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3.3.1 Verify calibration of durometer models:
HP-2.5, HP-5 and HP-10
(with concave-shaped base)
- Press the durometer down on the optional Zero Test Block (HP-PT) (fig. 3.3.1).
Do not move the spring-loaded outer shell.
The scale pointer should make one full turn on the scale, from zero to zero.
If the result of verification is positive, the durometer should show correct readings.
3.3 Verification of Calibration
Scale
Outer shell
Color marking
Holding screws
Zero Test Block Model HP-PT for textile du-
rometer models with concave-shaped base
fig. 3.3.1
Models: HP-2.5, HP-5 and HP-10
You can test that the instrument is functional and undamaged by pressing the flat-bot-
tomed models (“-F” models) against a smooth, level surface (such as glass or marble).
When fully pressed down, the scale pointer should make one full turn on the scale, from
zero to zero. The scale pointer should return to the initial zero position when you release
pressure. If it does not, return the instrument to the manufacturer for servicing.
On models with a concave base (for measuring bobbins, etc.) you can perform a similar
“full scale” test using the optional Zero Test Block (part number HP-PT).
Optional calibration certification must be ordered separately, prior to delivery of the in-
strument. Subsequent calibration is only possible at the manufacturer’s facilities.
Do not loosen the holding screws of the movement under any circumstanc-
es. Loosening these screws may alter the calibration of the instrument.
Содержание HP Series
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