Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | AMM12T S2 |
| Brand | Yokogawa |
| Product Type | Voltage Input Multiplexer Module |
| Function | Thermocouple / RTD input multiplexing |
| Channel Capacity | 16 points |
| Terminal Type | Terminal type |
| Spare Model | AMM12T |
| Origin | Japan |
| Weight | 0.46 kg |
| Dimensions | 5 x 7 x 21.5 cm |
| Input Signal | Voltage input signals from thermocouple and RTD devices |
| System Compatibility | Yokogawa CENTUM CS / CENTUM VP |
Cold Junction Compensation and Channel Isolation
The Yokogawa AMM12T S2 is designed for temperature measurement signal processing using thermocouple and RTD inputs. The module handles multiple temperature input channels through a multiplexing architecture, with channel management functions suitable for Yokogawa DCS I/O configurations.
For thermocouple applications, cold junction compensation (CJC) is applied within the temperature measurement signal chain to maintain measurement conversion accuracy. The module architecture supports separated channel handling to reduce signal interference between connected field inputs.
Frequently Asked Questions
Q: What type of field signals can be connected to the AMM12T S2?
A: The AMM12T S2 accepts temperature-related voltage inputs from thermocouple and RTD field devices through its 16-point input multiplexing interface.
Q: Is the AMM12T S2 designed for direct connection to Yokogawa DCS systems?
A: Yes. The module is specified as a Yokogawa Voltage Input Multiplexer Module for use within CENTUM CS / CENTUM VP system configurations.
Q: Does the available specification define power consumption or operating temperature range?
A: No. The provided technical data does not specify power consumption or operating temperature limits.
Field Installation Guidelines
- Install the AMM12T S2 in the designated Yokogawa I/O mounting location according to the applicable system hardware configuration.
- Verify terminal assignments before connecting thermocouple or RTD field wiring.
- Use appropriate shielded instrumentation cable for low-level temperature signals where required by the installation environment.
- Separate temperature input wiring from high-voltage power cables and high-current switching circuits to reduce electrical noise coupling.
- Confirm grounding and shielding methods according to Yokogawa system installation manuals.
- Inspect terminal connections for secure mechanical fastening before system commissioning.
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