IMC CANSAS - Page 187

Measurement modes 187
imc CANSAS Users Manual - Doc. Version 1.9 - 05.12.2014© 2014 imc Meßsysteme GmbH
5.1.2.1.9 Full bridge with 4 active strain gauges in uniaxial direction
N
4
K
U
U
B
IN
4N
U
IN
U
B
1 2
34
1
2
3
4
1 3
2 4
The circuit consists of 4 active WSGs. Two are under compression and the others under equal tension.
The strain gauges under tension are positioned in opposite bridge arms. The sensitivity to the moment of
bending is increased. At the same time, longitudinal force, torque and temperature are compensated.
The strain is computed as:
5.1.2.1.10 Full bridge (Half bridge-shear strain) opposite arms two active strain
gauges
N
4
K
U
U
B
IN
2N
R
2
R
4
U
IN
U
B
1
3
1
1
3
3
Two active strain gauges are placed under stress in equal magnitude. For measurement of tension and
compression (non-linear) to eliminate bending. Temperature gradient should be small. The strain is
computed as: