Clarke's Industries



Proud USA Company

AL Sensor

AL Sensor


  • For pipes up to 79" in diameter.
  • Durable Cast Aluminum Enclosure.
  • Size: L 7-5/8" x W 3-1/8" x H 2-7/8"
  • Voltage:  20VDC
  • Current:  9.85ma
  • Viewing Angle: 120° @ 50% on axis
  • Operating Temp: -40°F to 122°F
  • Spectral Response: 1900-3000 nm
  • Sensitivity: 628uW/sr @ 1 Meter
  • Effective Sensitive Area: 5 mm^2
  • Enclosure Type: NEMA 4X
  • Two Year Warranty
  • Designed and Assembled in USA

The PyroGuard AL sensor is an Ambient Light Sensor that is typically used in drop chutes where material is transferred. Unlike the HT and LP sensors the AL sensors will tolerate daylight. The AL sensor mounts to the pipe using a Sensor Mounting Adapter (SMA) for easy removal.

With the SMA the AL sensor mounts securely to the duct using rubber "O" rings spaced inside the SMA to grip the machined sensor lens cover. No brackets or clamps are required for mounting. All AL sensors are housed in a cast aluminum enclosure with water tight seals and quick disconnect pigtails.

Sensor Brochure

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