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negativ current measurements

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I see that with BL4S200 is possible to make current measurements (4 to 20 ma).
Actually I need to make -5 to +5 ma measurements. Is that possible with BL4S200?
Do I have to make a calibration?

Thanks to all.
asked Nov 30, 2014 in Other/Legacy by seabubbles New to the Community (0 points)

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1 Answer

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That is not possible. Calibrating will not make a difference. You need to supply a voltage of 0-2.5V and read 4-20ma.

See the sample program samples\BLxS2xx\ADC\adc_rd_ma.c.
answered Dec 2, 2014 by trooper2 Veteran of the Digi Community (591 points)