Mahr Digimar 817 CLM, Руководство по эксплуатации

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Mahr GmbH • Digimar 817 CLM
6.14 Advanced settings
Described in this chapter are settings / functions that
are meant for advanced users in which more in depth
changes can be performed.
Attention:
Incorrect or inappropriate settings can lead to
inaccurate measurement results!
6.14.2 Temperature compensation
If the height measuring instrument is operated in a
room which is not equipped with an air conditioning
system, or if the workpieces are either too warm or too
cold, the workpiece temperature must be taken into
consideration to increase the measuring accuracy. To
do so, enter the temperature of the workpiece and the
coefficient of expansion of the workpiece material. The
dimensions measured on the workpiece are then
related to a reference temperature of 20 °C / 68°F.
1. <-_______
2. Temperature compensation
3. Probe calibration parameters
4. Function key F3
5. Enter password
6. Correction tables
7. Clear functions menu
8. Import language from USB
1. No Temp. compensation
2. Temp. part = Tmp. gage
3. Enter temp. part
Testpiece temp.
20.000
Expansion. μ m/m/°
11.000
1. <-_______
2. Standstill-time
3. Contacting speed
4. Resolution
5. mm/inch
6. Language
7. Date and time
8. LCD settings
9. Beep ON/OFF
10. Auto – off time (min)
11. Quick-Mode
12. Perpendicularity
13. Data and printer
14. Advanced settings
Important requirements:
- The ambient temperature must be stable
- The temperature of the height measuring
instrument and the workpiece must be recorded
- The coefficient of expansion of the workpiece must
be known.
(Attention: The composition of the workpiece).
By incorrect operation and input of the necessary
parameters, accurate measured values cannot be
obtained.
1. No temperature compensation (standard setting)
2. Temperature of the workpiece and the
temperature of the column are the same
3. Enter the temperature of the workpiece (workpiece
is very warm – and the measurement is being
concluded in an acclimatized room at 20 °C / 68°F).
Examples of coefficients of expansion
α αα αα
, 10 to the
power of -6 / K at 20 °C / 68°F:
- Chromium steel 10.0
- Iron 12.1
- Aluminum 23.8
- Brass 18.0
- Gray cast iron 11.8