LSIS XBF-AH04A - Page 404

XGB Analog edition manual
11.5 Conversion Speed
The conversion speed of RTD input option board is less than 25ms + 3 x scan time.
The conversion speed includes the time to convert input temperature (resistance value) to digital
value and to save the converted digital data into the internal memory.
∴ Processing time = less than 25ms + 3 x scan time
11.6 Accuracy
The accuracy of RTD module is described below.
• When the ambient temperature is 0 to 55℃: within ±1.0% of available input range
Example) PT100 is used and the ambient temperature is normal.
To measure 100℃, the conversion data output range:
100℃ - [ { 600 - (-200) } x 1.0 % ] ~ 100℃ + [ { 600 - (-200) } x 1.0 % ]
Namely, 92.0 ~ 108.0 [℃]
11.7 Temperature Display
(1) The input temperature is converted to digital value down to the one decimal place.
Ex.) If the detected temperature is 123.4℃, its converted value to be saved to the internal
memory will be 1234.
(2) Temperature can be converted to Celsius or Fahrenheit scale temperature value as desired.
Ex) If Pt100 sensor is used, the temperature of 100.0℃ can be converted to 2120 when
Fahrenheit scale is used.
• Conversion ℃ to ℉,
32
5
9
+= CF
• Conversion ℉ to ℃,
( )
32
9
5
−= FC
(3) temperature input ranges of sensor are as follows;
• PT100 : -200.0 ~ 600.0℃ (-328.0℉~1112.0℉)
• JPT100 : -200.0 ~ 600.0℃ (-328.0℉~1112.0℉)
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