Laser Gauges VTLG

Laser Gauges VTLG

Laser Gauges VTLG

Product catalog summary
Overview: The document provides technical specifications and details for the VTLG laser gauges used for measuring strip thickness in metal strips. It outlines the application, function, advantages, measurement parameters, dimensions, laser parameters, control, connection data, and options available for the VTLG models.
Application: The VTLG laser gauges are designed for measuring the thickness of metal strips.
Function: The system uses a compact measuring head on both the upper and lower sides of a C-frame to transmit and receive measurement beams. It calculates strip thickness based on the distance measured from the strip surface and between the sensors.
Advantages: The system can be installed directly in the mill, provides direct and absolute measurements regardless of alloy, and offers precision up to one micrometer per millimeter of strip thickness.
Measurement Parameters: The document lists various measurement ranges, air gaps, measurement depths, and resolutions for different VTLG models. It also specifies the maximum pass line variation, measurement accuracy, and positioning details.
Dimensions: The dimensions for installation space, height below pass line, and width outside line are provided for different models.
Laser Parameters: The laser used is class 3B with a power of 15 mW and a wavelength of 405 nm. The measurement spot diameter is 0.1 mm, and the laser has a lifetime of 80,000 hours.
Control: Details on positioning accuracy, speed, and control unit dimensions are provided. The control unit supports various interfaces and has specific power supply requirements.
Connection Data / Consumptions / Environment: The document specifies interface options, power supply requirements, protection class, and environmental conditions for both the C-frame and control unit. Compressed air quality and supply details are also included.
Options: Various VTLG models are listed with their respective process parameters, including material type, strip speed, maximum strip temperature, and residual moisture.
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Catalog excerpts

Laser Gauges VTLG-1

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

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Laser Gauges VTLG-2

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...

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