National Instruments SCC-SG Series User Manual

National Instruments SCC-SG Series User Manual Manual pdf 1 page image

SCC-SG Series Strain-GaugeModules User GuideThe SCC-SG Series strain-gauge input modules (SCC-SGXX) allow you totake quarter-, half-, and full-bridge configuration strain measurements. Usethem as follows:• SCC-SG01 for 120 Ω quarter-bridge configurations.• SCC-SG02 for 350 Ω quarter-bridge configurations.• SCC-SG03 for half-bridge configurations.• SCC-SG04 for full-bridge configurations.• SCC-SG24 for at least 350 Ω full-bridge configurations.Each module consists of two strain-gauge input channels, offset-nullingcircuitry for each channel, and an excitation circuit. Each input channelincludes an instrumentation amplifier with differential inputs and a fixedgain of 100.The SCC-SG11 is a shunt calibration module. It contains two pairs ofswitches and resistors that you connect across strain-gauge elements whereyou want to perform shunt calibration.ContentsStrain Gauges .......................................................................................... 3Conventions ............................................................................................ 4What You Need to Get Started ............................................................... 5Unpacking the Module............................................................................ 6Installing the Module .............................................................................. 6Connecting Strain-Gauge Input Signals.................................................. 7Panelettes ......................................................................................... 8SCC-SG0X and SCC-SG24 .................................................................... 8Variable Definitions......................................................................... 8SCC-SG01/02 Quarter-Bridge Connection ..................................... 9Quarter-Bridge Type I .............................................................. 10SCC-SG03 Half-Bridge Connection................................................ 12Half-Bridge Type I ................................................................... 12