First off, you must ensure that the daq channel you wish to use is a high impedance input. This is not normally a problem, as any daq board I have used is in the hi-K's to Meg ohms input. The Omron will normally supply a constant current drive to the RTD, and then measure the voltage across it, internally in the meter. You could hook your daq input across the RTD resistance terminals ( not the lead compensation terminal), and measure the voltage. You would then have to do a conversion to engineering units (temperature) in Labview. You will need a table of resistance vs. temperature, and ohm's law to do this.
