TESA MICRO-HITE - Page 25

Instruction manual for MH & MH+M
25
Interpreting the results
Interpreting the results according to the standard ISO 13225 your height gauge refers to,
requires a definition of the following parameters.
B
Error of indication of the height gauge for surfaces measured in opposite
directions. We talk about bi-directional measurements.
B
MPE
Upper tolerance of B parameter.
E
Error of indication of the height gauge for surfaces measured down. We talk
about uni-directional measurement.
E
MPE
Upper tolerance of E parameter.
R
Repeatability error (2σ).
R
MPE
Upper tolerance of R parameter.
For informative purposes, parameters that correspond to perpendicularity are given by:
S
Perpendicularity error (ZX).
S
MPE
Upper tolerance of parameter S.
E
MPE
R
MPE
S
MPE
The maximum permissible error is indicated as follows (A, B, C and D are constants, L
corresponds to the measured length in meters).
B
MPE
= A + B x L
E
MPE
= C + D x L
Starting from the zero reference point, with its height position corresponding approximately to
the reference surface of the granite plate, no error (measured value – nominal value) is above
the admissible limits. All measuring results are therefore in the violet zone.