Mitsubishi Electric MELSEC iQ-F FX5 User Manual page 336

Accuracy at thermocouple connection
The accuracy () is given by the following formula:
Full scale  Thermocouple accuracy + Cold junction compensation accuracy
Ex.
Accuracy when B thermocouple is used, the operating ambient temperature is 25, and measured temperature is 1000
(1700 - 600)  (0.0013) + (1) = 2.5
■Usable thermocouples and conversion accuracy
Usable thermocouples and conversion accuracy are shown as follows.
Usable thermocouple
K
J
T
B
R
S
To stabilize the accuracy, warm-up (supply power) the system for 30 minutes or more after power-on.
Accuracy at resistance temperature detector connection
The accuracy () is given by the following formula:
Conversion accuracy + Temperature characteristic  Operating ambient temperature change + Allowable tolerance of used
resistance temperature detector
■Usable resistance temperature detector, accuracy
Usable resistance
temperature detector
Pt100
Ni100
3 FX5-8AD
334
3.2 Specifications
Conversion accuracy
(at operating ambient temperature 255)
1.5
1.2
1.5
2.3
2.5
2.5
Temperature measuring Accuracy (accuracy for the maximum value of the selected range)
range
at operating ambient temperature
255
0.8
-200 to +850
0.4
-60 to +250
Conversion accuracy
(at operating ambient temperature -20 to +55)
7.3
4.95
6.5
9.8
12.5
12.5
at operating ambient temperature -20
to +55
2.4
1.2