Analog modules 
  6.10 Analog input module SM 331; AI 8 x TC; (6ES7331-7PF11-0AB0) 
S7-300 Automation System Module data 
Manual,  08/2006, A5E00105505-04 
6-91 
Technical data 
Integration/conversion time/resolution (per channel) 
•  programmable 
•  Basic conversion time in ms 
Yes 
3.3 ms ***** 
•  additional conversion time for wire-break monitoring in ms 
93 * 
•  Resolution (including overshoot range) 
•  Noise suppression at interference frequency f1 in Hz 
16 bits (including sign) 
400/60/50 
Measured value smoothing  None / low/ average/ high 
Basic execution time of the module (all channels enabled)  10 ms 
Noise suppression, error limits 
Noise suppression at f = n (f1 1%), (f1 = interference frequency) n = 1.2, etc. 
•  Common-mode interference (U
CM
 
< 60 V AC) 
•  Series mode interference (peak value of disturbance < 
rated input range) 
> 100 dB 
> 90 dB ** 
Crosstalk between inputs  > 100 dB 
Operational limit (across temperature range, relative to 0 °C to 60 °C input range). Note: This limit does not cover the cold 
junction error 
3) 
. 
•  Thermocouple 
 
-200 °C to  +400 °C  ± 0.7 °C Type T 
-230 °C to  -200 °C  ± 1.5 °C 
-150 °C to  +600 °C  ± 0.9 °C Type U 
-200 °C to  -150 °C  ± 1.2 °C 
-200 °C to  +1000 °C  ± 1.2 °C Type E 
-230 °C to  -200 °C  ± 1.5 °C 
-150 °C to  +1200 °C  ± 1.4 °C Type J 
-210 °C to  -150 °C  ± 1.7 °C 
-150 °C to  +900 °C  ± 1.5 °C Type L 
-200 °C to  -150 °C  ± 1.8 °C 
-150 °C to  +1372 °C  ± 2.1 °C Type K 
-220 °C to  -150 °C  ± 2.9 °C 
-150 °C to  +1300 °C  ± 2.2 °C Type N 
-220 °C to  -150 °C  ± 3.0 °C 
+100 °C to  +1769 °C  ± 1.5 °C Type R 
-50 °C to  +100 °C  ± 1.8 °C 
+100 °C to  +1769 °C  ± 1.7 °C Type S 
-50 °C to  +100 °C  ± 2.0 °C 
+800 °C to  +1820 °C  ± 2.3 °C Type B **** 
+200 °C  +800 °C  ± 2.5 °C 
+100 °C to  +2315 °C  ± 2.3 °C Type C 
0 °C  +100 °C  ± 2.5 °C 
Txk/xk(L)  -200 ° C  -150 ° C  ± 1.5 °C