Cable resistance ko zero karne ke liye 3 wire RTD use karte hai long distance hone se cable ka resistance bhi add ho jata hai agar Long distance mai 2 wire use karte hai to temperature sahi nahi dikhayega kyuki wire resistance add ho jata hai
According to resistance( 85)= - 38 degree centigrade show and MA show = 5.4 MA Temp. Transmitter RANGE CALCULATION -50(temp) = 4 MA -12.5(temp) = 8 MA 25(temp)) = 12 MA 62.5 (temp) =16 MA 100 (temp) = 20 MA
