National Instruments Module SCXI-1503 - Manual (Page 7)

Contents
© National Instruments Corporation vii SCXI-1503 User Manual
Appendix A
Specifications
Appendix B
Removing the SCXI-1503
Appendix C
Common Questions
Glossary
Index
Figures
Figure 2-1. 4-Wire Resistive Sensor Connected in a 4-Wire Configuration ...........2-3
Figure 2-2. 2-Wire Resistive Sensor Connected in a 2-Wire Configuration ...........2-4
Figure 2-3. 3-Wire Resistive Sensor Configuration.................................................2-5
Figure 2-4. 3-Wire Configuration Using Matched Current Sources........................2-6
Figure 4-1. Block Diagram of SCXI-1503...............................................................4-2
Figure 4-2. 2-Wire RTD Measurement ....................................................................4-6
Figure 4-3. Resistance-Temperature Curve for a 100
Ω Platinum RTD,
α = 0.00385 ...........................................................................................4-7
Figure 4-4. Resistance-Temperature Curve for a 2,252
Ω Thermistor ....................4-11
Figure 4-5. Thermistor Measurement with Constant Current Excitation ................4-11
Figure 5-1. Typical Program Flowchart for Voltage Measurement Channels.........5-2
Figure A-1. SCXI-1503 Dimensions ........................................................................A-5
Figure B-1. Removing the SCXI-1503 .....................................................................B-2