OMEGA FSW800B-Series Compact Fan and Filter Fan Air Flow Switch

Description of OMEGA FSW800B

The FSW800B Series air-flow monitor provides a simple but reliable alternative to indicate positive or negative air flow of fans. When properly installed and connected in series with an optical (i.e. LED) or audible signaling device, a bi-directional switch will activate an electrical contact if the air flow of the fan falls below 8.2 ft/s, thus either turning the signaling device on or off.

Technical specifications of OMEGA FSW800B

• Contact Type: Reed/magnet contact
  
• NC (Normally Closed): Contact open with air flow
  
• NO (Normally Open): Contact closed with air flow
  
• Switching Threshold of Air Flow Speed: >8.2 ft/s (2.5 m/s)
  
• Hysteresis: 3.3 ft/s (1 m/s)—fixed
  
• Contact Resistance Includes Wire: 370 mΩ
  
• Service Life: >100,000 cycles
  
• Max. Switching Capacity: 10 W (resistive load)
  
• Max. Switching Voltage: NC (AC/DC 240 V); NO (DC 60 V)
  
• Max. Switching Current: NC (DC 500 mA); NO (DC 170 mA)
  
• Connection: 2 x single strand AWG 26, length 500 mm (20′), tip of stranded wire stripped/tinned 5 mm (0.20′)
  
• Mounting: Attachment clamp and/or clip, or integrated in protective grill
  
• Housing: Plastic, black
  
• Dimensions: 34 x 17.5 x 7.5 mm (1.3 x 0.7 x 0.3′)
  
• Mounting Position: Air-flow monitor opening perpendicular to air flow
  
• Operating Temperature: -20 to 50°C (-4 to 122°F)
  
• Storage Temperature: -20 to 80°C (-4 to 176°F)
  
• Protection Type: NEMA 1 (IP 20)

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