14
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(continued)
If the reading is within ±4
P
in/±0.1
P
m
of the value stated on the label on the
bottom of the specimen*, calibration
Is within tolerance.
If the reading differs from the value
stated on the label (or on a Report
RI&DOLEUDWLRQFHUWL¿FDWHE\PRUH
than ±4
P
in/±0.1
P
m, take additional
readings around the central area
of
the Reference Specimen. If the
readings still differ by more than
the allowable tolerance, recalibrate
the Pocket Surf unit following the
procedure below.
2. Take a measurement on the Refer-
ence Specimen. While there is a
measurement on the display go to
Step 3 below. The display remains
visible for about 7 seconds. Be sure
to proceed from Steps 2 through 6
within seven seconds during each
step or you will have to begin again
from Step 2 should the display go
blank.
3. Press and hold the Start Button for
three seconds until the letters CAL
appear.
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while CAL is shown on the display.
5. Press the Start Button again to enter
the assessed value found on the
FDOLEUDWLRQFHUWL¿FDWHRIWKH5HIHU
-
ence Specimen. Or, enter the value
found on the back of the reference
specimen. Continue pressing the Start
Button to change the number in the
display until the same number as the
assessed value appears. The values
can range from 106µin/2.69µm through
135µin/3.43µm. Select the closest
value to the assessed value of the
Reference Specimen.
6. After the correct value appears, press
and hold the Start Button for three
seconds to lock-in the assessed value.
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times and disappears, release the Start
Button. The Pocket Surf
®
IV is now
calibrated.
7. Finally, run a test of the Reference
Specimen.
To check the condition of the probe
stylus, a “double patch” Reference
Specimen (optionally available) is rec-
ommended. A “double patch” Specimen
can also be used for calibration of the
gage; however,
EHVXUHWRXVHRQO\
WKH
P
LQ
P
PVHFWLRQRIWKH
VSHFLPHQIRUFDOLEUDWLRQSXUSRVHV
.
Be careful not to use the other section
of the “double patch” Specimen for
calibration as it could introduce seri-
ous errors into the gage’s roughness
readings. The 20
P
in/0.5 section is only
to be used for checking probe stylus
condition.
*
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