HEIDENHAIN Length Gauges - Manual (Page 14)

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All HEIDENHAIN length gauges are in-
spected before shipping for accuracy
and proper function.
They are calibrated for accuracy during
retraction and extension of the plunger. For
HEIDENHAIN-CERTO gauges, the number
of measuring positions is selected to
ascertain very exactly not only the long-
range error, but also the position error
within one signal period.
The Quality Inspection Certifi cate
confi rms the specifi ed system accuracy
of each length gauge. The calibration
standards ensure the traceability—as
required by EN ISO 9001—to recognized
national or international standards.
For the HEIDENHAIN-METRO and HEIDEN-
HAIN-CERTO series, a calibration chart
documents the position error over the
measuring range. It also shows the meas-
uring step and the measuring uncertainty
of the calibration measurement.
For HEIDENHAIN-METRO gauges the
calibration chart shows the mean value of
one forward and one backward measuring
stroke.
The HEIDENHAIN-CERTO calibration chart
shows the envelope curve of the mea-
sured error. The HEIDENHAIN-CERTO
length gauges are supplied with two cali-
bration charts, each for different operating
attitudes.
Example
Temperature range
The length gauges are inspected at a
reference temperature of 20 °C. The
system accuracy given in the calibration
chart applies at this temperature.
The operating temperature indicates the
ambient temperature limits between which
the length gauges will function properly.
The storage temperature range of -20 °C
to 60 °C applies for the device in its pack-
aging.
Operating attitude for calibration chart 2
Operating attitude for calibration chart 1
Calibration chart