Data Calibration - Toshiba V Series User Manual

Chapter 1 Module
1.4.7

Data Calibration

1
1.4.7.1
48
The RT318 module has a built-in linear correction function and an offset calibration
function which enables the user to adjust the offset.
Offset adjustment is unnecessary unless there is a difference in the resistance in the
wires connected to terminals A and B connecting the resistance thermometer to RT318.
Linear Calibration Function
The resistance of the RTD changes non-linearly with respect to temperature.
This module performs linear calibration of the input data converted to digital value. This
enables highly accurate measurement at 0.1
Linear calibration is performed between -50
Outside this range, there may be an error between the measured temperature and the
converted data.
4095
4000
3200
2400
1600
800
0
-130
-50
Resistance thermometer temperature (°C)
o
C/count.
o
C and +270
+30 +110 +190
o
C (800 to 4000 count).
Valid data range
Linear correction
valid range
+270
model 3000 Analog module User's Manual