Visual Distance Measurement on Hot Surfaces

Grafics showing the technology for laser-based measurements on hot surfacesfor measuring distances, detecting positions, controlling filling levels and detecting geometric profiles on hot surfaces up to 1,500 °C.

These very harsh environmental conditions require specially configured technology and instrumentation of the measuring systems, for example protective housings and cooling frames.

Phase Shift Technology                          

  • Application: LMC-J-0050-XX-X 
  • Measuring range from 0.1 m up to 150 m
  •  fmod = 800 MHz;  cw-LD →635 / 650 nm


Pulse back-mixing method

  • Application: LMC-J-0060-2-X
  • Measuring range from 0.1 m up to 500 m
  • Measuring rates up to 100 Hz, metering time period 1ps ≈ 0.15 mm
  • Application in system: LMC-R-0093
  • Measuring range from 0.5 up to 5 m and up to 1,650 °C surface temperature
  • Measuring rates up to 10 Hz


Measuring on hot surfaces in steel industries up to 1,500 °C