Resistance Load: 5A (AC 125V), 2.5A (AC 250V)
Lamp Load: 44A (AC 125V), 22A (AC 250V)
Motor Load: 5A (AC 125V), 2.5A (AC 250V)
Contact Point Life: 1000K Cycles
Bellows Life: 500K Cycles
Insulation Resistance: Over 100 Ohm, DC500VM
Withstand Voltage: AC1500V/1 minute
Material: Primarily Brass for the body.
Important Considerations:
Safety: Honeywell emphasizes that WFS series flow switches are designed for use only as operating controls. If a control failure could lead to personal injury or property loss, additional safety devices or supervisory systems are required.
Fluid Compatibility: While suitable for water and non-hazardous fluids, it's not designed for use with hazardous atmospheres or liquids below 0°C.
Installation: Final adjustments should be made on-site using a flow meter for optimal accuracy.
