SCC-SG Series Strain-Gauge Modules User Guide
16
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SCC-SG04/24 Full-Bridge Connection
In a full-bridge configuration, you use four active strain-gauge elements in
the bridge configuration with all of the elements external to the SCC
module. There are three full-bridge configuration types supported by
NI software. The following sections describe how to connect full-bridge
configuration types I, II, and III.
The SCC-SG04/24 module labels display the icon shown in Figure 11.
These icon labels also represent the bridge configuration of the modules.
Note
By factory-default the nulling resistors are
not
installed in the SCC-SG24. Refer to
section for information on installing the nulling resistors.
Figure 11.
SCC-SG04/24 Icon
Full-Bridge Type I
This section provides information for the full-bridge strain-gauge
configuration type I. The full-bridge type I only measures bending strain.
Figure 12 shows a general full-bridge type I circuit diagram.
Figure 12.
Full-Bridge Type I Circuit Diagram
+
–
–
+
V
EX
V
CH
R
4
(+ )
R
3
(– )
R
1
(– )
R
2
(+ )
