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參數(shù)資料
| 型號： | 4334000 |
| 英文描述： | COMPARATOR MILLIMESS |
| 中文描述： | 比較器MILLIMESS |
| 文件頁數(shù)： | 2/25頁 |
| 文件大?。?/td> | 773K |
| 代理商： | 4334000 |
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Testing of Test Indicators, Dial Indicators and Dial Comparators
All test indicators, dial indicators and dial comparators are subject to a final inspection in production
on Mahr measuring machines (865, 875 and Optimar 100).
The following, in
DIN 2270 (test indicators)
DIN 878 (dial indicators)
DIN 879 (dial comparators)
defined parameters, will be tested:
D
s
Set-point reading
Local span of error
Plunger being pressed in
Plunger being let out
Diagram for the spans of error f
e
and f
ges
and hysteresis error of the measured
value f
u
(example)
Diagram of the span of error f
t
(example)
Set-point reading
D
s
Span of error f
Span of error f
is the distance
between the ordinates of the
highest and lowest points in
the deviation diagram either
when the plunger is being
pressed in (dial indicators, dial
comparators) or in the case of
excursion of stylus against
measuring force (test
indicators).
Total span of error f
ges
The total span of error f
is the distance between the ordinates
of the highest and lowest points in the deviation diagram when
the plunger is being pressed in and let out (dial indicators, dial
comparators) or in the case of excursion of stylus against and
with the same direction of measuring force (test indicators). The
total span of error includes the hysteresis error of the measured
value f
u
.
Local span of error f
Span of error f
is the distance between the ordinates between
the highest and lowest points in the deviation diagram,
measured for a local measuring span of 10 scale divisions within
0,1 mm when the plunger is being pressed in (dial indicators, dial
comparators) or in the case of excursion of stylus against
measuring force (test indicators).
Repeatability f
Repeatability f
is a characteristic for measured value fluctuations
in measurements of the same measurand within the measuring
span and with the same direction of movement of the plunger
(dial indicators, dial comparators) or of the stylus (test
indicators).
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