Press Force Sensor
Type 9323AA, 9323A, 9333A, 9343A, 9363A, 9383A, 9393A
Page 74 9323A_002-476e-11.24
equilibrium with its environment. Temperature errors are
caused by changes in stress in the sensor, which in turn are
influenced by the preload or installation conditions.
Temperature gradient error (dynamic error)
A temporary change in the output signal is denoted as
temperature gradient error, when the temperature of the
environment or surrounding medium changes with a
certain rate. In this case, the sensor is not in thermal
equilibrium with the environment.
The temperature gradient error is primarily determined by
the installation conditions and the application, and cannot
be generally specified. However, the temperature gradient
error can be significant, particularly in the case of sensitive
measurements and small measured values. It is therefore
extremely important to keep the sensor temperature
constant during the actual measuring time.
Fig. 41: Example of a temperature error of the output
signal zero for a temperature rise from 150 °C to 200 °C
(immersion bath).
Temperature coefficient of sensitivity
Change in the sensitivity, i.e. the slope of the best straight
line, as a function of temperature. The temperature
distribution in the sensor is assumed to be homogeneous,
and in thermal equilibrium with the environment. The
temperature coefficient of the sensitivity is typically only
approx. 0,02 %/°C, and is thus mostly negligible
compared with other influences.
Tauchbadfehler 150....200°C
Immersion Bath Error 150 ... 200 °C
Temperature
zero point (static error)
Temperature gradient error
(dynamic error)
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