Instruction manual
30
mounted without any bending stress to the rail, which will cause
measuring inaccuracies.
3. Check that the bolts extending through the rail will not interfere with
the operation of the moving head. To provide the best accuracy,
provide large clearance holes in the mounting surface, and shim all
gaps precisely.
Notes about Accuracy:
ProCaliper has been thoroughly tested for accuracy against national
standards. This test data has been supplied. However, the following
situations can affect ProCaliper's overall accuracy. The specified
accuracy of ± 0.05mm (0.002 inches) per measured foot is achieved at
the heel (rail side) of the jaws. In some cases, this specified level of
accuracy may be exceeded at the tip of the jaws. This difference results
from the large distance between the center of the measuring scale inside
the caliper rail and the tips of the caliper jaws. Small changes in
temperature can cause slight differences in a given measurement.
Because ProCaliper's major components are made from aluminum,
which has a temperature coefficient of 23ppm/°C, it is strongly suggested
to use ProCaliper in a temperature stable environment (over the
2400mm [96 inch] measuring range, this coefficient can alter
measurements by 0.05mm [0.002 inches] per °C).
Operation:
1. Insert the object to be measured between the caliper jaws. While
holding the object against the measurement face of the fixed jaw,
slide the right jaw to the other end of the object until it stops.
2. Press in and rotate the fine adjustment thumb-wheel until the moving
jaw is tight against the object. If the position of the moving jaw
needs to be held in place, use the lock knob on the top of the moving
head.
3. If not using the ProCaliper with SPC data collection devices, press
the black button on the display to HOLD the displayed value. All of
the display's operations will be stopped until the black button is
pressed again.
4. Read the measurement data from the ProCaliper's display. The
displayed data can now be sent to an SPC data collector/processor
(if attached) by pressing the black button.