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| Model no | EM AT04 | |
| Article No | H7 288-3AT04-0AA0 | |
| Description | 4-channel thermocouple temperature module | |
| Conventional norm | Dimensions WxHxD（mm） | 47×100×81 |
| Power dissipatio | 1.5W | |
| Available current（SM bus 5V） | 120mA | |
| Available current（Sensor power 24V） | 40mA |
| Analog input | Input path | 4 |
ScopeRated range (Data word） Overshoot/undershootrange(Data word） Upflow/underflow (Data word） | Please refer to the thermocouple selection table | |
| Measure principle | Sigma-delta |
| Resolution | Temperature | 0.1°C / 0.1°F |
| Supply voltage | 15+symbol bits | |
| Max Operating Pressure | ±60V |
| Isolate | Field side and Logic side | 500V AC |
| Field sideand 24VDC side | 500V AC | |
| 24VDC sideand Logic side | 500V AC | |
| Interchannel isolation | Support | |
| Common-moderejection | 120V AC，>120dB | |
| Repeatability | ±0.05％FS | |
| Cold-end error | ±1.5°C | |
| Cable loopresistance(Maximum） | 100Ω | |
| Diagnose | Upflow/underflow；Operating signal range；24VDC low voltage | |
| Cable length | 100m，Shielded twisted pair |
| Suppressionfrequency selection | 400Hz(2.5ms) | |
| 60Hz(16.6ms) | ||
| 50Hz(20ms) | ||
| 10Hz(1000ms) |
Note: When 400Hz suppression is selected, in order to ensure the module resolution and accuracy, the integration time should be10ms. At the same time, this selection also suppresses noise at frequencies of 100Hz and 200Hz. An integration time of 100ms isrecommended when measuring thermocouples. Using a smaller integration time will be increasing the repeatability error of thetemperature reading.
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