Chemtrol - Model PWFS -Paddle Wheel Safety Flow Switch

• Water Purification/Dispensing Systems
• Chemical Metering Equipment
• Lasers and Welders
• Water Injection Systems
• Semiconductor Processing Equipment
• Chillers and Heat Exchangers

• Wetted Materials Body : Brass, 316 Stainless Steel or Polypropylene (Hydrolytically Stable, Glass Reinforced)
• Rotor Pin : Ceramic
• Rotor : PPS Composite, Black
• Lens : Polysulfone
• O-Ring : Viton® (Alloy Bodies); Buna N (Polypropylene Body)
• Low Flow Adaptor : Glass Reinforced Polypropylene
• Operating Pressure, Maximum : Polypropylene Body : 100 PSIG (6.9 bar) @ 70°F (21°C), 40 PSI (2.8 bar) Max. @ 180°F (82°C).
  Optional SS Face Plate 500 PSI Brass or Stainless Steel Body 200 PSIG (13.8 bar) @ 70°F (21°C), 100 PSI (6.9 bar) Max. @ 212°F (100°C)
• Operating Temperature, Brass or Stainless Steel Body : -20°F to 212°F (-29°C to 100°C). Polypropylene Body -20°F to 180°F (-29°C to 82°C)
• Electronics : 150°F (65°C) Ambient
• Viscosity, Maximum : 200 SSU
• Input Power : 4.5 VDC to 24 VDC
• Output Signal : 4.5 VDC to 24 VDC Pulse. (Sourcing)
  Pulse Rate Dependent on Flow Rate, Port Size and Range.
• Current Consumption : 8 mA, No Load
• Current Source Output, Max. : 70 mA
• Frequency Output Range : 15 Hz (Low Flow) to 225 Hz (High Flow)
  Accuracy See Table Below
• Electrical Termination : 22 AWG PVC-Jacketed, 24? Cable. Color Coded:
  Red = +VDC; Black = Ground; White = Signal Output

Notes: For higher pressure/temperature ratings, stainless face plates are available upon request.

Polypropylene Bodies

• Materials: polypropylene
• Maximum Pressure: 100 PSI
• Temperature:  -21°C – 82°C