AAT141-S50 S2 Yokogawa CENTUM VP TC/mV Input Module
Manufacturer: Yokogawa
-
Part Number: AAT141-S50
Condition：New with Original Package
Product Type: Analog Input Modules
-
Country of Origin: Japan
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Yokogawa AAT141-S50 S2 TC/mV Input Module
Configured for precise signal acquisition and digital conversion in DCS control loops, the Yokogawa AAT141-S50 S2, also cataloged as the AAT141 TC/mV Input Module, provides direct physical/electrical execution. It handles 16 isolated channels accepting thermocouple and millivolt inputs directly from field sensors.
Suffix Breakdown & Model Matrix
| Suffix Code | Description | Technical Details |
|---|---|---|
| AAT141 | Base Model | Thermocouple and Millivolt Input Module |
| -S | Type | Standard Type |
| 5 | Explosion Protection | With No Explosion Protection |
| 0 | Basic Type | Standard Basic Processing Architecture |
| S2 | Revision | System Revision / Updated Circuitry Design |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | AAT141-S50 S2 |
| Brand | Yokogawa |
| Origin | Japan |
| Dimensions | 5 cm x 13 cm x 15 cm |
| Weight | 0.30 kg |
| Operating Temp | 0 to 55 deg C |
| Power Consumption | 450 mA (5 VDC) |
| Number of Channels | 16 (Isolated) |
| Input Signal Types | Thermocouple (J, K, E, B, R, S, T, N), Millivolt (-100 to +150 mV, -20 to +80 mV) |
| Input Resistance | 2 M ohm or larger (Power ON/OFF) |
| Withstanding Voltage | 1500 VAC between input and system for 1 minute |
| Measurement Accuracy | TC: +/-30 uV; mV: +/-80 uV (-100 to +150 mV span), +/-30 uV (-20 to +80 mV span) |
| Data Update Period | 1 second |
| Reference Junction Compensation | +/-1 deg C |
| Temperature Drift | +/-80 uV/10 deg C (mV), +/-30 uV/10 deg C (TC) |
| External Wiring Connection | Pressure clamp terminal, MIL connector cable, dedicated cable (KS1) |
Cold Junction Compensation & Signal Isolation
The AAT141-S50 S2 integrates channel-to-system galvanic isolation rated for 1500 VAC to prevent ground loop noise from corrupting low-voltage millivolt signals. The hardware includes internal cold junction compensation (CJC) circuitry calibrated to deliver accurate reference offsets within +/-1 deg C. Individual channels support independent software parameterization for thermocouple linearized curves (JIS/IEC standard types J, K, E, B, R, S, T, N) or millivolt ranges (-100 to +150 mV and -20 to +80 mV), alongside a configurable 60-second sensor burnout detection routine.
Frequently Asked Questions
Q: How does the module handle a broken sensor wire on a thermocouple channel?
A: The module executes a configurable burnout detection sequence. Engineers set burnout behavior to either UP (upscale off-scale high) or DOWN (downscale off-scale low) within 60 seconds of open-circuit sensing.
Q: Can channels be configured with mixed sensor types on the same module?
A: Yes, each of the 16 channels allows individual setting of thermocouple types or millivolt ranges without affecting adjacent channel isolation or signal resolution.
Field Installation Guidelines
- Shielding and Grounding: Terminate all sensor cable shielding to the dedicated signal ground bus at the terminal block. Ensure shield continuity extends fully to the field junction box without grounding the shield wire at the field sensor end to eliminate ground loop current paths.
- Terminal Wiring & Clearance: Maintain a minimum clearance of 50 mm between 24 VDC/120 VAC power wiring and low-voltage thermocouple signal lines inside the cabinet ducting. Use pressure clamp terminals or KS1 system cables snapped securely into place to prevent high-vibration connection loss.
- Thermal Equilibrium: Allow the control cabinet to reach stable ambient operating conditions for at least 30 minutes following initial power-up. This ensures the internal reference junction compensation circuit achieves equilibrium with surrounding ambient temperatures.