Logika Technologies

LM-SD – Standard Distance Laser Meter

The LM-SD is a laser-based distance measurement tool capable of measuring distance with pinpoint accuracy. A given target can be clearly identified with the help of the visible red laser spot. LM-SD is typically used for hot targets less than 1000°C (1832°F) up to a distance of 30 meters (98.4 feet) and for colder objects with a reflective target added for distances up to 100 meters (328 feet). 

The principle of operation is based on comparative phase measurement. It emits high frequency modulated light which is diffusely reflected from the target and returns to the instrument with a certain phase shift compared with the emitted signal. The distance can then be determined with millimeter accuracy from the amount of this phase shift.

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Applications

  • Slab / Billet / Bloom
  • Thin Strip
  • Furnace Entrance
  • Hot Strip / Plate Mill
  • Long Products Rolling
  • Pipe and Tube
  • Wire / Rod
  • Heat Treatment Furnace
  • Forging
  • Cold Rolling

Features

  • Designed for harsh environment, up to 110°C (230°F) ambient, with IP66 Enclosure
  • Integrated Air Purging to keep front window clean
  • Quick access back side display and controls
  • Easy to install, drop-in replacement for competitive products
  • Provides high accuracy over long distances under extreme ambient conditions.
  • Up to 30m range for distance measurement, with the potential for more than 100m if additional reflectors are mounted onto the target (depending on reflectance and environmental conditions).
  • Visible aiming laser beam for easy alignment.
  • Relay and digital alarm output, analog output, serial communication
  • Access to an experienced applications engineering support team (included with all Logika products)

Options

  • Custom length Power Cable
  • Thermally insulated reflective jacket for extending sensor life in extremely harsh conditions
  • Support Stand - Steel Construction

Specifications

Operating Temp:
-10°C to +50°C (14°F to 122°F). With cooling water up to 110°C (230°F)
Power Input:
24 VDC ± 10% < 1.5 W
Output:
Relay NO/NC 125 VAC @ 0.3 A, PNP output 24 VDC @ 300 mA 4-20 mA @ ≤500 Ω, Accuracy ± 0.15%
Response Time:
Relay < 320 ms, PNP < 300 ms
Measuring Range:
0.2 m to 100 m (0.6 ft. to 328 ft.) Reflector needed between 30 m and 100 m (98 ft. to 328 ft.)
Target Object:
Opaque object larger than φ50 mm (2”)
Accuracy:
± 3 mm within 30 m (98 ft.) range, Resolution= 0.1 mm
Cable:
Insulation 20 MΩ, 500 VDC, ≥ 500°C (930°F)
Housing:
Environmentally sealed cast aluminum enclosure rated IP66 includes cooling water connections and air purge
Size:
Enclosure; 280 mm L x 89 mm D x 300 mm H (with mounting bracket) (11“ L x 3.5“ D x 11.8“ H), 6 kg (13.3 lbs)
Display:
Back Panel online display
Laser:
650 nm visible red, <1 mW Class II, 0.6 mrad scattering

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