| Model no | EM231 AI 4× RTD | |
| Article No | H7 231-7PC22-0XA0 | |
| Description | 4-channel thermal resistance temperature measurement module;Resolution 16 bits;quarantine | |
| Conventional norm | Dimensions WxHxD（mm） | 71.2×80×62 |
| Power dissipatio | 1.5W | |
| Available current（SM bus） | 50mA | |
| Available current（Sensor power 24V） | 40mA |
| Analog input | Input path | 4 |
| Input type | Analog reference grounded RTD | |
| Input range | thermal resistance：pt100,pt200,pt500,pt1000, Ni100,Ni120,Ni1000,cu10 resistance：150Ω，300Ω，600Ω | |
| Data word format | resistance：0~+27648 | |
| Measure principle | Sigma-delta | |
| Wire circuit resistance (maximum) | 20Ω(2.7 Ω for cu10） | |
| Basic error | 0.1％FS（resistance） | |
| Cold-end error | / |
| Resolution | Temperature | 0.1°C / 0.1°F |
| Supply voltage | / | |
| Resistance | 15bit | |
| Isolation (on-site and isolation sides) | ＞2000V | |
| Module refresh cycle (all channels) | 810 ms | |
| Common-mode rejection | >120db＠120VAC |
| Interference suppression | Conductor length | 100m |
| Address interval | AIW |
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