Siemens S7-300 Series - Page 85

Analog input module SM 331; AI 6 x TC Isolated (6ES7331‑7PE10‑0AB0)
A5E02398493-02, 11/2008
9
Technical Data
+100 °C to +1769 °C ± 0.8 °C
Type S
-50 °C to +100 °C ± 1.5 °C
+700 °C to +1820 °C ± 1.0 °C
+500 °C to +700 °C ± 1.3 °C
Type B
(5)
+200 °C to +500 °C ± 3.0 °C
+100 °C to +2315 °C ± 0.5 °C Type C
0 °C to +100 °C ± 1.0 °C
-150 °C to +800 °C ± 0.5 °C Type TxK / XK(L)
-200 °C to -150 °C ± 1.0 °C
The accuracy of the temperature measurement with internal
compensation (terminal temperature) is derived from:
(4) (6)
● Error for the analog input of the type of
thermocouple used
● Accuracy of the internal reference junction
temperature ± 1.5 K
The accuracy of the temperature measurement with external
compensation with thermal resistors connected locally or remote
via external RTD module is derived from:
(4)
● Error for the analog input of the type of
thermocouple used
● Accuracy of the type of thermal resistor used for
compensation
● Error for compensation input (local connection)
± 0.5 K
● Error for the RTD module (remote connection)
The accuracy of the temperature measurement with
compensation of the external reference junction maintained at 0
°C / 50 °C is derived from:
(4)
● Error for the analog input of the type of
thermocouple used
● Accuracy of the reference junction temperature
Temperature error (relative to input range)
Voltage input ranges
• ± 25 mV
• ± 50 mV
• ± 80 mV
• ± 250 mV
• ± 500 mV
• ± 1V
± 0.0023% / K
± 0.0015% / K
± 0.0010% / K
± 0.0010% / K
± 0.0010% / K
± 0.0010% / K
Thermocouple (at 100 ms intergration time)
Type T
Type U
Type E
Type J
Type L
Type K
Type N
Type R
Type S
Type B
Type C
Type TxK / XK(L)
± 0.0060% / K
± 0.0175% / K
± 0.0086% / K
± 0.0086% / K
± 0.0175% / K
± 0.0143% / K
± 0.0175% / K
± 0.0115% / K
± 0.0115% / K
± 0.0200% / K
± 0.0515% / K
± 0.0143% / K
Linearity error (relative to input range) ± 0.05%
Repetition accuracy (in transient state at 25 °C, relative to input
range)
± 0.05%