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G a u ge B l oc k C o m pa r ato r s

Presentation of TESA
measuring gage blocks

TESA offers two models, the operation of which is based on two different mea-
surement procedures.
–– TESA UPD directly measures gauge blocks within a measuring span of 25 mm/1 in.
–– TESA UPC is used for comparative measurement of gauge blocks having a

   same nominal length.

TESA Gauge Block Comparators                                                       UPD UPC

Measuring procedures                                                                 ▲▲
––Comparison of different nominal lengths up to 25 mm
––Number of reference gauge blocks required for the calibration of a set of 122             ❍
                                                                                     ❍❍
  pieces: 9 blocks
––Number of blocks required for the calibration of the device: 9 blocks + 6 pairs           ❍

Comparative measurement
––Comparison of gauge blocks having the same nominal length
––Number of reference gauge blocks required for the calibration of a set of 122

  pieces: 122 blocks
––Number of gauge blocks required for the calibration of the device: 6 pairs

Measuring errors
Read also the explanations provided in this same chapter with regard to the
measuring errors of each instrument

Repeatability limit                          0,015 µm

                                             0,025 µm

Measuring uncertainty                        U = ± (0,05 + 0,5 · L) µm L in m

                                             U = ± (0,10 + 1,0 · L) µm

Range of application                         0,5 to 100 mm/0.02 to 4.0 in
Nominal lengths

                                             0,5 to 500 mm/0.02 to 20 in

Measuring range
25 mm/1 in

Sensors for capturing length dimensions
––2 axial probes in sum measurement
––Digital measuring system, opto-electronic with incremental divisions
––Analogue measuring system, electronic and inductive
––Activation of the measuring force

  •	 electro-motorised
  •	by spring force
––Retraction of the measuring bolt
  •	electro-motorised
  •	by vacuum
Template system
––Single template system
––Dual template system
Positioning of gauge blocks with a nominal length of up up 10 mm
Suction loader with a an electric vacuum pump
TESA UPT temperature measuring device
Measurement of the electrical resistance using 4 thermal sensors (4 wire type)

TESA software for processing the measured values
––TESA UP, WINDOWS 98, 2000, NT, XP, 7 (32 bits)

▲ Available on request ❍ Recommended option

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