HEIDENHAIN Length Gauges - Manual (Page 4)

4
Areas of application
In quality assurance
Metrology and production
control
Length gauges from HEIDENHAIN play a
role in incoming goods inspection, fast
dimension checking during production,
statistical process control in production or
quality assurance, or in any application
where fast, reliable and accurate length
measurement is required. Their large
measuring lengths are a particular advan-
tage: whether the part measures 5 mm or
95 mm, it is measured immediately with
one and the same length gauge.
Whatever the application, HEIDENHAIN
has the appropriate length gauge for the
required accuracy. The HEIDENHAIN-
CERTO length gauges offer a very high
accuracy of ± 0.1 µm/± 0.05 µm*/
± 0.03 µm* for extremely precise meas-
urement. Length gauges from the
HEIDENHAIN-METRO program have
accuracy grades as fine as ± 0.2 µm, while
the HEIDENHAIN-SPECTO length gauges,
with ± 1 µm accuracy, offer particularly
compact dimensions.
* After linear length-error compensation in
the evaluation electronics
Gauge block calibration and
measuring device inspection
The regular inspection of measuring
equipment called for by standards, and the
inspection of gauge blocks in particular,
necessitate a large number of reference
standard blocks if the comparative meas-
urement is performed using inductive
gauges. The problem is the small meas-
uring range of inductive gauges: they can
measure length differences of only up to
10 µm. Length gauges, which offer large
measuring ranges together with high
accuracy, greatly simplify the calibration
of measuring devices required to ensure
traceability.
The length gauges of the HEIDENHAIN-
CERTO program with measuring ranges of
25 mm with ± 0.1 µm/± 0.03 µm* accuracy
and 60 mm with ± 0.1 µm/± 0.05 µm*
accuracy are especially well suited for this
task. It permits a significant reduction in
the required number of reference standard
blocks, and recalibrating becomes much
simpler.
Thickness gauging of silicon wafers
Inspection of styli
Calibration of
gauge blocks