Page 24 of 82
Date: 27.01.06
6.9.1.3.1 Calibration using a physical variable by the teach-in method
This method involves a two-stage online teach-in of sensor data to the Sensor
Profibus Module, where two teach-in states are applied sequentially. The first
state is the lower scale value, and the second state is the upper scale value.
Example: Remove any load from the load cell and calibrate the zero point
F = 0 N. Now press the “Teach-in lower calibration value” button (see
A
). Now apply a known reference weight to the load cell e.g. F =
100 N and set the upper scale value. Now press the “Teach-in upper
calibration value” button (see
B
).
This calibration data must now be transferred to the instrument; if
required it can also be saved under a user-definable program name.
100
kg
Force
F [N]
100
0
Teach-IN value 2
Value in [mV]
measured by
instrument
Teach-IN value 1
idealized sensor
calibration line
A
B
