Yokogawa ATI3S-001 ProSafe-RS Temperature Transmitter Module
The Yokogawa ATI3S-001, also cataloged as the ATI3S Temperature Transmitter Module, operates as a dedicated hardware component for 16-channel isolated temperature signal acquisition within Yokogawa ProSafe-RS platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | ATI3S-001 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.4 kg |
| Dimensions | Standard ProSafe-RS rack module footprint |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 3 W |
| Number of Channels | 16 |
| Channel Isolation | Galvanic isolation per channel |
| Input Type | RTD and Thermocouple sensors |
| Output Type | 4-20 mA DC analog current |
Cold Junction Compensation & Channel-to-Channel Isolation
The module incorporates dedicated internal cold junction compensation (CJC) circuits alongside galvanic channel-to-channel isolation across all 16 input paths. When processing low-millivolt thermocouple signals, onboard CJC sensors continuously monitor terminal block temperature gradients to eliminate cold junction reference drift. Galvanic isolation prevents ground loop currents and field transients from corrupting temperature measurement accuracy or propagating backplane disturbances into adjacent safety system processing channels.
Frequently Asked Questions
Q: How does the module handle a sensor burnout or open-circuit condition on a thermocouple channel?
A: Upon detecting an open-circuit fault or sensor failure, internal diagnostic circuits immediately drive the corresponding channel output to a predefined upscale or downscale safe state, notifying the ProSafe-RS controller of the fault condition.
Q: Can the module be inserted or removed under power during routine maintenance?
A: Yes. The ATI3S-001 supports hot-swapping within ProSafe-RS I/O racks, permitting module replacement without interrupting operating power or signal conversion on adjacent active system cards.
Field Installation Guidelines
Ensure main enclosure power is isolated before mounting the module into the designated slot. Align the rear edge connectors with the backplane guide rails and press firmly until the mechanical locking tabs engage fully.
For sensor signal wiring and cabinet commissioning:
- Strip thermocouple or RTD field extension leads to 7 mm and land conductor ends securely into the terminal block.
- Connect thermocouple extension wires using matching alloy leads to maintain cold junction measurement integrity.
- Route sensor cabling in dedicated low-voltage instrument ducts separate from AC power circuits to minimize electromagnetic interference.
- Ground cable shields at a single point on the enclosure system earth busbar to prevent ground loops.
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| Condition | 100% New with Original Package |
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| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
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