Data Sheet for Product

8
Siemens CB1Q3903en
Smart Infrastructure 2020-04-08
Connecting NTC sensors to analog inputs
Universal I/Os X1…X8 (T2, T3)
Configurable Via software
Reference potential Terminals ┴
Contact voltage Max. DC 24 V (SELV)
Overvoltage protection Up to 40 V
Analog inputs (X1…X8)
Ni1000
Sensor current 1.4 mA
Resolution 0.1 K
Accuracy within the range -50…150 °C 0.5 K
Pt1000
Sensor current 1.8 mA
Resolution 0.1 K
Accuracy within the range -40…120 °C 0.5 K
NTC 10k
Sensor current 140 μA
Temperature range Accuracy Resolution
-50…-26 °C 1 K 0.2 K
-25…74 °C 0.5 K 0.1 K
75…99 °C 1 K 0.3 K
100…124 °C 3 K 1 K
125…150 °C 6 K 2.5 K
NTC 100k
Sensor current 140 μA
Temperature range Accuracy Resolution
-25…-11 °C 3 K 0.2 K
-10…9 °C 1 K 0.1 K
10…99 °C 0.5 K 0.1 K
100…150 °C 1 K 0.2 K
0...2.5 kΩ
Sensor current 1.8 mA
Resolution 1 Ω
Accuracy 4 Ω