Test & Measurement


Strain gauge and HV DAQ modules

4 March 2009 Test & Measurement

National Instruments has expanded its C Series data acquisition family with the NI 9225 300 V power measurement module as well as the NI 9235 and NI 9236 eight-channel strain gauge measurement modules. These modules are supported on NI C series-based devices including the NI CompactDAQ plug-and-play data acquisition system, NI CompactRIO rugged control and acquisition system and NI Single-Board RIO embedded design devices.

Using the 9225 module, engineers can make high-voltage measurements to test battery stacks or monitor power quality events. The analog input module is designed for high-voltage waveform measurements, such as line-to-neutral and line-to-line measurements of 110 V power grids and line-to-neutral measurements of 240 V power grids. The module has three simultaneously sampled channels at 50 KSps for accurate three-phase power metering and power quality measurements such as flicker, harmonics and power factor.

The strain gauge modules deliver eight channels of simultaneously sampled 24-bit quarter-bridge strain gauge measurements. The channel density and fast sampling rate of 10 KSps per channel make these modules well-suited for structural health monitoring, dynamic mechanical test and impact test. Engineers can synchronise up to eight modules in an NI CompactDAQ or CompactRIO chassis to create a 64-channel strain measurement system, and synchronise multiple chassis to the same clock or GPS signal for even higher-channel-count or distributed systems.

For more information contact National Instruments, 0800 203 199, sales@natinst.co.za, www.ni.com/southafrica





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