Per-channel range choice
Each channel can be assigned a supported thermocouple or millivolt range, allowing mixed sensor types without changing the module hardware.
YOKOGAWA · CENTUM ENGINEERING RECORD
Yokogawa AST143-S00 S1 | 16-Channel TC/mV Input Module with Built-In Barrier
CENTUMI/OMODULE
01
Product Profile
Yokogawa AST143-S00 S1 is a sixteen-channel isolated thermocouple and millivolt input module with built-in barriers for CENTUM field I/O. It accepts IEC thermocouple types B, E, J, K, N, R, S and T or either of two millivolt ranges, then converts each selected channel into controller temperature or process data.
At the ATST4 pressure-clamp terminal, Yokogawa AST143-S00 S1 measures the sensor voltage and applies reference-junction compensation for supported thermocouples. Each channel can be assigned TC or mV service, while burn-out behavior is enabled or disabled for the complete module rather than independently per point.
A non-grounded thermocouple is required on Yokogawa AST143-S00 S1 because grounding several isolated channels at the sensors can create multi-point grounds and temperature error. Shielding, terminal ambient temperature and total source-plus-wiring resistance are therefore part of measurement quality.
02
Performance Specifications
| TECHNICAL ITEM |
|
|---|---|
| Brand | Yokogawa |
| Model | AST143-S00 S1 |
| Nameplate Suffix | S1 |
| Product Name | TC/mV input module with built-in barrier |
| Country | Japan |
| Input Channels | 16 isolated |
| Thermocouples | B, E, J, K, N, R, S and T |
| mV Ranges | -100 to 150 mV; -50 to 75 mV |
| Channel Selection | TC or mV individually for CH1 to CH16 |
| Allowable Input | ±5 V |
| Input Resistance | 1 MΩ or greater |
| Accuracy | TC ±40 µV; mV ±80 µV at 23 °C |
| RJC Accuracy | ±1 °C under stated terminal conditions |
| Source plus Wiring Resistance | 1000 Ω maximum |
| Update Period | 1 second or less |
| Burn-out | Module-wide enable/disable; UP or DOWN |
| External Terminal | ATST4 pressure clamp terminal |
| Barrier Type | Isolated interface |
| Current Consumption | 150 mA at 5 V plus 80 mA at 24 V |
| Dimensions | 32.8 × 130 × 107.5 mm |
| Weight | Approx. 0.30 kg |
03
Performance Characteristics
AST143-S00 S1 measurement quality depends on sensor type, microvolt conversion, reference-junction conditions and the complete wiring path.
Reference-junction effect
Thermocouple accuracy includes the ATST4 terminal reference junction; terminal ambient conditions influence the compensation error.
Burn-out response
Burn-out can drive failed inputs UP or DOWN, but the enable and direction setting applies across the module and must match the control strategy.
04
Installation Highlights
Install AST143-S00 S1 by preserving sensor polarity, isolation and the terminal environment that supports reference-junction compensation.
Prepare the sensor list
Record every channel type, range and polarity; use non-grounded thermocouples and verify the total source-plus-wiring resistance before termination.
Terminate and shield
De-energize the node, fit the documented ATST4 terminal, land paired conductors in channel order and terminate the shield according to the approved EMC plan.
Validate before service
Restore power, compare selected channels with a known millivolt or temperature source, check reference-junction behavior and prove the configured burn-out direction.
05
Technical Questions
01Why does Yokogawa AST143-S00 S1 require non-grounded thermocouples?
Yokogawa AST143-S00 S1 isolates its channels, but several grounded thermocouples can create multi-point grounds and temperature error; use non-grounded sensors as specified.
02Can Yokogawa AST143-S00 S1 mix thermocouple and millivolt channels?
Yes. Yokogawa AST143-S00 S1 allows TC or mV selection for each channel from CH1 to CH16, provided each range and wiring pair is configured correctly.
03What affects reference-junction accuracy on Yokogawa AST143-S00 S1?
For Yokogawa AST143-S00 S1, the ATST4 terminal ambient condition, installation arrangement and selected thermocouple type affect reference-junction compensation.
04Why does a Yokogawa AST143-S00 S1 channel show an upscale or downscale value?
Yokogawa AST143-S00 S1 can apply module-wide UP or DOWN burn-out behavior; check the open sensor circuit and the configured burn-out direction.
05How should Yokogawa AST143-S00 S1 be checked after replacement?
For Yokogawa AST143-S00 S1, verify channel type, polarity, shield, terminal identity and a known input on representative TC and mV channels before accepting process values.
06Can Type B thermocouples measure the full low-temperature range on Yokogawa AST143-S00 S1?
No. Yokogawa AST143-S00 S1 does not temperature-compensate Type B below the documented region, and temperatures under 44 °C are not measurable for that type.
06
Shipping Services
Moore Automation
https://www.mvme.cn/Moore Automation can retain confirmed packing references, carrier details and tracking information with the relevant product record. Shipment information is shared when it is available from the selected carrier.
Packing recordItem and quantity referenced
Carrier handoffShipment details retained
Tracking updateNumber shared when available
07
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