©
National Instruments Corp.
15
NI 9219E Operating Instructions and Specifications
2-Wire Resistance and Quarter-Bridge Modes
In 2-Wire Resistance and Quarter-Bridge modes, the NI 9219E
sources a current, which varies based on the resistance of the load,
between the HI and LO terminals. The NI 9219E computes
measured resistance from the resulting voltage reading.
2-Wire Resistance and Quarter-Bridge modes do not compensate
for lead wire resistance.
Figure 10.
Connections in 2-Wire Resistance and Quarter-Bridge Modes
LO
R
Wire
Wire
I
ADC
I
HI
NI 9219E
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com