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DELTA laser light barrier VLP21/VRH-S, 230 V AC
DELTA laser light barrier VLP21/VRH-S, 230 V AC

DELTA laser light barrier VLP21/VRH-S, 230 V AC

  • Slab and bloom detection at reheating furnace exit
  • Position control in rolling mills
  • Harsh environments with steam, dust, and heat
  • Steel industry process lines
  • Detection before crop shear
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    The DELTA VLP21/VRH-S is a through-beam laser barrier designed for extreme conditions. The VLP21 emitter sends a high-power infrared laser pulse, which is received by the VRH receiver. Thanks to modulated emission and optical filtering, the system is immune to ambient light and furnace radiation. With IP67 protection, optional air purging, and water cooling, it ensures reliable operation in harsh steel mill environments.
  • Model: VLP21/VRH-S
  • Power Supply: 230 V AC
  • Wavelength: 905 nm (infrared laser)
  • Protection Rating: IP67 (cast aluminum housing)
  • Weight: Approx. 5 kg (emitter + receiver)
  • Output Type: Static (push-pull) or relay output
  • Alignment:
    • Red laser pointer (Class 2, <1 mW)
    • Green laser pointer (Class 3R, <5 mW)
  • Special Features:
    • Immune to ambient light and furnace radiation
    • Pre-failure alarm when lenses are dirty
    • Air purging and water cooling options
    • Modular design for quick maintenance
  • Typical Application: Slab detection at reheating furnace exit
  • Operating Environment: Steam, dust, high temperature