Laser Gauges VTLG
Laser Gauges VTLG
The VTLG laser gauges are designed for measuring the thickness of metal strips. The system uses a compact measuring head on a C-frame to transmit and receive measurement beams, calculating strip thickness from the distances measured by sensors on both sides of the strip.
The system measures the distance from the strip surface using sensors, and calculates the strip thickness based on these measurements and the distance between the sensors.
- Can be installed directly in the mill.
- Provides direct, absolute measurements regardless of alloy type.
- Offers precision up to one micrometer per millimeter of strip thickness.
- Measurement range: 0.003 – 30 mm.
- Air gap: 10 – 500 mm.
- Measurement resolution: 0.05 – 0.5 µm.
- Measurement accuracy: ± 0.1% of nominal value, not better than ± 0.5 µm.
- Sampling rate: up to 80 kHz.
- Width in strip pass direction: 100 – 220 mm.
- Height below pass line: 120 – 485 mm.
- Width outside line: 170 – 400 mm.
- Laser class: 3B.
- Power: 15 mW.
- Wavelength: 405 nm.
- Measurement spot diameter: 0.1 mm.
- Life time (MTBF): 80,000 hours.
- Positioning accuracy: ± 1 mm.
- Positioning speed: 8 – 20 m/min.
- Control unit dimensions: 760 mm x 1,000 mm x 300 mm.
- Interfaces: PROFINET, PROFIBUS DP, TCP/IP, hardware.
- Power supply: 3 x 380 – 460 V AC, 50 – 60 Hz, 3 kW.
- Protection class: C-frame IP65, control unit IP55.
- Operating temperature: C-frame 5 – 55 °C, control unit 5 – 45 °C.
- Compressed air quality: DIN ISO 8573-1 standards.
- Type series: VTLG.
- Process parameters: Suitable for metal strips with speeds > 0 – 2,000 m/min and max temperature of 180 °C.
- Data recording and statistical evaluation available.
Catalog excerpts
STRIP THICKNESS LASER GAUGES VTLG BFI-ROLLE Metal strip On the upper and lower sides of a C-frame is a compact measuring head which both transmits the measurement beam and receives the reflected light. Both sensors measure the distance from the strip surface. The system then calculates the thickness of the strip from the measured distances and the distance between the two sensors. Installation directly in the mill possible Direct, absolute measurement irrespective of the alloy Precision up to one micrometer per millimeter of strip thickness
Open the catalog to page 1
TYPE SERIES PROCESS PARAMETERS Material to be measured metal strip Strip speed mg/m² per side evenly spread, no drops Max. strip temperature Residual moisture on the strip MEASUREMENT PARAMETERS VTLG 406/6 VTLG 806/6 VTLG 1206/6 VTLG 406/13 VTLG 806/13 VTLG 1206/13 VTLG 412/20 VTLG 812/20 VTLG 1212/20 Measurement range Measurement depth (- 30 mm = max. strip width at cross profile measurement) Max. pass line variation during measurement Measurement resolution Measurement accuracy ± 0,1 % of nominal value (at Ti ≥ 10 ms, Rz ≤ 1 µm, angularity error ≤ 1°), but not better than: Horizontal positioning...
Open the catalog to page 2All VOLLMER catalogs and technical brochures
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