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Production sequence of Si-spheres and interferometrical determination of the sphere volume

Interferometric Calibration of Gauge Blocks

Working Group 5.43

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The measurement and calibration capabilities of Dicision 5 are available as pdf-file. They are integrated in the quality management system of the PTB, which meets the requirements for calibration and testing laboratories as defined in the DIN EN ISO/IEC 17025.

Initiates file download Measurement and calibration capabilities of the Division 5 (extract QMH Div. 5 , version 06/2009), PDF-Datei (140 KB).
On the sides 12/13 "Interferometric Calibration of Gauge Blocks". you will find the measurement and calibration capabilities of Working group 5.43


Calibration of gauge blocks

 


Measurand / artefact


Measurand level
or range


Expanded uncertainty


Central length / Gauge blocks
(interferometric measurement)

0,5 mm up to 200 mm

Q[20; 0,18 L] in nm;
L in mm


Length difference / Pairs of gauge blocks
(interferometric measurement)

0,5 mm up to 100 mm

10 to 14 nm


Central length / Gauge blocks
(interferometric measurement)

100 mm up to 1000 mm

Q[22; 0,066 L] in nm;
L in mm


Thermal expansion / Gauge blocks
(interferometric measurement)

60 mm up to 1000 mm

Q[2,4/L; 2,2; 0,46α]
in 10-9 . K-1; L in m;
α in 10-9 . K-1


Thermal expansion / Gauge blocks
(mechanical measurement)

60 mm up to 100 mm

1,6 ... 1,1 . 10-7 . K-1


Central length / Gauge blocks
(mechanical measurement)

200 mm up to 1000 mm

Q[30; 0,12L] in nm;
L in mm


Thermal expansion / Gauge blocks
(mechanical measurement)

125 mm up to 1000 mm

12 ... 3,6 . 10-8 . K-1


Special measurments

200 mm up to 4 000 mm

on request