4-20mA to % level - No full range

Hello all,

I have a 4-20mA tank level sensor with linear charachtersics, where 4mA=0mm and 20mA=5000mm. I want to scale it to % level so that 0% = 150mm (4.48mA) and 100% = 2490mm (11.98mA). 

How can I achieve that in LOGO 8.3? any help is appreciated.

Thank you very much, it is indeed 2494, and the program working as I wanted. could you explain me the phylosophy behind B006, how the values of V2, V3 and V4 are being calculated?

I see also the final result x10 which is logical for the text message, but I'm using web server which I don't think it support decimal points. correct me if I'm wrong. 

ixo65

 

T_Ebrahem

Thank you very much, it is indeed 2494, and the program working as I wanted. could you explain me the phylosophy behind B006, how the values of V2, V3 and V4 are being calculated?

Current value of the range (150mm - 2494 mm) multiplied with the gain factor minus offset.

V2 / V3 = Gain
4266 / 10000 = 0,4266

V4 = Offset
-150, it's startpoint of the range for calculation

T_Ebrahem

I see also the final result x10 which is logical for the text message, but I'm using web server which I don't think it support decimal points. correct me if I'm wrong.

The current version of the LWE (V1.1.1) supports decimal places.

 Thanks again, I still could not relate V2 and V3 to the given values.

looking at the following FAQ entry, shouldn't be the gain (5000-0)/(20-4)?