Scc-Sg03 Half-Bridge Connection; Half-Bridge Type I - National Instruments SCC-SG Series User Manual

SCC-SG03 Half-Bridge Connection

SCC-SG Series Strain-Gauge Modules User Guide
resistors are socketed for easy replacement. Refer to the
Resistors section for more information.
In a half-bridge configuration, you use two active strain-gauge elements.
A half-bridge completion reference inside the SCC-SG03 completes the
bridge configuration. There are two half-bridge configuration types
supported by NI software, and one quarter-bridge configuration type that
requires half-bridge completion. The following sections describe how to
connect half-bridge strain-gauge configuration types I and II and
quarter-bridge strain-gauge configuration type II.
The SCC-SG03 module label displays the icon shown in Figure 6.
This icon label also represents the module bridge configuration.

Half-Bridge Type I

This section provides information for the half-bridge strain-gauge
configuration type I. The half-bridge type I measures either axial or
bending strain.
Figure 7 shows a general half-bridge type I circuit diagram.
+
V
EX
–
Figure 7. Half-Bridge Type I Circuit Diagram
Figure 6. SCC-SG03 Icon
R
1
– +
V
CH
R
2
12
Replacing
R
L
(+ )
R
4
R
L
(– )
R
3
R
L
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