why 4mA from tranmsitter not showing 0 as the value in DCS?
Using AI815, when a weight indicator gives 4mA as the signal, the card shows a reading of 8.33 kg or something like that.. when given through a 4-20mA source, it doesnt give that deviation.
The range of the IO is 0-7000Kg and it is 4 wire channel.
Is there a way to fix the offset during the 4mA level.?
Voted best answer
8.33 kg is negligible deviation w.r.t your scale. i.e. 0.1% of deviation. AI will be shown as 0 when the input current is less then 4 mA, but within limited deviation, For example 3.95 mA. But when the current input goes above 4mA there can be a small variations. If still you want to have zero, I guess you need to calibrate your weight indicator.