Error concerning current measurement

I am trying to measure a voltage differential from a device (Magnehelic) which produces the 4-20mA output. I am using a DAQcard-6024. In the configuration window, I set the max and min input range with a 6 and 0. I have custom scaling with a slope of .375 and a y-intercept of -1.5. I keep receiving an error message saying that my max and min values don't fall within the appropriate range. It says the appropriate range is between -1.49... and -1.51... Any ideas on what could be causing this problem?

Squinn21:
Regardless of scaling errors, I believe the 6024 can only read voltage inputs, not current. You would need to place a 250 ohm precision resistor across the DAQ input terminals to convert the 4-20mA into a 1-5V siganl the DAQ can read.
-AK2DM
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"It’s the questions that drive us.”
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