The sensor outputs a 4 to 20 milliamp mA for a temperature r

The sensor outputs a 4 to 20 milliamp (mA) for a temperature range from 0 - 100 degrees Celsius. What is the equation that describes the relationship between input and output values?

Solution

>> Now, Input (I) is Temperature readings, whose range is from 0 - 100 C

and, Output (O) is Current Readings, whose range is from 4 to 20 mA

>> Assuming Linear Relation between input and output values,

So, O = m*I + c

m = Slope of linear line

and, c = Intercept

>> (1). At I = 0 C, O = 4 mA

=> 4 = m*0 + c

=> c = 4

(2), At I = 100 C, O = 20 mA

=> 20 = m*100 + c

=> m = 0.16

=> Required Relation between input nd output values => O = 0.16*I + 4

O = Output

and, I = Input