Length Bar Interferometer

The LBI1.5 was designed by the UK NPL to meet the requirement for calibrating longer type Length Standards at a Primary level and with the best possible Measurement Uncertainty.  Long Series Gage Blocks and Length Bars in lengths up to 1.5 meters (60") can be accommodated.

The LBI1.5 uses the same FLaP software as used on the GBI300 Gage Block Interferometer.

Features
  • Triple wavelength measurement for easier pre-classification of Length Standard size
  • Three frequency stabilized laser light sources
  • Phase-stepping optical system for high precision length measurement and detailed analysis of Length Standard surface geometry
  • Horizontal support of the Length Standard meets specification requirements
  • Insulating and temperature controlled enclosure of the optical system
  • Full and automatic measurement and compensation for ambient conditions
  • Integrated and rapid Flatness and Length Variation measurement
  • Automatic calculation and print-out of measurement results in inch or metric units
  • Flexible image processing software for measurement of rectangular and square (Hoke) long series Gage Blocks and round (British) Length Bars
About you
About your company
 Measurement  Capacity: 
 Length Standards from 100 mm to 1500 mm (4" to 60") in length

 Length Standard  types:  Rectangular, Square and Round Gages made from Steel, Ceramic, Tungsten Carbide, Chrome  Carbide etc.
 Length Measurement  Uncertainty: 
 A Measurement Uncertainty of ± [0.045 + (0.06 x L)] micrometers (“L” in meters) is possible  when the LBI1.5 is located within the correct environment
 Features measured:
 Gage Length and the Flatness and Length Variation over the measuring faces of the Gage  Block

 Measurement  Results:
 Displayed in Metric or English as appropriate

 Software: 
 FLaP for Windows™ validated by NPL for precision of computation

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