Chapter 7 Usage of Various Functions

6) Temperature conversion characteristics

The RTD input module, as shown below, linearlizes the non-linear characteristic resistance input of the RTD

7) Digital conversion value

The RTD input module, as shown below, outputs digital converted value of detected temperature value.(Range 0 ~ 4000)

Digital conversion value

4000

 

 

-2000

0

Detected temp. value

 

6000

 

 

Digital Conversion value = (Detected Temp. value+2000)/2

Example) Assume that Detected temperature value(D4980) is 2345, then real temperature = 234.5, and Digital conversion value(D4770) is (2345+2000)/2 = 2172.

7-65

Page 149
Image 149
LG Electronics 120S user manual Temperature conversion characteristics, Digital conversion value, 4000 2000, 6000