Measuring
Adapting to the transducer
142 A0534-30.0 HBM: public MGCplus
The measurement system always measures the total strain () of the indi
vidual SGs active in the Wheatstone bridge. Individual SGs are usually used
for mechanical stress analysis in practical applications.
The half bridge circuit and full bridge circuit are used on account of tempera
ture compensation, the larger measurement signal, better cable resistance
compensation and for some stress states (measuring on a bending beam,
etc.). The most important characteristic value of a SG is the gage factor.
The MGCplus measurement system automatically switches to strain mea
surements if a gage factor >0 is entered. The zero point and measuring
range are scaled in m/m. By changing the unit and the display value you
can derive other physical quantity quantities (such as mechanical stress in
N/mm
2
). If zero is entered as a gage factor, the system switches to mV/V.
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