Zeiss Axiotech, Руководство по эксплуатации

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Axiotech and Axiotech
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Carl Zeiss
B 40-020 e 06/99 3-41
3.7.2.3 Measuring with the digital eyepiece measuring device
Identical to measurements using eyepiece reticles (see section 3.7.1), the scale constant must also be
calculated for the measurement of object sizes using the eyepiece measuring device. Only in the case of
the eyepiece measuring device is the scale constant the distance in the object plane which corresponds
to one increment of digits on the digital display of the integrated micrometer (in the case of the
integrated micrometer with drum gradation: the gradation interval of the measurement drum).
Example:
Number of measured scale parts of the object micrometer................................ ............................. n = 30
Number of scale parts determined with the integrated digital micrometer
for 30 scale parts of the object micrometer ................................ ................................ ............. n' = 6024
(calculated from the value measured for 30 scale parts of the object micrometer
the micrometer amounting to 6.054 mm and the smallest digital increment of 1 mm as scale part
⇒
6.054 mm / 1
µ
m per scale part = 6.024 mm / 0.001 mm per scale part = 6024 scale parts)
object micrometer gradation distance 5 + 100 / 100y ................................ .............................. k = 10
µ
m
Therefore:
⇒
scale constant on digital eyepiece micrometer k' = (30 / 6024)
×
10
µ
m = 0.0498
µ
m
For an object detail measured using the digital micrometer (measured value 2.748 mm = 2748 scale
parts), this scale constant results in the following object size:
⇒
L = 2748 x 0.0498
µ
m = 136.85
µ
m = 0.13685 mm
measuring procedure:
•
Move the selected measuring mark until it is flush with the starting point of the specimen
structure/distance to be measured
⇒
1
st
read-off value.
•
Use the drive of the integrated measuring spindle to move the measuring mark to the end point of
the object structure/distance to be measured until it is flush with the end point
⇒
2
nd
read-off value.
•
The difference between the two read-off values converted to scale parts is the result of the
measurement.
☞
To minimize random deviation, the object must be measured several times and the average of
these single measurements must be taken as the result.
digital micrometer 46 EH:
The digital micrometer 46 EH features a function selection ring and a function key. This makes it
possible to choose from different measuring functions:
•
value adjustment to "+" or "-" (PRESET),
•
normal use "N",