AI801 Channel Configuration
When configuring analog channels for AI801 Module I found setting for Signal range called 4-20ma and 4-20ma LL. What the differance between them??
Also what is the meaning of setting Linearization??
Please check attached pictures
Voted best answer
4-20ma is the standard signal of Analog (Current)
4-20ma LL means Line to Line (which is usally used for differential Inputs)
Setting Linearizations is used when you have a non linear input so you may use a graph to cut down the range (like extrapolation) for example if you have a Tank Volume calculation where the Tank is not Uniform so you say:
From 0-10% the range equivalent Y1 =ax + b
From 10-80% the range equivalent Y2= Y1 + cx
... and so on.