The UK NPL created the LBI1.5 to satisfy the need for primary-level calibration of longer type Length Standards with optimal Measurement Uncertainty. Length bars and long series gauge blocks up to 1.5 meters (60″) in length are supported.
The FLaP software utilized by the GBI300 Gage Block Interferometer is also utilized by the LBI1.5.
Features
– Three laser light sources equipped with frequency stabilization
– A phase-stepping optical device for detailed analysis of Length Standard surface geometry and precise length measurements
– The horizontal support of the Length Standard meets all specified requirements
– The optical system is enclosed with insulation and temperature control
– Complete, automated measurement and adjustment of ambient conditions
– Rapid and integrated measurement of length variation and flatness
– Automatic production of metric or inch units when measuring length
– An adaptable image processing program for determining round, square, and rectangular length standards
Technical data
| Measurement Capacity | Length Standards from 100 mm to 1500 mm (4″ to 60″) in length |
| Length Standard types | Rectangular, Square and Round Gauges made from Steel, Ceramic, Tungsten Carbide, Chrome Carbide etc. |
| Length Measurement Uncertainty | A Measurement Uncertainty of ± √(492 + (87 x L)2) nanometres (“L” in meters) is possible when the LBI1.5 is located within the correct environment |
| Features measured | Gauge Length, Flatness, and Variation in Length, of the Length Standard |
| Measurement Results | Displayed in Metric or Inch as appropriate |
| Software | FLaP for Windows™ validated by NPL for precision of computation |