©
National Instruments Corporation
43
SCC-SG Series Strain-Gauge Modules User Guide
To simulate the effect on strain of applying a shunt resistor across R
4
, use
the following equation:
Full-Bridge Type II
To convert voltage readings to strain units use the following equation:
To simulate the effect on strain of applying a shunt resistor across R
4
, use
the following equation:
Full-Bridge Type III
To convert voltage readings to strain units use the following equation:
To simulate the effect on strain of applying a shunt resistor across R
4
, use
the following equation:
ε
s
U
GF
--------
=
strain
ε
( )
2
–
V
r
GF
1
v
+
(
)
-------------------------
=
ε
s
2
U
GF
1
v
+
(
)
-------------------------
=
strain
ε
( )
2
–
V
r
GF v
1
+
(
)
V
r
v
1
–
(
)
–
[
]
----------------------------------------------------------
=
ε
s
4
U
GF v
1
+
(
)
U v
1
–
(
)
–
[
]
---------------------------------------------------------
=
