SCC-SG Series Strain-Gauge Modules User Guide
46
ni.com
Power Requirements
Analog power .........................................143 mW max
+
15 VDC .........................................4.75 mA max
–15 VDC..........................................4.75 mA max
Digital power ..........................................210 mW max
+
5 VDC ...........................................42 mA max
Operating voltage range
+
15 VDC
.........................................±
10%
–15 VDC
..........................................±
10%
+
5 VDC
...........................................±
5%
REF5 VDC
......................................±
0.05%
SCC-SG24 Strain-Gauge Input Module
Analog Input
Number of strain-gauge channels ...........2 differential
Input signal ranges
..................................±
100 mV (fixed gain of 100
on each channel)
Strain-gauge bridge configuration ..........Full-bridge
Overvoltage protection
...........................±
42 VDC powered on and
powered off
Inputs protected ......................................<0,1>
Transfer Characteristics
Gain ........................................................100
Gain error
................................................±
0.20% of reading max
Offset error
.............................................±
50
µ
V typ, 325
µ
V max before
calibration
1
Nonlinearity ............................................200 ppm max of full-scale range
Bandwidth...............................................1.6 kHz single-pole buffered
RC filter
1
By factory-default the nulling resistors are not installed in the SCC-SG24. Refer to the
section for
information on installing the nulling resistors. To nullify the offset error values with trimming potentiometers located on the
module, refer to the
section or negate the values in your software application.
