| Model no | EM231 AI4×TC AIW | |
| Article No | H7 231-7PD22-0XA0 | |
| Description | 4-channel thermocouple 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 | Floating thermocouple |
| Input range | Type | EJKNRST |
| Voltage range | ±80mV | |
| Data word format | Supply voltage：-27648 - +27648 | |
| Measure principle | Sigma-delta | |
| Wire circuit resistance (maximum) | 100Ω | |
| Basic error | 0.1％FS | |
| Cold-end error | ±1.5 °C |
| Resolution | Temperature | 0.1°C / 0.1°F |
| Supply voltage | 15+symbol bits | |
| Resistance | / | |
| Isolation (on-site and isolation sides) | ＞2000V | |
| Module refresh cycle (all channels) | 405 ms | |
| Common-mode rejection | >120db＠120VAC |
| Interference suppression | Conductor length | 100m |
| Address interval | AIW |
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