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Bowers M1 - Page 88

Bowers M1
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M1 M3 Display Units
Page 88
b Temperature compensation mode
When the « compensation mode » is activated, it is requested to enter the expansion
coefficient. As an information, on the below table you can see the coefficients of the
main materials (source Wikipedia):
Material
α in 10
-6
/K at 20 °C
Aluminium
23
Brass
19
Stainless steel
17.3
Copper
17
Gold
14
Nickel
13
Iron or Steel
11.1
Carbon steel
10.8
Platinium
9
Glass
8.5
Tungsten
4.5
The compensation is done assuming that the Master part has been measured at 20°C.
If it is not the case, select the option “advanced” and a next page appear, allowing to
enter the temperature of the master during the measurement according to its certificate:
Compensation mode
Expansion coefficient
If validated (green), a
new screen appears
allowing to set the
temperature of the
master’s certificate.
Temperature indicated
on the certificate
Reference temperature